Peters, C. J.
The dispositive issue in this administrative appeal is whether the trial court properly refused to supplement the record with evidence of alleged procedural irregularities to establish a violation of the Uniform Administrative Procedure Act (UAPA), and, specifically, General Statutes (Rev. to 1985) § 4-179.1 [653]*653The defendant Connecticut department of health services (department) brought charges against the plaintiff, Donald Pet, a psychiatrist, alleging certain violations of General Statutes (Rev. to 1985) § 20-13c2 in relation to his psychiatric treatment of four female patients. The defendant Connecticut medical examining board (board),3 after an evidentiary hearing by a panel of board members, concluded that the plaintiff [654]*654had violated § 20-13c (4) and (5), and ordered that the plaintiffs license to practice be suspended for five years, after which his practice would be limited to supervised group therapy only within an institutional setting.
The plaintiff appealed to the Superior Court,4 which sustained the plaintiffs appeal and remanded the case to the board for a new hearing, on the ground that the plaintiffs due process rights had been violated because the board had improperly curtailed the plaintiff’s right to cross-examine an adverse expert witness.5 The trial court, in response to the defendants’ motion to articulate, stated that the prior administrative proceeding was effectively nullified by its order for a new hearing. The defendants appealed from the judgment of the trial court to the Appellate Court, and we transferred the appeal to this court pursuant to Practice Book § 4023 and General Statutes § 51-199 (c).
We disagree with the trial court’s determination that, under the facts of this case, the limitation of the plaintiffs cross-examination of an adverse witness violated due process, and we reverse on that issue. We conclude, however, that the record is insufficient to determine whether the board complied with the mandates of the UAPA, and that the trial court improperly reached a conclusion that the board had so complied. Because of the trial court’s improper failure to permit the plaintiff to supplement the record with tapes of relevant board meetings and additional testimony regarding alleged procedural errors, we remand the case to the trial court for further proceedings.
[655]*655The relevant procedural history of this action may be summarized as follows. The department charged the plaintiff with having failed to provide several patients with proper psychiatric care and treatment in violation of § 20-13c (2) and (4).6 A hearing before a designated panel of the Connecticut medical examining board (panel) regarding these charges commenced on June 24, 1986, and continued on twenty different days, ending on August 29,1989.7 The panel consisted of four members of the board, but attendance throughout the days of the hearing ranged from one to four members.8 The [656]*656person chairing the hearing varied, with a different panel member acting as chairperson on days when the appointed chairperson was absent.
During the course of the hearing on December 29, 1988, the department issued a third amended statement of charges against the plaintiff. That statement of charges alleged in eighteen counts that, in violation of § 20-13c (2), (4) and (5),* *9 the plaintiff had engaged in sexual conduct with four patients, had provided psychiatric care to employees, had mishandled the “transference phenomenon” with four patients, had improperly conducted a “sexological examination” of one patient, had improperly monitored the prescription of medication to one patient and had failed to respond properly to issues raised by one patient. The board eliminated several of these charges during the course of the hearing, including those relating to the plaintiff’s psychiatric relationship with employees.
After the conclusion of the hearing, the department submitted to the panel a recommended “Proposal for Decision.” Thereafter, on February 26, 1991, pursuant to General Statutes (Rev. to 1985) § 4-179, the panel issued a formal “Proposal for Decision.” In March, 1991, the plaintiff filed a brief responding to both the department’s and the panel’s proposal for decision.
The parties presented oral arguments to the board at its March 19, 1991 meeting. The minutes of that board meeting state that, “[mjembers of the Board asked Dr. Williams for her opinion on the case, as she is the only remaining original Panel member who heard the case. Dr. Williams stated that, while she is the only Board member left, Dr. Mandell and Mr. Harris were actively involved in the drafting of the Proposal for [657]*657Decision and the Proposal reflects the unanimous feeling of the Panel. Dr. Williams continued that there was a lot of material presented, and she has read the entire record.” The board then voted to table a decision until the next month and requested that the department file a response to the plaintiffs brief by April 2, 1991.
On April 16,1991, the board voted to strike one additional paragraph from the statement of charges. It also amended the proposal for decision by increasing the period of suspension of the plaintiffs license from three years to five years, and by adding a restriction that the plaintiffs practice thereafter be confined to group therapy within an institutional setting while under the supervision of a senior clinician approved by the board. The board’s final decision, on April 23,1991, reflected these changes, and concluded that the plaintiff had violated § 20-13c (4) and (5) with respect to the charges of inappropriate sexual conduct, mishandling of transference, misprescribing of medication and failing to monitor a patient. After the board denied the plaintiff’s subsequent request for reconsideration, he instituted an appeal to the Superior Court, which, as has been previously noted, was sustained.
On appeal to this court, the defendants claim that the trial court improperly: (1) concluded that the board had violated the plaintiff’s due process rights by limiting his cross-examination of the department’s expert witness; and (2) nullified the prior administrative proceeding and ordered a new hearing. The plaintiff has cross appealed, claiming that the trial court improperly rejected his remaining constitutional and statutory claims and, accordingly, improperly failed to order dismissal of the charges against him. While we agree with the defendants’ first claim, we also agree with the plaintiff that the trial court improperly denied him his statutory right to supplement the administrative record to prove that procedural irregularities undermined the [658]*658fairness of the proceedings against him. A further hearing in the trial court will therefore be required. Additional facts are set forth below as necessary.
I
The defendants first claim that the trial court incorrectly held that the board had violated the plaintiffs due process rights by limiting his cross-examination of the department’s sole expert witness. We agree with the defendants that the limitations placed on the plaintiff’s cross-examination of that witness did not violate due process.
With respect to this issue, the trial court found the following facts. “At the administrative hearing held on April 18,1989, the Department presented as its expert witness, Dr. Kenneth Selig, a psychiatrist and a graduate of Yale Law School. During its direct examination, the Department elicited from Dr. Selig his professional opinion on most of the charges it had brought against the plaintiff.
“Generally speaking, Dr. Selig’s testimony on direct examination supported the positions taken by the Department. Thus, Dr. Selig testified about the Department’s charges that the plaintiff violated General Statutes § 20-13c in connection with his employment of patients, his management of the ‘transference phenomenon,’ his alleged sexual contact with patients, his conduct of a ‘sexological examination’ of a patient, and his prescription and monitoring of medication for his patients. . . . The direct examination consumed most of the morning of April 18, 1989.
“Before noon on April 18, the plaintiff began his cross-examination of Dr. Selig. The hearing was adjourned that day at 12:20 p.m. The cross-examination continued at the next session, one week later on April 25.
[659]*659“Analysis of the record of the cross-examination reveals that it covered all of the topics which were the subject of the direct examination. Additionally, the plaintiff pursued many questions aimed at weakening the witness’s credibility, especially in the area of the witness’s own training, experience, and current professional practice. Some of the cross-examination was effective in weakening the Department’s position on the charges against the plaintiff. This was particularly true concerning the charge that the plaintiff improperly hired some of his patients to work in this clinic. The Board ultimately exonerated the plaintiff on this charge.”
Our examination of the record reveals that the panel chairperson repeatedly admonished the plaintiff to discontinue a line of questioning on the differences between schools of psychiatric theory, and in particular how each manages the “transference phenomenon,” because the questioning had become repetitive and nonproductive. At the same time, the chairperson noted on the record that the board fully understood that different schools of psychiatric theory existed and that Selig did not profess to hold the only view available. Nevertheless, the plaintiff persisted with this line of questioning. After the chairperson’s efforts to limit the cross-examination on this subject had failed, the chairperson finally advised the plaintiff that his cross-examination would end after one additional hour.
The plaintiff thereafter resumed his cross-examination of Selig until the chairperson stopped him because the allotted time had expired. Opposing counsel was then permitted to conduct a redirect examination. The chairperson completed the examination of Selig with his own questions.
The trial court concluded from this record that: “[T]he Board, acting through the chair[person] of the [660]*660hearing panel, violated the plaintiffs legal right to cross-examine fully and adequately an important opposing witness. The Board’s action was arbitrary and constituted an abuse of its discretion. In so acting, the Board prejudiced a substantial fundamental right of the plaintiff.”
“[Wjhere a party appeals pursuant to the jurisdictional grant of the UAPA, the agency action is measured by the standards contained within the UAPA.” McDermott v. Commissioner of Children & Youth Services, 168 Conn. 435, 441, 363 A.2d 103 (1975). We, therefore, review the merits of the defendants’ claims in the context of the limited scope of judicial review afforded by the UAPA to determinations made by an administrative agency.10 Griffin Hospitals. Commission on Hospitals & Health Care, 200 Conn. 489, 496, 512 A.2d 199, appeal dismissed, 479 U.S. 1023, 107 S. Ct. 781, 93 L. Ed. 2d 819 (1986). “With regard to questions of fact, it is neither the function of the trial court nor of this court to retry the case or to substitute its judgment for that of the administrative agency. . . . Judicial review of the conclusions of law reached administratively is also limited. The court’s ultimate duty is only to decide whether, in light of the evidence, the [agency] has acted unreasonably, arbitrarily, illegally, or in abuse of its discretion. . . . The present [661]*661appeal is from the decision of the trial court. We review that decision only to determine whether it was rendered in accordance with the [UAPA].” (Citations omitted; internal quotation marks omitted.) Id.
We have held repeatedly that “the ‘procedures required by the UAPA exceed the minimal procedural safeguards mandated by the due process clause.’ Adamchek v. Board of Education, 174 Conn. 366, 369, 387 A.2d 556 (1978); Taylor v. Robinson, 171 Conn. 691, 698, 372 A.2d 102 (1976).” Pet v. Department of Health Services, 207 Conn. 346, 356-57, 542 A.2d 672 (1988). While the UAPA provides that in contested cases “a party may conduct cross-examinations required for a full and true disclosure of the facts”; General Statutes (Rev. to 1985) § 4-178 (3), now codified at § 4-178 (5); it also provides that “the agency shall, as a matter of policy, provide for the exclusion of irrelevant, immaterial or unduly repetitious evidence.” General Statutes (Rev. to 1985) § 4-178 (1). The facts of this case regarding this issue come dangerously close to establishing a violation of the mandates of the UAPA. In particular, we believe that a time specific limitation, as opposed to a content specific one, was inappropriate.11 We nevertheless conclude that, in this case, the [662]*662limitation of the plaintiffs cross-examination of the department’s expert was not unlawful.
The plaintiff was afforded an opportunity to raise each and every matter brought out on direct examination in his cross-examination of Selig. The plaintiff succeeded in his cross-examination in obtaining repeated admissions by Selig that he was not qualified to comment conclusively on the behavioral school of psychiatry, and by all appearances was seeking to have Selig once again repeat such admissions at the time the chairperson terminated his cross-examination. The plaintiff was asked repeatedly to terminate his questioning of Selig concerning the separate schools of psychiatry, and was assured that the panel understood that Selig recognized that there are different schools. The chairperson had issued numerous warnings to the plaintiff before ultimately placing a time limit on the plaintiff’s cross-examination, in response to what appeared to the chairperson to be behavior “contemptuous of the panel” and in total disregard of his previous admonishments. The chairperson’s recourse to a time limitation, after his attempts to limit the repetitive content of the questions had failed, was not necessarily punitive or arbitrary. In fact, the plaintiff did move on to other topics after the time limitation was imposed.
Furthermore, we cannot say that the chairperson acted unlawfully in imposing this limitation merely because counsel for the department joined the plaintiff in opposing the limitation. It was within the province of the board to limit the admission of “unduly repetitious evidence.” General Statutes (Rev. to 1985) § 4-178 (1). The plaintiff’s cross-examination took approximately five hours over the course of two hear[663]*663ing days. The direct examination, on the other hand, had taken approximately one hour. Although time, per se, does not reflect the adequacy of the cross-examination, it is one factor to consider in determining whether the plaintiff’s right to cross-examination was violated.
Cross-examination regarding “motive, interest, bias or prejudice ... is a matter of right and may not be unduly restricted” (internal quotation marks omitted); State v. Lewis, 220 Conn. 602, 621, 600 A.2d 1330 (1991); but that right is nevertheless “ ‘subject to reasonable limitation.’ ” Id.; State v. Vitale, 197 Conn. 396, 401, 497 A.2d 956 (1985); see siso Delaware v. Van Arsdale, 475 U.S. 673, 679, 106 S. Ct. 1431, 89 L. Ed. 2d 674 (1986). “When the absolute right of cross-examination has been fully and fairly exercised, its extent becomes subject to the sound discretion of the [presiding official who] may exercise a reasonable judgment in determining when the line of inquiry has been exhausted. . . . The [presiding official] has broad discretion in deciding the relevancy of evidence as it pertains to cross-examination . . . and on appeal the appellant has the burden of establishing that there has been an erroneous ruling which was probably harmful to him. ... We have stated that the test of cross-examination is whether there has been an opportunity for full and complete cross-examination rather than the use made of that opportunity.” (Citations omitted.) State v. Jones, 167 Conn. 228, 232-33, 355 A.2d 95 (1974). The record in this case does not support a conclusion that the plaintiff was deprived of an opportunity for full and complete cross-examination.
Even if we were to conclude that the panel had impaired the plaintiff’s right to cross-examine Selig, the plaintiff cannot meet his burden of showing sub[664]*664stantial prejudice. Jutkowitz v. Department of Health Services, 220 Conn. 86, 94, 596 A.2d 374 (1991); Concerned Citizens of Sterling, Inc. v. Connecticut Siting Council, 215 Conn. 474, 489, 576 A.2d 510 (1990); Levinson v. Board of Chiropractic Examiners, 211 Conn. 508, 536, 560 A.2d 403 (1989). In administrative appeals, we have held that the failure to utilize a remedy available to cure a defect deprives a complainant of the right to object to the alleged defect. Dragan v. Connecticut Medical Examining Board, 223 Conn. 618, 631, 613 A.2d 739 (1992); Jutkowitz v. Department of Health Services, supra, 95-96. In this case, because the plaintiff did not avail himself of the opportunity to subpoena Selig for further testimony or to move the board to strike Selig’s testimony on direct, we are similarly persuaded that he was not substantially prejudiced.
Accordingly, we reverse the trial court’s holding that the board’s limitation of the plaintiff’s cross-examination of Selig was arbitrary, an abuse of discretion, and violative of a substantial fundamental right of the plaintiff. This disposition of the defendants’ appeal in their favor on the merits makes it unnecessary for us to resolve the defendants’ further disagreement with the trial court’s remand order.
II
The plaintiff’s cross appeal challenges the validity of the administrative proceedings against him on a number of grounds that can best be analyzed as raising issues of evidentiary sufficiency, constitutional fairness and compliance with the applicable provisions of the UAPA. We agree with the trial court’s conclusion that the plaintiff has failed to demonstrate a lack of substantial evidence to support the sanctions imposed upon him and that he has similarly failed to establish that [665]*665the proceedings deprived him of his constitutional right to due process. We conclude, however, that the record is insufficient to resolve the plaintiff’s further claims that the administrative proceedings failed to comply with the procedural mandates of the UAPA and that the trial court therefore should have granted his request to supplement the record in this regard.
A
The plaintiff has raised two claims concerning the sufficiency of the evidence before the board to sustain its finding that he had violated § 20-13c. He challenges the trial court’s conclusions that: (1) the board properly relied on its own expertise in assessing the charges against him; and (2) the board had before it substantial evidence to support its findings. We agree with the trial court.
The plaintiff argues that the trial court improperly failed to honor his due process rights and diminished the quantum of evidence required to sustain the suspension of his license because the board members were permitted to act as their own experts in technical matters without specifying their credentials or the authority on which their conclusions were based.12 The [666]*666plaintiff asserts that the board thereby reached unsubstantiated conclusions regarding the appropriate standard of care, contrary to the expert authority he had presented to the panel. We disagree.
General Statutes (Rev. to 1985) § 4-178 authorizes an agency to evaluate evidence in light of its “experience, technical competence, and specialized knowledge . . . .”13 In a similar case before a medical examining board consisting entirely of physicians, we stated that “the [persons] composing the board were themselves qualified to decide whether certain conduct of a physician or surgeon so derogated from professional standards as unreasonably to jeopardize the interests of the public; and upon that basis they were so entitled to act. . . . With the facts of [the professional’s] conduct before it, the board was competent to determine [whether the conduct had been compatible with professional standards] without hearing expert opinion evidence.” Jaffe v. Department of Health, 135 Conn. 339, 349, 64 A.2d 330 (1949); see also New England Rehabilitation Hospital of Hartford, Inc. v. Commission on Hospitals & Health Care, 226 Conn. 105, 149, 627 A.2d 1257 (1993). Nevertheless, a person charged with professional misconduct “has the right to offer expert opinions at the hearing before the board; [the board] is bound to admit such evidence; and [the board] would be obliged to consider it in arriving at its conclusions.” Jaffe v. Department of Health, supra, 350.
We cannot say that the board in this case failed to provide adequate notice of reliance on its own exper[667]*667tise. Here, the proposal for decision set forth the findings of fact upon which the recommended decision was based, the conclusions the board intended to draw from these findings of fact, and the specific statutory provisions deemed to have been violated thereby. The plaintiff was thereby afforded ample opportunity to rebut the proposed findings. See New England Rehabilitation Hospital of Hartford, Inc. v. Commission on Hospitals & Health Care, supra, 150.
The trial court correctly noted that the standard of professional care applied by the board in this case was based on the board’s interpretation of General Statutes § 20-13c (4) and (5). “Judicial review of the conclusions of law reached administratively is . . . limited. . . . [It] is the well established practice of [a reviewing] court to accord great deference to the construction given [a] statute by the agency charged with its enforcement. . . .” (Citations omitted; internal quotation marks omitted.) Griffin Hospital v. Commission on Hospitals & Health Care, supra, 496. The trial court correctly held that the board had not abused its discretion with regard to the standard of professional care employed in its determination of this case. It was not improper for the board to utilize its own expertise in reaching its conclusions regarding the plaintiff’s professional conduct.
The plaintiff also claims that the trial court improperly concluded that there was substantial evidence in the record to support the board’s findings and conclusions. The trial court correctly limited the scope of its inquiry to that authorized by General Statutes (Rev. to 1985) § 4-183 (g) of the UAPA. “Judicial review of an administrative agency decision requires a court to determine whether there is substantial evidence in the administrative record to support the agency’s findings [668]*668of basic fact and whether the conclusions drawn from those facts are reasonable .... The substantial evidence standard is satisfied if the record provides a substantial basis of fact from which the fact in issue can be reasonably inferred.” (Citations omitted; internal quotation marks omitted.) Adriani v. Commission on Human Rights & Opportunities, 220 Conn. 307, 314-15, 596 A.2d 426 (1991). “In determining whether an administrative finding is supported by ‘substantial evidence,’ the reviewing court must defer to the agency’s assessment of the credibility of witnesses.” Miko v. Commission on Human Rights & Opportunities, 220 Conn. 192, 200, 596 A.2d 396 (1991); Briggs v. State Employees Retirement Commission, 210 Conn. 214, 217, 554 A.2d 292 (1989). “The reviewing court must take into account contradictory evidence in the record . . . but the possibility of drawing two inconsistent conclusions from the evidence does not prevent an administrative agency’s finding from being supported by substantial evidence . . . .” (Citations omitted; internal quotation marks omitted.) Samperi v. Inland Wetlands Agency, 226 Conn. 579, 588, 628 A.2d 1286 (1993).
With regard to the charges of sexual conduct, four witnesses, all of whom were former patients of the plaintiff, testified before the panel that sexual contact had taken place between themselves and the plaintiff, and testified to the details thereof. The board specifically found these witnesses to be credible, and rejected the plaintiff’s testimony on these claims as incredible. A reviewing court “must defer to the agency’s assessment of the credibility of the witnesses and to the agency’s right to believe or disbelieve the evidence presented ... in whole or in part.” Briggs v. State Employees Retirement Commission, supra. We conclude that there was substantial evidence in the record to support the board’s findings and conclusions on these charges.
[669]*669As to the charge regarding the sexological examination, the relevant patient testified before the panel to the details of physical contact that had taken place between herself and the plaintiff over the course of approximately two years, although she denied that the contact had occurred in the context of a “sexological examination.” The plaintiff testified to the contrary, stating that his physical contact with this patient was part of a sexological examination he had conducted, and he described certain circumstances surrounding that examination. The board had evidence before it concerning the appropriate professional guidelines for such examinations. We conclude on this record that substantial evidence exists to support the board’s conclusions that the contact with this patient was either inappropriate sexual conduct or a sexological examination performed in a manner and under conditions inappropriate for the patient.
As to the claims of misprescribing of medication and the failure to monitor a patient’s medication, the record supports the board’s findings that the plaintiff had prescribed Parnate, a mono amine oxidose inhibitor, over a two year period to a patient who had continuing alcohol abuse problems and suicidal ideation. There was expert testimony concerning the close monitoring that was required under these potentially dangerous, even lethal, circumstances. The record supports the finding that this patient was hospitalized after she combined her prescription medication with alcohol, and that subsequently the plaintiff prescribed lithium for her. An expert testified to the need for close monitoring of a patient who combined lithium and alcohol. The patient also testified to the informal manner in which prescriptions had been issued or renewed and the monitoring involved with that practice. The board was entitled to credit her testimony. Although the plaintiff argues that he had contact with the patient through telephone con[670]*670versations, group therapy and other informal contacts, it was within the province of the board to assess the adequacy of his prescribing and monitoring practices in light of the circumstances presented by this patient. The board could rely on its own expertise in this regard. See Jaffe v. Department of Health, supra, 349. We conclude that there was substantial evidence to support the board’s conclusions that the plaintiff had violated General Statutes § 20-13c (4) and (5) in regard to this charge.
Finally, with regard to the mishandling of the transference phenomena with four patients, the record supports the board’s finding that all four patients were in a state of positive transference to him. The plaintiff did not dispute that finding; rather, he claims that the board could not have concluded that his management of the transference under the behavioral school of therapy was inappropriate. Yet the board had substantive evidence before it regarding the multiple forms of behavioral therapy and how these differed from psychodynamic forms of therapy in their management of transference. Evidence in the record also exists to support the fact that the plaintiff had sexual and nonsexual physical contact with four patients, and that he gave to and received token gifts from them. The board was entitled to rely on its own expertise in concluding that a failure to maintain boundaries and to act strictly as a therapist, such as occurred in this case, would be improper, under any therapeutic approach, and in violation of § 20-13c (4). See id.
We cannot conclude on the basis of this record that the trial court’s determination that substantial evidence existed to support the board's findings and conclusions was improper.
B
The plaintiff has raised numerous claims in support of his assertion that the trial court improperly rejected [671]*671his contention that the board’s procedures in hearing and adjudicating his case violated his constitutional rights to due process. Emphasizing the complexity of his case, he maintains that his constitutional rights were impaired because: (1) the panel members who heard the case missed meetings; (2) the board members were permitted to vote without having attended the hearing or having read the record; (3) the length and discontinuity of the hearing process caused the plaintiff irreparable injury; (4) he was improperly precluded from conducting discovery; and (5) the same attorney providing neutral legal advice to the board on matters of procedure represented the board and the department on appeal.
We have repeatedly held that “[t]he procedures required by the UAPA exceed the minimal procedural safeguards mandated by the due process clause”; Adamchek v. Board of Education, supra, 369; Pet v. Department of Health Services, supra, 356-57; Taylor v. Robinson, 171 Conn. 691, 698, 372 A.2d 102 (1976); and specifically have held that § 4-179 as previously codified passes constitutional muster. Local 1303 & Local 1378 v. Freedom of Information Commission, 191 Conn. 173, 180, 463 A.2d 613 (1983). We decline to revisit this issue today.
In light of these holdings, we agree with the trial court that the plaintiff has failed to establish his claims of constitutional deprivation.
We turn first to the plaintiffs complaint regarding the failure of the panel members who drafted the “Proposed Final Decision” to attend the evidentiary hearing in its entirety. General Statutes (Rev. to 1985) § 4-179 provides in relevant part that, “[w]hen in a contested case a majority of the officials of the agency who are to render the final decision have not heard the case or read the record, the decision . . . shall not be made [672]*672until a proposal for decision is served upon the parties .... The proposal for decision shall contain a statement of the reasons therefor and of each issue of fact or law necessary to the proposed decision, prepared by the person who conducted the hearing or one who has read, the record. ...” (Emphasis added.) This provision establishes adequate procedural safeguards, in addition to those that may be established by the board, to protect the plaintiffs due process rights. Pet v. Department of Health Services, supra, 362. When, as in this case, the administrative decision makers have not themselves “heard the case or read the record,”14 § 4-179 permits the drafting of a proposal for decision by a person who has either conducted the hearing, and so heard all of the evidence, or who has read the record in its entirety.
In this case, in the absence of full acquaintance with the record on the part of a majority of the administrative decision makers,15 the board designated a panel of four persons as hearing officers to conduct the evidentiary hearing, all of whom are purported to have voted on the proposed final decision.16 As a constitutional matter, if each panel member met the minimum criteria of § 4-179, i.e., if each had heard all of the evidence or read the entire record, the plaintiff’s due process rights were adequately protected.
[673]*6732
We next turn to the plaintiff’s claim that the trial court improperly concluded that his right to due process had not been violated, even though six of the seven board members who voted on the final decision had not attended the hearings or read the record. The plaintiff specifically asserts that none of the board members was sufficiently familiar with the record to render a final decision.
The express assumption of § 4-179 is that a board may render a final decision even when no board member has heard the evidence or read the record, provided that the board complies with the designated UAPA procedural safeguards.17 When hearing officers have been designated, under § 4-179, the responsibility of aboard member rendering a final decision is distinct from that of a hearing officer drafting a proposed final decision. In regard to administrative proceedings, we have held that “where hearings are required by statute, a [board] member need not be present in order to participate in decisions [i]f that member acquaints himself sufficiently with the issues raised and the evidence and arguments presented at the public hearing in order to exercise an informed judgment. Loh v. Town Plan & Zoning Commission, 161 Conn. 32, 42, 282 A.2d 894 [1971].” (Internal quotation marks omitted.) New Haven v. Public Utilities Commission, 165 Conn. 687, 724, 345 A.2d 563 (1974). The UAPA procedures generally requiring a public hearing in contested cases, and § 4-179 in particular,18 are patently sufficient to safeguard basic due process rights. See Pet v. Department of Health Services, supra.
[674]*6743
The plaintiff next claims that his right to due process was violated because the length and discontinuity of the hearing process caused him irreparable injury. The trial court denied this due process claim, noting that “the most significant interruptions in the hearing schedule were caused by the plaintiff himself. In particular, his unsuccessful action for injunctive relief consumed nearly one and one-half years.” We cannot disagree with the trial court’s conclusions. See Pet v. Department of Health Services, supra, 362-66 (denial of a continuous hearing does not per se constitute a denial of due process).
It is fatal to the plaintiff’s claim of a due process violation that he failed to utilize the statutory remedies that were available to him to compel a prompt agency decision. See, e.g., General Statutes (Rev. to 1985) § 4-180 (b).19 A litigant who forgoes an available remedy to cure a defect may be found to have waived the right to object thereto. Jutkowitz v. Department of Health Services, supra, 95; see also Finkenstein v. Administrator, 192 Conn. 104, 114, 470 A.2d 1196 (1984) (this court “will not set aside an agency’s determination upon a ground not theretofore fairly presented for its consideration”). This claim is without merit.
[675]*6754
The plaintiff next claims that the trial court improperly held that his right to due process had not been violated because he was precluded from conducting prehearing discovery. We disagree with this claim as well.
“It is well-settled that parties to judicial or quasi-judicial proceedings are not entitled to pre-trial discovery as a matter of constitutional right.” (Internal quotation marks omitted.) Pet v. Department of Health Services, supra, 356. “Pretrial discovery may be expressly authorized by statute, but, absent an express provision, the extent to which a party to an administrative proceeding is entitled to discovery is determined by the rules of the particular agency.” Id., 357.
The plaintiff has failed to identify any statutory or regulatory right to prehearing discovery that he was denied. The plaintiff has further failed to establish that he was “denied due notice of the hearing, the right to produce relevant evidence, the right to cross-examine witnesses produced by his adversary, [or] the right to be fairly apprised of the facts upon which the agency [acted]” by virtue of a denial of prehearing discovery. Id., 360 -61. The trial court correctly concluded that “the record in this case does not support the plaintiffs contention that he was unable to obtain the information he sought.”
The defendant further claims that he was denied due process because the same attorney who had provided supposedly neutral legal advice to the board on matters of procedure had represented the board and the department on an interlocutory appeal and continues to represent the board in this appeal. The plaintiff has [676]*676cited no authority in support of this claim, nor offered any argument or evidence as to how he was prejudiced by this alleged dual role. See Commission on Special Revenue v. Freedom of Information Commission, 174 Conn. 308, 321-22, 387 A.2d 533 (1978). This issue is, therefore, not sufficiently briefed to warrant further review. See Practice Book § 4065; Latham & Associates, Inc. v. William Raveis Real Estate, Inc., 218 Conn. 297, 300, 589 A.2d 337 (1991); Gaynor v. Union Trust Co., 216 Conn. 458, 482, 582 A.2d 190 (1990); Isaac v. Mount Sinai Hospital, 210 Conn. 721, 732, 557 A.2d 116 (1989); State v. Person, 20 Conn. App. 115, 130, 564 A.2d 626 (1989), aff'd, 215 Conn. 653, 577 A.2d 1036 (1990), cert. denied, 498 U.S. 1048, 111 S. Ct. 756, 112 L. Ed. 2d 776 (1991).
C
Although the plaintiffs constitutional arguments lack merit, he also raised a number of issues concerning alleged procedural deviations from the statutory mandates governing the administrative proceedings in his case.20 He maintains that the record does not substantiate full compliance with the requirements of § 4-179 and renews the request that he made in the trial court to be afforded the opportunity to supplement the record in order to document the absence of such compliance.
The plaintiffs claims of statutory noncompliance are that, contrary to § 4-179: (1) the board improperly [677]*677deferred to the department’s attorney; (2) the board impermissibly imposed a penalty greater than that recommended by the panel; (3) the board failed to maintain a proper record by denying his request to make a transcript of the board’s meetings when oral presentation, discussion, and the final vote were taken; (4) the members of the hearing panel neither attended all the hearings nor read the record in its entirety; (5) the board failed to familiarize itself properly with the evidence and the plaintiff’s brief in opposition to the proposal for decision; and (6) the board lost critical records.
We may dispose of the plaintiff’s first three claims of procedural irregularities in summary fashion. As the trial court correctly concluded, none is supported by the record.
The plaintiff’s first issue is effectively a claim of bias. “It is presumed that members of administrative boards acting in an adjudicative capacity are unbiased.” Jutkowitz v. Department of Health Services, supra, 100. The party claiming bias bears the burden of proving a disqualifying interest. Id. We cannot conclude, upon a review of the record, that the trial court was incorrect in holding that the plaintiff had presented no evidence to meet this burden.
The plaintiff’s second claim is that the board abused its discretion by imposing a five year suspension, with conditions, in contrast to the three year recommendation made by the panel. Section 20-13c authorizes the board to revoke the plaintiff’s license permanently. “If the penalty meted out is within the limits prescribed by law, the matter lies within the exercise of the [agency’s] discretion and cannot be successfully challenged unless the discretion has been abused.” Gibson v. Connecticut Medical Examining Board, 141 Conn. 218, 230, 104 A.2d 890 (1954). Sentencing is an inher[678]*678ently fact bound inquiry. In an administrative appeal, a reviewing “court can do no more, on the factual questions presented, than to examine the record to determine whether the ultimate findings were supported, as the statute requires, by substantial evidence.” Persico v. Maher, 191 Conn. 384, 409, 465 A.2d 308 (1983). The record supports the trial court’s conclusion that the board did not abuse its discretion in suspending him for five years.
The plaintiff’s third claim is that the board failed to maintain a proper record by denying his request to make a transcript of the board’s meetings when oral presentation, discussion, and the final vote were taken. In a contested case, an agency is required to transcribe all oral proceedings if so requested by a party, at that party’s expense. General Statutes (Rev. to 1985) § 4-177 (f).21 We conclude that, in this case, the board improperly denied the plaintiff’s request to transcribe the relevant board meetings, since they were “oral proceedings” as contemplated by § 4-177 (f). We cannot conclude, however, that the plaintiff was prejudiced by this procedural error, since he was permitted to have tape recordings of the board meetings made by a professional reporting service at his own expense. The plaintiff argues that the board improperly denied his request to include these recordings as part of the record in his case, but fails to cite authority in support of this claim. To the contrary, General Statutes (Rev. to 1985) § 4-177 (e),22 which delineates the scope of a rec[679]*679ord in a contested case, contains no express authority for inclusion of posthearing transcripts. We note, further, that General Statutes (Rev. to 1985) § 4-183 (f) allows for supplementation of the record by the trial court if alleged administrative procedural irregularities are not reflected therein. These provisions adequately protected the plaintiff’s right to appeal the board’s decision in this case. The trial court correctly concluded that the plaintiff had not met his burden with respect to this claim.
The plaintiff’s remaining claims of procedural irregularity stand on a different footing. We agree with the plaintiff that, with regard to these issues, the requisite procedural facts are sufficiently unclear so that the trial court improperly denied his motion to supplement the agency record.
General Statutes (Rev. to 1985) § 4-183 (f) provides in relevant part that an administrative appeal “shall be confined to the record [but that i]n cases of alleged irregularities in procedure before the agency, not shown in the record, proof thereon may be taken in the court. . . .”“‘An appeal from an administrative tribunal should ordinarily be determined upon the record of that tribunal, and only when that record fails to present the hearing in a manner sufficient for the determination of the merits of the appeal, or when some extraordinary reason requires it, should the court hear the evidence.’ Tarasovic v. Zoning Commission, 147 Conn. 65, 69, 157 A.2d 103 (1959); Levinson v. Board of Chiropractic Examiners, 211 Conn. 508, 530, 560 A.2d 403 (1989). The determination of whether the trial court improperly denied the plaintiff’s motion to supplement the record is made on the basis of the abuse of discretion standard. Leib v. Board of Examiners for [680]*680Nursing, 177 Conn. 78, 93, 411 A.2d 42 (1979).” Adriani v. Commission on Human Rights & Opportunities, supra, 325-26.
The plaintiff has renewed in this court the argument that he made to the trial court that the panel members in their entirety had not attended the hearing or read the record, that the board members were not sufficiently familiar with the record to render a final decision, and that the board lost critical evidence. These contentions are not frivolous.
In support of these claims, the plaintiff had moved the trial court to supplement the record with tape recordings of posthearing board meetings made at his expense by a professional agency. The trial court denied this motion. At the trial court hearing, the plaintiff again sought to supplement the record with his own testimony and that of his wife. He argued that comments made during the course of the board meetings at which his matter was presented were necessary to prove that procedural irregularities had occurred. The plaintiff contended that this testimony would establish procedural errors in that: (1) the plaintiff had not been given a proper opportunity to be heard; (2) the board had solicited a response from only one side; (3) the board members lacked familiarity with the record; and (4) the board members had not read the record or documents submitted to the board by the plaintiff pursuant to § 4-179. The plaintiff also argued that in order to protect his rights on appeal he should have the benefit of an adequate record, including tapes from the board meetings. The trial court denied this motion to supplement the record on the grounds that: (1) the plaintiff had an adequate opportunity to present these arguments either in his petition for reconsideration of the board’s final decision or in his argument to that court; and (2) in particular, § 4-179 did “not require that the [681]*681members of the agency who render the final decision be present at the hearings or even have read the record .. . .”
The trial court’s first rationale was premised on the record’s adequacy for appellate review.23 “When, however, the trial court applies the substantial evidence test in reviewing [an agency’s] decision . . . as it did in this case, it is inappropriate to refuse extrinsic evidence of alleged procedural irregularities on the ground that the existing record is adequate to conduct the review. The substantial evidence test assumes that an agency’s decision is not tainted by procedural irregularities that implicate the validity of the decision itself.” Adriani v. Commission on Human Rights & Opportunities, supra, 327. The rationale of Adriani applies to all procedural irregularities, including an agency’s failure to comply with statutory procedural mandates in reaching its decision.
The trial court’s second rationale improperly assumed that the board had complied with § 4-179. We have stated that the protective function of § 4-179 was served if each panel member met that statute’s minimum requirements: to have heard all of the evidence or to have read the entire record before preparing a proposal for decision. Because the record indicates that none of the panel members attended the hearing in its entirety,24 the only question that remains is whether the four panel members read the record. The minutes of the March 19,1991 meeting of the board state that [682]*682three of the four panel members actively participated in the drafting of the proposal for decision, and that one of those three had read the record in its entirety as of that board meeting. The record is insufficient, however, to determine whether the other three panel members had also read the record in its entirety as required by § 4-179.
The plaintiff asserts that the board lacked sufficient familiarity with the record to render a final decision. He argued before the trial court that at least one board member had remarked during a board meeting that he had not read the plaintiffs brief in opposition to the proposal for decision, and that other members were unfamiliar with the evidence. The plaintiff also contends that the board lost critical records.25 The record before us does not reveal whether the importance and timing of the loss of the records impacted on the board’s ability to be fully informed of the issues before it, or whether the board was sufficiently familiar with the record of this case to make an informed judgment in compliance with § 4-179. The trial court, therefore, lacked any basis for determining whether the board had complied with the mandates of the UAPA.
It is well established that “a license to practice medicine is a recognized property right and may only be revoked under procedures that comport with constitutional due process of law. Bell v. Burson, 402 U.S. 535, 539, 91 S. Ct. 1586, 29 L. Ed. 2d 90 (1971).” Pet v. Department of Health Services, supra, 353-54. “[W]hen the government seeks to deprive a person of life, liberty or property, [due process requires] that the thoroughness of the procedure by which the deprivation is effected must be balanced against the gravity [683]*683of the potential loss and the interests at stake, and . . . that the procedure involved must be appropriate to the nature of the case. See Mullane v. Central Hanover Bank & Trust Co., 339 U.S. 306, 313, 70 S. Ct. 652, 94 L. Ed. 865 [1949]; Anderson National Bank v. Luckett, 321 U.S. 233, 246, 64 S. Ct. 599, 88 L. Ed. 692 [1944].” (Internal quotation marks omitted.) Leib v. Board of Examiners for Nursing, supra, 83; see also Concerned Citizens of Sterling, Inc. v. Connecticut Siting Council, 215 Conn. 474, 484, 576 A.2d 510 (1990). Because the UAPA is designed and intended to safeguard minimal due process rights; see Pet v. Department of Health Services, supra, 356-57; strict compliance with its mandate is necessary to ensure that significant property rights are not unlawfully destroyed.
We note that General Statutes § 20-8a, concerning the composition and procedures of the medical examining board, has been revised since the commencement of the hearing in this case to codify more rigorous procedural protections designed to ensure fairness in its administrative proceedings.26 Additionally, a recent [684]*684amendment to § 4-179 eliminates the authority of a hearing officer who has not conducted a hearing to draft a proposed final decision.27 In light of the enhanced legislative concern for fairness in administrative proceedings that is evidenced by these recent codifications, we view the specific allegations of procedural irregularity in this case as particularly grave.
Consequently, because of the potentially crucial impact of the plaintiffs claims of procedural irregularities on the propriety of the board’s decision, we conclude that the trial court abused its discretion in denying the plaintiff the opportunity to present evidence that would supplement the agency record. Because the alleged procedural irregularities are not apparent on the face of the record, we remand this matter to allow supplementation of the record, including a consideration of the admissibility of the tape record[685]*685ings and necessary testimonial evidence in order to determine whether there has been full compliance with § 4-179.
The judgment is set aside and the case is remanded to the trial court to allow supplementation of the record and for further proceedings in accordance with this opinion.
In this opinion Callahan, Katz and Palmer, Js., concurred.