OPINION AND ORDER
BROWN, District Judge.
Plaintiff Peter L. Feskens seeks judicial review of a final decision of the Commissioner of the Social Security Administration (SSA) in which he denied Plaintiffs application for Disability Insurance Benefits (DIB) under Title II of the Social Security Act. This Court has jurisdiction to review the Commissioner’s decision pursuant to 42 U.S.C. § 405(g).
For the reasons that follow, the Court REVERSES the decision of the Commissioner and REMANDS this matter pursu[1111]*1111ant to sentence four of 42 U.S.C. § 405(g) for the immediate calculation and award of benefits.
ADMINISTRATIVE HISTORY
This matter is now nearly fifteen years old and has a record that is nearly 1,000 pages. Plaintiff filed his initial application for DIB on April 18, 1996. Tr. 483, 504-06.1 His application was denied initially and on reconsideration. Tr. 767. An Administrative Law Judge (ALJ) held a hearing on December 9, 1997. Tr. 316-406. Plaintiff was represented by an attorney at the hearing. Tr. 316. Plaintiff; Plaintiffs mental health counselor, Delana Beaton, M.A.; two Medical Experts (ME); and a Vocational Expert (VE) testified. Tr. 316-406.
An ALJ issued an opinion on March 14, 1998, and found Plaintiff was not disabled and, therefore, was not entitled to benefits. Tr. 767-78. The Appeals Council vacated the ALJ’s decision on September 23, 1999, and remanded the matter for further proceedings consistent with its order. Tr. 787-90. Accordingly, an ALJ held another hearing on June 15, 2000, at which Plaintiff was represented by an attorney. Tr. 259-3l5. Plaintiff; examining psychologist, Robert Kruger, Ph.D.; and a VE testified at the hearing. Tr. 259-315.
An ALJ issued a second opinion on September 19, 2000, and again found Plaintiff was not disabled and, therefore, was not entitled to benefits. Tr. 44-57. That decision became the final decision of the Commissioner on September 25, 2002, when the Appeals Council denied Plaintiffs request for review. Tr. 459-60.
On October 31, 2000, Plaintiff filed a new application for DIB alleging a disability onset date of September 1, 2000, which was denied initially and on reconsideration. Tr. 72-79, 88-89. An ALJ held a hearing on January 8, 2003, at which Plaintiff was represented by an attorney. Tr. 241-58. Plaintiff and a VE testified at the hearing. Tr. 241-58. An ALJ issued an opinion on February 27, 2003, in which he found the decision on September 19, 2000, was binding for the period between March 3, 1996, and September 19, 2000. Tr. 24-32. The ALJ found Plaintiff was not disabled for the period after September 19, 2000, through Plaintiffs date last insured on December 31, 2001, and, therefore, was not entitled to benefits. Tr. 24-32. That decision became the final decision of the Commissioner on April 6, 2004, when the Appeals Council denied Plaintiffs request for review. Tr. 9-11.
On June 3, 2004, Plaintiff sought review of the Commissioner’s decision in the District Court for the District of Oregon. The Court remanded the matter on November 4, 2005, for further administrative proceedings. Tr. 898-905.
An ALJ held another hearing on July 26, 2006, at which Plaintiff was represented by an attorney. Tr. 968-81. Although Plaintiff did not testify, his counsel made a statement on his behalf. Tr. 968-81. The ALJ issued an opinion on September 15, 2006, and found Plaintiff was not disabled and, therefore, was not entitled to benefits. Tr. 897A-897P. On April 14, 2007, the Appeals Council vacated the ALJ’s decision and remanded the matter to a different ALJ for further proceedings consistent with its order. Tr. 938-40.
An ALJ held another hearing on December 3, 2007, at which Plaintiff was represented by an attorney. Tr. 982-87.2 [1112]*1112Plaintiff was not present and his counsel agreed no further testimony was required. Tr. 982-97. On May 9, 2008, the ALJ issued an opinion and found Plaintiff was not disabled and, therefore, was not entitled to benefits before his date last insured. Tr. 425-41. That decision became the final decision of the Commissioner on November 30, 2009, when the Appeals Council denied Plaintiffs request for review. Tr. 407-09.
On February 2, 2010, Plaintiff filed his Complaint seeking review of the Commissioner’s decision by this Court.
BACKGROUND
Plaintiff was fifty-one years old at the time of the most recent hearing. Tr. 504, 982. Plaintiff did not finish high school or obtain a high-school equivalency degree. Tr. 522. He has performed past work as a security guard. Tr. 254. Plaintiff alleges a disability onset date of September 1, 2000. Tr. 88.
On March 10, 1996, Plaintiff suffered a massive myocardial infarction that left him with reduced left-ventricle function and poor exercise tolerance. Tr. 680-81. Plaintiff has been diagnosed with ischemia, severe coronary artery disease, hypertension, chest pain due to angina, anoxic brain insult, diabetes, peripheral neuropathy, chronic fatigue, and bursitis in both shoulders. Tr. 189, 200-01, 206, 594, 652, 852, 857-58, 875, 967.
Plaintiff also has been diagnosed with psychological impairments including major depressive disorder, borderline intellectual functioning, post-traumatic stress disorder, and personality and affective disorders. Tr. 140-41,192, 674, 751-52, 880.
Plaintiff alleges he is disabled due to an inability to perform many daily activities due to extreme exercise intolerance; chronic fatigue that forces him to take daily naps; difficulty with memory and concentration due to cognitive deficits; and pain in his chest, neck, shoulders, and feet that limits his ability to stand, to walk, to lift, to carry, and to sit. Tr. 96-119.
Except when noted, Plaintiff does not challenge the ALJ’s summary of the medical evidence. After reviewing the medical records, the Court adopts the ALJ’s summary of the medical evidence. See Tr. 428-32.
STANDARDS
The initial burden of proof rests on the claimant to establish disability. Ukolov v. Barnhart, 420 F.3d 1002, 1004 (9th Cir.2005). To meet this burden, a claimant must demonstrate his inability “to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which ... has lasted or can be expected to last for a continuous period of not less than 12 months.” 42 U.S.C. § 423(d)(1)(A). The Commissioner bears the burden of developing the record. Reed v. Massanari, 270 F.3d 838, 841 (9th Cir.2001).
The district court must affirm the Commissioner’s decision if it is based on proper legal standards and the findings are supported by substantial evidence in the record as a whole. 42 U.S.C. § 405(g). See also Batson v. Comm’r of Soc. Sec. Admin., 359 F.3d 1190, 1193 (9th Cir.2004). “Substantial evidence means more than a mere scintilla, but less than a preponderance, i.e., such relevant evidence as a reasonable mind might accept as adequate to support a conclusion.” Robbins v. [1113]*1113Soc. Sec. Admin., 466 F.3d 880, 882 (9th Cir.2006)(internal quotations omitted).
The ALJ is responsible for determining credibility, resolving conflicts in the medical evidence, and resolving ambiguities. Edlund v. Massanari, 253 F.3d 1152, 1156 (9th Cir.2001). The court must weigh all of the evidence whether it supports or detracts from the Commissioner’s decision. Robbins, 466 F.3d at 882. The Commissioner’s decision must be upheld even if the evidence is susceptible to more than one rational interpretation. Webb v. Barnhart, 433 F.3d 683, 689 (9th Cir.2005). The court may not substitute its judgment for that of the Commissioner. Widmark v. Barnhart, 454 F.3d 1063, 1070 (9th Cir.2006).
DISABILITY ANALYSIS
I. The Regulatory Sequential Evaluation
The Commissioner has developed a five-step sequential inquiry to determine whether a claimant is disabled within the meaning of the Act. Parra v. Astrue, 481 F.3d 742, 746 (9th Cir.2007). See also 20 C.F.R. § 404.1520. Each step is potentially dispositive.
In Step One, the claimant is not disabled if the Commissioner determines the claimant is engaged in substantial gainful activity. Stout v. Comm’r Soc. Sec. Admin., 454 F.3d 1050, 1052 (9th Cir.2006). See also 20 C.F.R. § 404.1520(a)(4)(i).
In Step Two, the claimant is not disabled if the Commissioner determines the claimant does not have any medically severe impairment or combination of impairments. Stout, 454 F.3d at 1052. See also 20 C.F.R. §§ 404.1509, 404.1520(a)(4)(ii).
In Step Three, the claimant is disabled if the Commissioner determines the claimant’s impairments meet or equal one of the listed impairments that the Commissioner acknowledges are so severe as to preclude substantial gainful activity. Stout, 454 F.3d at 1052. See also 20 C.F.R. § 404.1520(a) (4) (iii). The criteria for the listed impairments, known as Listings, are enumerated in 20 C.F.R. part 404, subpart P, appendix 1 (Listed Impairments).
If the Commissioner proceeds beyond Step Three, he must assess the claimant’s residual functional capacity (RFC). The claimant’s RFC is an assessment of the sustained, work-related physical and mental activities the claimant can still do on a regular and continuing basis despite his limitations. 20 C.F.R. § 404.1520(e). See also Social Security Ruling (SSR) 96-8p. A “regular and continuing basis’ means 8 hours a day, for 5 days a week, or an equivalent schedule.” SSR 96-8p, at *1. In other words, the Social Security Act does not require complete incapacity to be disabled. Smolen v. Chater, 80 F.3d 1273, 1284 n. 7 (9th Cir.1996). The assessment of a claimant’s RFC is at the heart of Steps Four and Five of the sequential analysis engaged in by the ALJ when determining whether a claimant can still work despite severe medical impairments. An improper evaluation of the claimant’s ability to perform specific work-related functions “could make the difference between a finding of ‘disabled’ and ‘not disabled.’” SSR 96-8p, at *4.
In Step Four, the claimant is not disabled if the Commissioner determines the claimant retains the RFC to perform work he has done in the past. Stout, 454 F.3d at 1052. See also 20 C.F.R. § 404.1520(a)(4)(iv).
If the Commissioner reaches Step Five, he must determine whether the claimant is able to do any other work that exists in the national economy. Stout, 454 F.3d at 1052. See also 20 C.F.R. § 404.1520(a)(4)(v). Here the burden shifts to the Commissioner to show a significant number of jobs exist in the nation[1114]*1114al economy that the claimant can perform. Tackett v. Apfel, 180 F.3d 1094, 1098 (9th Cir.1999). The Commissioner may satisfy this burden through the testimony of a VE or by reference to the Medical-Vocational Guidelines set forth in the regulations at 20 C.F.R. part 404, subpart P, appendix 2. If the Commissioner meets this burden, the claimant is not disabled. 20 C.F.R. § 404.1520(g)(1).
ALJ’S FINDINGS
At Step One, the ALJ found Plaintiff did not engage in substantial gainful activity between September 1, 2000, and December 31, 2001, his date last insured. Tr. 428.
At Step Two, the ALJ found Plaintiff has the following severe impairments: diabetes with peripheral neuropathy, chronic heart disease status post-myocardial infarction, obesity, depression, post-traumatic stress disorder, personality disorder, borderline intellectual functioning, ongoing alcohol abuse, and polysubstance abuse in remission. Tr. 428.
At Step Three, the ALJ found Plaintiff does not have an impairment or combination of impairments that meets or medically equals a Listed Impairment in 20 C.F.R. Part 404, Subpart P, Appendix 1, through his date last insured. Tr. 1137. The ALJ found Plaintiff has the RFC to
lift and carry ten pounds occasionally and less than ten pounds frequently. During an eight-hour day, he can sit for up to six hours and stand or walk for up to two hours. Furthermore, he must not use ladders, ropes or scaffolds, and is limited to only occasional climbing, balancing, stooping, kneeling, crouching and crawling. Finally, the claimant is limited to simple, routine, repetitive work, requiring only occasional interaction with co-workers and the public.
Tr. 433.
At Step Four, the ALJ concluded Plaintiff is unable to perform any of his past relevant work. Tr. 439.
At Step Five, the ALJ concluded Plaintiff has a sufficient RFC to perform jobs that exist in significant numbers in the national economy. Tr. 440. Specifically, the ALJ found Plaintiff has the ability to perform jobs that require sedentary work such as small-products assembler, sporting-goods assembler, and microfilmer.3 Tr. 440-41. Thus, the ALJ concluded Plaintiff is not disabled and, therefore, is not entitled to Social Security benefits.
DISCUSSION
Plaintiff contends the ALJ erred by improperly discrediting the medical opinions of Plaintiffs treating physician, John Fitzgerald, M.D.; treating physician James P. Lowry, M.D.; treating physician, William A. Moreno, M.D.; examining physician, James E. Devorss, M.D.; and examining physician, Daniel J. Bailly, M.D. Plaintiff also contends the ALJ erred by (1) improperly discrediting Plaintiffs testimony as to the intensity, persistence, and limiting effect of Plaintiffs symptoms and (2) failing to include all of Plaintiffs functional limitations in formulating the hypothetical posed to the VE.
I. ALJ’s Reasons for Discrediting the Opinions of Drs. Fitzgerald, Lowry, Moreno, Devorss, and Bailly.
Plaintiff contends the ALJ did not give legally sufficient reasons for discrediting the opinions of Drs. Fitzgerald, Lowry, Moreno, Devorss, and Bailly.
[1115]*1115An ALJ may reject a treating physician’s opinion when it is inconsistent with the opinions of other treating or examining physicians if the ALJ makes “findings setting forth specific, legitimate reasons for doing so that are based on substantial evidence in the record.” Lingenfelter v. Astrue, 504 F.3d 1028, 1042 (9th Cir.2007)(quoting Orn v. Astrue, 495 F.3d 625, 632 (9th Cir.2007)). When the medical opinion of a treating physician is uncontroverted, however, the ALJ must give “clear and convincing reasons” for rejecting it. Lester, 81 F.3d at 830-32. “The opinion of an examining physician is, in turn, entitled to greater weight than the opinion of a nonexamining physician.” Id.
A nonexamining physician is one who neither examines nor treats the claimant. Lester, 81 F.3d at 830. “The opinion of a nonexamining physician cannot by itself constitute substantial evidence that justifies the rejection of the opinion of either an examining physician or a treating physician.” Id. at 831. When a nonexamining physician’s opinion contradicts an examining physician’s opinion and the ALJ gives greater weight to the nonexamining physician’s opinion, the ALJ must articulate her reasons for doing so. See, e.g., Morgan v. Comm’r of Soc. Sec. Admin., 169 F.3d 595, 600-01 (9th Cir.1999). A nonexamining physician’s opinion can constitute substantial evidence if it is supported by other evidence in the record. Id. at 600.
A. Dr. Fitzgerald’s Opinion.
Dr. Fitzgerald was Plaintiffs treating physician for several years beginning in July 2000 and saw Plaintiff as often as three times per month. Tr. 199-200, 206-32. Dr. Fitzgerald diagnosed Plaintiff with and treated Plaintiff for diabetes, peripheral neuropathy, claudication, bursitis, and ongoing effects of Plaintiffs heart condition. Tr. 199-200, 206-32. In particular, Dr. Fitzgerald repeatedly noted Plaintiffs diabetes was very difficult to control. Tr. 212-17, 224-32.
On December 31, 2002, at the request of Plaintiffs counsel, Dr. Fitzgerald provided his assessment of Plaintiffs medical conditions. He found Plaintiff suffers from cyanotic feet, high blood pressure, congestive heart failure, and cognitive dysfunction in addition to diabetes, peripheral neuropathy, and claudication. Tr. 235. Dr. Fitzgerald opined Plaintiff is limited in his ability to perform work-related functions because of pain in his feet that limits his ability to walk, shortness of breath that results from his heart condition, depression, and cognitive deficits. Tr. 235. Dr. Fitzgerald noted Plaintiffs cognitive dysfunction and short-term memory deficits hamper his ability to control his diabetes and to perform more than simple, routine tasks. Tr. 235. Dr. Fitzgerald opined Plaintiff could not sustain employment for 40 hours per week if he had to lift more than five pounds frequently or more than ten pounds occasionally, could not change positions as needed due to pain, and did not have the option of elevating his foot. Tr. 235. Dr. Fitzgerald concluded Plaintiff would miss more than one day per month due to health reasons. Tr. 235.
On March 9, 2004, again at the request of Plaintiffs counsel, Dr. Fitzgerald opined Plaintiff, as of his date last insured on December 31, 2001, suffered from limitations similar to those he described in December 2002. Tr. 239. As the bases for his opinion that Plaintiff is “not medically able to work,” Dr. Fitzgerald also relied on Plaintiffs admission to the hospital for severe cardiac failure (which Dr. Fitzgerald does not believe is likely to improve), chronic depression, difficult-to-control diabetes, and peripheral neuropathy. Tr. 235-36, 240.
[1116]*11161. ALJ’s Decision.
The ALJ concluded Dr. Fitzgerald’s opinion that Plaintiff suffered the limitations described as of Plaintiffs date last insured could not be “afforded significant weight” on four grounds: (1) Dr. Fitzgerald’s treatment notes do not support the conclusion that Plaintiff suffered from peripheral neuropathy before December 31, 2001; (2) Dr. Fitzgerald’s conclusion that Plaintiff suffered brain damage as a result of his myocardial infarction is contradicted by the record; and (3) the record contradicts Dr. Fitzgerald’s assessment of Plaintiffs “severe heart failure.” Tr. 438.
2. Analysis.
The ALJ concluded Dr. Fitzgerald’s treatment records do not reflect Plaintiff suffered from peripheral neuropathy before Plaintiffs date last insured on December 31, 2001. Dr. Fitzgerald’s treatment notes, however, indicate otherwise. Although the ALJ points to a number of Dr. Fitzgerald’s treatment notes beginning in 2002 in which he records Plaintiffs reports of pain in his feet and diagnoses peripheral neuropathy, there are numerous records prior to Plaintiffs date last insured in which Plaintiff complains of leg cramps from walking and numbness in his feet. See Tr. 220, 225-26. Moreover, the ALJ does not identify any medical evidence in the record that contradicts Dr. Fitzgerald’s statement that Plaintiff suffered from the symptoms of peripheral neuropathy before December 31, 2001, nor does the ALJ provide any basis to support his implication that pain is the only symptom indicative of peripheral neuropathy. Although the ALJ notes Plaintiff was not officially diagnosed with peripheral neuropathy until early 2002, that alone is not enough to undermine Dr. Fitzgerald’s opinion as Plaintiffs treating physician that Plaintiff suffered from before that time.
The Court also notes a significant portion of this record reflects attempts by Plaintiffs physicians to manage Plaintiffs diabetes, which was diagnosed for the first time in late 2000. Those records demonstrate Plaintiff suffered a number of complications from diabetes requiring close management by Dr. Fitzgerald. Tr. 199-200, 206-32. Thus, in light of the record as a whole, the ALJ’s reliance on Dr. Fitzgerald’s records beginning in 2002 is not a legally sufficient basis for rejecting Dr. Fitzgerald’s medical opinion that Plaintiff suffered the impairments and limitations as he described in December 2002 before Plaintiffs date last insured.
As noted, the ALJ also found Dr. Fitzgerald’s conclusion that Plaintiff suffered brain damage as a result of the lack of oxygen in the minutes following his heart attack in March 1996 is contradicted by the record. On September 12, 2000, Dr. Fitzgerald noted Plaintiff suffered from anoxic brain syndrome. Tr. 199. The ALJ points to the treatment notes of Dr. Lowry from December 31, 2002, in which he stated Plaintiff, in fact, suffered “anoxic brain insult, with encephalopathy” from his myocardial infarction, but recovered “to a great extent.” Tr. 201, 652. This statement, however, does not undermine Dr. Fitzgerald’s note that Plaintiff suffered a brain injury due to anoxia, which is corroborated by the report of Dr. Bailly at the time of Plaintiffs release from the hospital following his heart attack. Tr. 591-95. Moreover, both Drs. Lowry and Fitzgerald repeatedly note Plaintiff suffers from cognitive deficits despite their lack of certainty as to the cause. Tr. 201-02, 223, 225, 230, 235, 677. In addition, Plaintiffs cognitive dysfunction is supported by numerous psychological examiners that conclude Plaintiff has borderline intellectual functioning with impaired short-term memory, which even the ALJ found to be severe. Tr. 428, 751, 880-81, 891. In light of the [1117]*1117record as a whole, the Court does not find Dr. Fitzgerald’s reference to Plaintiffs anoxic brain syndrome to be a sufficient .legal basis to discredit Dr. Fitzgerald’s entire opinion.
The ALJ also concluded Dr. Fitzgerald’s assessment of Plaintiffs “severe heart failure” is not supported by the record. Tr. 438. On the basis of Dr. Lowry’s treatment notes, the ALJ determined Plaintiff suffered “a massive fluid overload” that only required “the usual conventional heart failure medical approach.” Tr. 438. Dr. Lowry’s treatment notes from December 31, 2002, however, reveal Plaintiff has developed “advanced heart failure manifested now and massive fluid retention.” Tr. 202-03. In fact, Dr. Lowry discussed the possibility that Plaintiff would eventually require a heart transplant, but he concluded he was hopefful] the “conventional heart failure medical approach” would succeed in stabilizing Plaintiff. Tr. 203-04.
With the exception of these inconsistencies, the ALJ only pointed to the opinion of a nonexamining Disability Determination Services (DDS) physician4 as contradicting Dr. Fitzgerald’s opinion. Tr. 438. It is not clear from the ALJ’s general reference to the “medical consultant ... for the Agency” and the ALJ’s citation to “Exhibit B-1F,” “B-2F,” and “B-3F” precisely which physician’s opinion the ALJ references. After an extensive review of the record, however, the Court concludes the ALJ has relied on the opinion of DDS physician, William Habjan, D.O. Tr. 535-42. In any event, the opinion of a nonexamining physician alone cannot constitute a sufficient basis for discrediting the opinion of a treating physician. Lester, 81 F.3d at 831.
The Court, therefore, concludes on this record that the ALJ erred when he discredited Dr. Fitzgerald’s opinion without providing legally sufficient reasons supported by substantial evidence in the record for doing so.
B. Dr. Lowry’s Opinion.
Dr. Lowry, Plaintiffs cardiologist, treated Plaintiff for cardiac arrest and myocardial infarction from March 10, 1996, to February 12, 1997. Tr. 201. On March 10, 1996, Dr. Lowry performed an angioplasty on Plaintiff and treated him during his recovery. Tr. 201, 609-13. Dr. Lowry again treated Plaintiff in December 2004 for his “advanced heart failure.” Tr. 203.
On May 22, 1996, Dr. Lowry noted Plaintiffs severe depression, his markedly reduced cardiac reserve, his reduced ventricular function, and his poor exercise tolerance as demonstrated by an exercise test performed on April 10,1996. Tr. 680. Dr. Lowry concluded at that time that Plaintiff was incapable of returning to work as a security guard and found “[i]f [Plaintiff] can do any kind of work at all, it would have to be completely sedentary work.” Tr. 680.
On February 24, 2000, Dr. Lowry responded to a request from the SSA to assess Plaintiffs ability to perform work-related activities. Tr. 870-74. Dr. Lowry responded that Plaintiff is “unable to do work because of several factors, primarily his héart disease, but also depression and a possible learning disorder.” Tr. 870. Dr. Lowry specifically stated:
I have attempted to answer the questions on your medical assessment form, but I find this very difficult to do in any sort of objective way. I really have no good means of telling how long an indi[1118]*1118vidual like this can sit, stand, or walk but having known him and his medical condition, I doubt that he is able to work in any sort of capacity, unless some kind of employment can be found for him that is totally sedentary.
Tr. 870. Dr. Lowry concluded Plaintiff is “totally disabled, permanently.” Tr. 870. Dr. Lowry assessed Plaintiff with the following RFC: able to lift 10 pounds occasionally; unable to carry any weight; able to sit for four hours in an eight-hour work day; unable to stand or to walk for any length of time; unable to climb, stoop, balance, crouch, kneel, or crawl; unable to push or pull; able to reach, handle and feel occasionally; and unable to move machinery, to work with chemicals, to be exposed to dust, or to be exposed to extreme temperatures. Tr. 871-74.
On June 20, 2000, Dr. Lowry clarified his letter of February 24, 2000. Tr. 896-97. Dr. Lowry reiterated his opinion that Plaintiff is totally and permanently disabled based on both subjective and objective data including exercise tolerance tests, heart catheterization, and an echocardiogram that shows “most of the anterior wall of [Plaintiffs] heart and a substantial region of the inferior wall were permanently damaged.” Tr. 896-97. Dr. Lowry repeated Plaintiffs classification as a Functional Class III Cardiac Impairment (indicating a patient with “marked limitations on physical activity” who experiences symptoms “even with milder forms of physical activity”). Tr. 855, 897. In particular, Dr. Lowry noted Plaintiffs need to take naps regularly. Tr. 897. Dr. Lowry reiterated cardiological assessments “do not translate directly” into the particular elements of Plaintiffs RFC that were the focus of the SSA’s request. Tr. 897. Despite this admission, Dr. Lowry concluded: “I have seen numerous patients in my practice who apparently have obtained such benefits already who appear to me far less disabled than Mr. Feskens.” Tr. 897.
1. ALJ’s Decision.
The ALJ discredited Dr. Lowry’s opinion on four grounds: (1) Dr. Lowry admitted he did not have an objective basis for assessing Plaintiffs RFC, (2) Dr. Lowry did not establish what he meant by “totally sedentary” employment, (3) Dr. Lowry’s assessment occurred three years after his last treatment of Plaintiff, and (4) Dr. Lowry’s medical opinion is undermined by his advocacy for Plaintiff. Tr. 435-36. The ALJ, therefore, gave “moderate weight” to Dr. Lowry’s assessment of Plaintiffs RFC and rejected Dr. Lowry’s opinion that Plaintiff could not engage in any work. Tr. 436.
As with the opinion of Dr. Fitzgerald, the record reveals the opinion of a nonexamining DDS physician is the only medical evidence considered by the ALJ that contradicts Dr. Lowry’s assessment. Tr. 438. As noted, “a treating physician’s opinion must be given controlling weight if it is well-supported and not inconsistent with the other substantial evidence in the record.” Lingenfelter, 504 F.3d at 1038 n. 10. “When a nontreating physician’s opinion contradicts that of the treating physician-but is not based on independent clinical findings, or rests on clinical findings also considered by the treating physician-the opinion of the treating physician may be rejected only if the ALJ gives ‘specific, legitimate reasons for doing so that are based on substantial evidence in the record.’ ” Morgan, 169 F.3d at 600 (quoting Andrews v. Shalala, 53 F.3d 1035, 1041 (9th Cir.1995)). The ALJ must “give weight not only to the treating physician’s clinical findings and interpretation of test results, but also to [their] subjective judgments.” Lester, 81 F.3d at 832-33. The Court notes Plain[1119]*1119tiffs relationship with Dr. Lowry as his treating physician makes Dr. Lowry “especially qualified to evaluate reports from examining doctors, to integrate the medical information they provide, and to form an overall conclusion as to functional capacities and limitations, as well as to prescribe or approve the overall course of treatment.” Id. at 833.
Although Dr. Lowry admits he did not have a precise way to measure Plaintiffs RFC, he clarified in his letter of June 20, 2000, that his assessment is based on both his subjective judgments and Plaintiffs objective medical records. Tr. 896-97. In addition, the opinion of the DDS physician as to Plaintiffs RFC is not based on any objective testing of Plaintiffs physical capability or a physical examination of Plaintiff. In fact, the record does not contain any objective testing of Plaintiffs physical capacity beyond the exercise tolerance tests relied on by Dr. Lowry. Ultimately Dr. Lowry’s reliance on the objective cardiology tests and his opinion of Plaintiffs physical capacity based on his long-term treating relationship with Plaintiff is more persuasive and must be given greater weight than the opinion of a non-examining DDS physician. Tr. 535-42. See Lingenfelter, 504 F.3d at 1038 n. 10.
The ALJ also discredits Dr. Lowry’s opinion on the ground that Dr. Lowry did not clarify what he meant when he restricted Plaintiff to work that is “totally sedentary.” Tr. 435. Yet, as noted, Dr. Lowry set out in detail his assessment of Plaintiffs RFC on the basis of the objective medical evidence and his subjective observations of Plaintiff. Tr. 871-74. For example, Dr. Lowry concluded Plaintiffs impairments render him unable to sit or to stand for a full eight-hour workday due to his severe cardiac impairment, exercise intolerance, fatigue, and a regular need to take naps. Tr. 871-74, 896-97. Although the ALJ criticizes Dr. Lowry’s assessment of Plaintiffs RFC on the ground that it describes “a person who is virtually bedridden,” the Court does not find that argument persuasive. The ALJ vaguely references “other substantial evidence in the record” inconsistent with Dr. Lowry’s assessment, but does not specifically identify any such evidence. Although the ALJ summarizes Plaintiffs activities of daily living elsewhere in his opinion, he does not set out any activities that suggest anything more than an ability to do limited daily activities. Tr. 433. See also Smolen, 80 F.3d at 1284 n. 7 (complete incapacity not required to demonstrate disability); Lester, 81 F.3d at 833 (sporadic ability to do work is not inconsistent with disability). Ultimately the ALJ must assess Plaintiffs ability to sustain employment on a regular and continuing basis. 20 C.F.R. § 404.1520(e).
The ALJ also discredits Dr. Lowry’s opinion on the ground that Dr. Lowry’s opinion in February 2000 was formed three years after Dr. Lowry last treated Plaintiff. That reason alone, however, is not a persuasive basis to reject Dr. Lowry’s opinion. As noted, Dr. Lowry relied on his subjective assessment of Plaintiff as well as objective medical evidence. Tr. 870-74, 896-97. In addition, Dr. Lowry again treated Plaintiff for heart failure in December 2002 and confirmed his opinion that Plaintiffs heart condition is severe and had developed into “advanced heart failure” that might require a heart transplant. Tr. 201-04. In light of the record as a whole, the Court concludes the fact that Dr. Lowry had not treated Plaintiff for three years when he gave his assessment in 2000 that Plaintiff has a severe, permanent heart condition that severely limits his functional capacity is not a basis for discrediting Dr. Lowry’s opinion.
Finally, the ALJ discredits Dr. Lowry’s opinion on the ground that Dr. [1120]*1120Lowry has overstepped the line between care provider and advocate. The ALJ reached this conclusion on the basis of Dr. Lowry’s “willingness to consider the claimant disabled early in his treatment,” which “departs substantially from the objective evidence of record.” Tr. 436. The ALJ, however, does not identify such “objective evidence of record.” The record reflects Dr. Lowry sought consultation with other physicians during Plaintiffs recovery from his heart attack, ordered cardiac catheterization and an echocardiogram, and followed up with exercise tolerance testing. Tr. 604-44. The treatment records also reflect Dr. Lowry concluded Plaintiff may at some point be able to return to work, but ultimately concluded on the basis of the medical tests that Plaintiff could not return to his former work as a security guard and could, at best, perform work that was totally sedentary. Tr. 678-91. The Court does not find any basis in this record to conclude that Dr. Lowry has overstated the nature of Plaintiffs limitations or based his opinion on something other than his professional assessment. Furthermore, the record does not contain any contrary objective medical evidence, and, moreover, Plaintiffs treating physicians each declared Plaintiff disabled due to his heart condition: e.g., Dr. Lowry (Tr. 680-81, 870-74, 896-97); Dr. Fitzgerald (Tr. 235-36, 239-40); Dr. Moreno (Tr. 875-76); Harvey B. Price, M.D. (Tr. 719); and Gregory A. Lackides, M.D. (Tr. 967).
On this record, therefore, the Court concludes the ALJ erred when he failed to provide legally sufficient reasons supported by substantial evidence in the record for discrediting the opinion of Dr. Lowry, Plaintiffs treating cardiologist.
C. Dr. Moreno’s Opinion.
Dr. Moreno treated Plaintiff for nearly two years from 1998 to 2000 for depression, hypertension, and severe coronary artery disease. Tr. 875-76. In the course of his treatment, Dr. Moreno classified the severity of Plaintiffs heart disease as a Functional Class III Cardiac Impairment under the New York Heart Association (NYHA) guidelines. Tr. 855. Class III indicates a patient has “cardiac disease and with marked limitation of physical activity. They are comfortable at rest but experience symptoms with the milder forms of ordinary activity.” Tr. 855. Dr. Moreno also classified Plaintiff as a Therapeutic Class C, which indicates a patient with “cardiac disease whose ordinary physical activity should be moderately restricted and whose more strenuous efforts should be discontinued.” Tr. 855. Dr. Moreno also classified Plaintiffs mental impairments as “Class 4,” which indicates a patient is “unable to engage in stress situations or engage in interpersonal relations (marked limitations).” Tr. 856.
On November 16, 1999, Dr. Moreno issued a letter to the DDS Vocational Rehabilitation Division in which he opined Plaintiffs functional capacity was “essentially normal ... except at his capacity to perform strenuous activities, which are apparently quite limited.” Tr. 848. Dr. Moreno, however, opined: “I do believe his overall ability to be involved in remunerative employment is not very encouraging.” Tr. 848.
On March 14, 2000, Dr. Moreno issued a letter to the SSA in which he declined to fill out an RFC form but repeated his classifications of Plaintiffs capacity based on the NYHA guidelines. Tr. 875-76. Dr. Moreno concluded Plaintiffs “disability is permanent and ... I don’t believe that it is appropriate to recommend vocational counseling and/or training.” Tr. 876.
The ALJ did not clearly set out the weight he gave to Dr. Moreno’s opinion. Tr. 436-37. The ALJ emphasized Dr. Moreno’s statement that Plaintiffs physi[1121]*1121cal RFC was “essentially normal” and noted it contradicts Dr. Moreno’s conclusions. Tr. 437. The ALJ, however, discredited Dr. Moreno’s opinion because: (1) his reliance on the NYHA “Class III” is inaccurate and inconsistent with the record, (2) Dr. Moreno’s opinion of Plaintiffs mental condition is outside his area of expertise, and (3) Dr. Moreno’s ultimate conclusion that Plaintiffs “overall ability to be involved in remunerative employment is not very encouraging” was too vague to be of use.
The ALJ notes a seeming contradiction between Dr. Moreno’s conclusion that Plaintiffs RFC is essentially normal (with the exception of the strenuous activities that Plaintiff cannot perform) and Dr. Moreno’s opinion that Plaintiff is permanently disabled. Tr. 436-37. It is clear from the record, however, that Dr. Moreno’s opinion is based on more than his assessment of Plaintiffs physical abilities and takes into account his lack of stamina, depression, and inability to manage stressful situations. Tr. 848-60. Although the letter of November 16, 1999, could be viewed as internally inconsistent standing alone, Dr. Moreno’s statement that Plaintiffs RFC is “essentially normal” is not inconsistent with his opinion that Plaintiff is disabled when viewed in light of Dr. Moreno’s other records and in light of this record as a whole (particularly the opinions of Drs. Lowry and Fitzgerald). In any event, the Court finds the opinions of Drs. Lowry and Fitzgerald to be most persuasive on the issue of Plaintiffs disability and concludes Dr. Moreno’s opinion is consistent with their opinions.
The ALJ also criticizes Dr. Moreno’s reliance on the NYHA’s Classification System. Tr. 436. The ALJ criticizes the NYHA rating system for only providing for “slight” or “marked” limitations rather than having a class that denotes a “moderate” limitation. Tr. 436. The ALJ, therefore, gives greater weight to Dr. Moreno’s “Therapeutic Classification C” representing Plaintiffs more “moderate” limitations. Tr. 436. Although the ALJ concluded the record does not support “marked” limitations, he does not identify any evidence in the record beyond the opinion of a nonexamining DDS physician to support his conclusion. Tr. 436-37.
The ALJ also asserts Dr. Moreno’s conclusions about Plaintiffs mental-health limitations are not deserving of any weight because those opinions are outside of his area of expertise. Tr. 436-37. The ALJ, however, does not point to any evidence in the record that suggests Dr. Moreno does not treat mental impairments. It is clear from this record that Dr. Moreno was treating Plaintiffs depression, prescribing varying doses of Zoloft and other related medications, and was addressing Plaintiffs’ “emotional, mental, and physical well-being” throughout their relationship. Tr. 848. On this record, the Court does not have any basis to discredit Dr. Moreno’s opinion on this ground.
The ALJ also concludes Dr. Moreno’s opinion that Plaintiffs “overall ability to be involved in remunerative employment is not very encouraging” is too vague to be of use. Tr. 436-37. The Court agrees. When Dr. Moreno’s treatment records and opinion letters are considered as a whole, however, and in light of the entire record, Dr. Moreno’s opinion is consistent with those of Drs. Fitzgerald and Lowry that Plaintiff suffers from severe heart disease that significantly limits his ability to perform even mild physical activity. Thus, the Court does not find this to be a sufficient basis to discredit Dr. Moreno’s opinion.
To the extent the ALJ discredited Dr. Moreno’s opinions on the ground that they are inconsistent, are based on inappropri[1122]*1122ate or unsupported classifications under the NYHA system, or are outside of his area of expertise, the Court concludes the ALJ erred because he did not give legally sufficient reasons supported by substantial evidence in the record for doing so.
Although Plaintiff alleges the ALJ erred in other ways, the Court need not address those arguments in light of its conclusion that the ALJ erred when he discredited Plaintiffs treating physicians.
REMAND
Having found the ALJ erred when he improperly discredited the opinions of Drs. Fitzgerald, Lowry, and Moreno, the Court must determine whether to remand this matter for further proceedings or to remand for calculation of benefits.
The decision whether to remand for further proceedings or for immediate payment of benefits generally turns on the likely utility of further proceedings. Id. at 1179. The court may “direct an award of benefits where the record has been fully developed and where further administrative proceedings would serve no useful purpose.” Smolen, 80 F.3d at 1292.
The Ninth Circuit has established a three-part test “for determining when evidence should be credited and an immediate award of benefits directed.” Harman v. Apfel, 211 F.3d 1172, 1178 (9th Cir.2000). The court should grant an immediate award of benefits when:
(1) the ALJ has failed to provide legally sufficient reasons for rejecting such evidence, (2) there are no outstanding issues that must be resolved before a determination of disability can be made, and (3) it is clear from the record that the ALJ would be required to find the claimant disabled were such evidence credited.
Id. The second and third prongs of the test often merge into a single question: Whether the ALJ would have to award benefits if the case were remanded for further proceedings. Id. at 1178 n. 2.
Because the ALJ did not provide legally sufficient reasons supported by substantial evidence in the record for discrediting the opinions of Drs. Fitzgerald, Lowry, and Moreno, the Court credits those opinions as true. See Benecke v. Barnhart, 379 F.3d 587, 594 (9th Cir.2004)(when “the ALJ fail[s] to provide legally sufficient reasons for rejecting ... [a] physieian[’s] opinion[ ],” the court credits that opinion as true). See also Lester, 81 F.3d at 834 (improperly-rejected physician opinion is credited as a matter of law).
When credited, the medical opinions establish that during the relevant period Plaintiff suffered from severe heart disease, difficult-to-eontrol diabetes, depression, borderline intellectual functioning, peripheral neuropathy, and hypertension that rendered him extremely fatigued to such an extent that he must take regular naps, is significantly limited in the performance of even mild physical activity, and would be required to miss more than one day of work per month. At the hearing before the ALJ on June 15, 2000, the VE attested a claimant who required naps outside of the normal break schedule would not be able to sustain competitive employment in sedentary, unskilled positions. Tr. 313. At the hearing before the ALJ on January 8, 2003, the VE also attested a claimant who missed more than one day of work per month would not be able to sustain competitive employment. Tr. 255. The record, therefore, reflects Plaintiffs impairments render him unable to work on a regular and continuing basis for “8 hours a day, for 5 days a week, or an equivalent schedule.” See SSR 96-8p, at *1.
Accordingly, the Court concludes on this record that Plaintiff cannot sustain work-related physical activities on a regular and [1123]*1123continuing basis and, therefore, was disabled and entitled to benefits for the relevant period. Thus, the Court finds additional proceedings would be futile.
CONCLUSION
For these reasons, the Court REVERSES the decision of the Commissioner and REMANDS this matter pursuant to sentence four of 42 U.S.C. § 405(g) for the immediate calculation and award of benefits.
IT IS SO ORDERED.