Mackenzie B. v. Commissioner Social Security Administration

District Court, D. Oregon·Decided June 8, 2026·No. 3:25-cv-01088·Unknown

Opinion

IN THE UNITED STATES DISTRICT COURT

FOR THE DISTRICT OF OREGON

MACKENZIE B.,1 Case No. 3:25-cv-01088-SB

Plaintiff, OPINION AND ORDER

v.

COMMISSIONER SOCIAL SECURITY ADMINISTRATION,

Defendant.

BECKERMAN, U.S. Magistrate Judge. Mackenzie B. (“Plaintiff”) filed this appeal challenging the Commissioner of Social Security’s (“Commissioner”) denial of her application for Supplemental Security Income (“SSI”) under Title XVI of the Social Security Act. The Court has jurisdiction over this matter pursuant to 42 U.S.C. §§ 405(g) and 1383(c)(3). For the reasons explained below, the Court affirms the Commissioner’s decision because it is free of harmful legal error and supported by substantial evidence.

1 In the interest of privacy, this opinion uses only the first name and the initial of the last name of the non-governmental party. STANDARD OF REVIEW “As with other agency decisions, federal court review of social security determinations is limited.” Treichler v. Comm’r of Soc. Sec. Admin., 775 F.3d 1090, 1098 (9th Cir. 2014). A federal court’s review is limited because “[f]or highly fact-intensive individualized determinations like a claimant’s entitlement to disability benefits, Congress places a premium upon agency expertise,

and, for the sake of uniformity, it is usually better to minimize the opportunity for reviewing courts to substitute their discretion for that of the agency.” Id. (quoting Consolo v. Fed. Mar. Comm’n, 383 U.S. 607, 621 (1966)). Adhering to this principle, courts “follow three important rules” in reviewing social security determinations. Brown-Hunter v. Colvin, 806 F.3d 487, 492 (9th Cir. 2015). First, courts “leave it to the [agency] to determine credibility, resolve conflicts in the testimony, and resolve ambiguities in the record.” Id. (quoting Treichler, 775 F.3d at 1098). Second, courts “will ‘disturb the Commissioner’s decision to deny benefits only if it is not supported by substantial evidence or is based on legal error.’” Id. (quoting Treichler, 775 F.3d at 1098). Third, if the agency “‘commits legal error, [courts] uphold the decision where that error is

harmless,’ meaning that ‘it is inconsequential to the ultimate nondisability determination,’ or that, despite the legal error, ‘the agency’s path may reasonably be discerned, even if the agency explains its decision with less than ideal clarity.’” Id. (quoting Treichler, 775 F.3d at 1098); see also Smith v. Kijakazi, 14 F.4th 1108, 1111 (9th Cir. 2021) (“And even where this modest [substantial evidence] burden is not met, [courts] will not reverse an [agency] decision where the error was harmless.” (citing Molina v. Astrue, 674 F.3d 1104, 1111 (9th Cir. 2012), superseded on other grounds by regulation as recognized in Farlow v. Kijakazi, 53 F.4th 485, 487 (9th Cir. 2022))). /// BACKGROUND I. PLAINTIFF’S APPLICATION Plaintiff was born in March 1996, making her twenty-six years old on April 20, 2022, the day that she filed her SSI application and her amended alleged disability onset date.2 (Tr. 40, 111, 168, 178.) Plaintiff is a college graduate who has no past relevant work experience. (Id. at 40, 115, 117, 325.) In her application, Plaintiff alleges disability due primarily to Ehlers-Danlos

syndrome,3 back and joint pain, gastrointestinal issues, anxiety, and depression. (Id. at 112-14, 168, 178.) The Commissioner denied Plaintiff’s application initially and upon reconsideration, and on January 3, 2024, Plaintiff requested a hearing before an Administrative Law Judge (“ALJ”). (Id. at 21.) On June 13, 2024, Plaintiff and an impartial vocational expert (“VE”) appeared and testified at an administrative hearing held before an ALJ. (Id. at 110-34.) On July 24, 2024, the ALJ issued a written decision denying Plaintiff’s application. (Id. at 21-41.) On April 30, 2025, the Appeals Council denied Plaintiff’s request for review, making the ALJ’s written decision the final decision of the Commissioner. (Id. at 1-6.) Plaintiff now seeks judicial review of that

decision.

2 Although a claimant’s “complete medical history (i.e., records of a claimant’s medical sources covering at least the [twelve] months preceding the month in which an application is filed) must be considered for purposes of his application, . . . SSI benefits are not payable prior to the month following the month in which the application was filed[.]” Pineda v. Comm’r of Soc. Sec., No. 1:22-cv-01287-SAB, 2023 WL 5334984, at *1 n.3 (E.D. Cal. Aug. 18, 2023) (citing 20 C.F.R. §§ 416.335, 416.912). Thus, in evaluating an SSI application, an ALJ’s disability determination turns on whether the claimant was disabled “as of the date the application was filed.” Id. 3 Ehlers-Danlos Syndrome is a “rare genetic condition typified by joint instability and chronic musculoskeletal pain.” Allen v. Berryhill, No. 3:16-cv-02067-SB, 2017 WL 5297945, at *1 (D. Or. Nov. 13, 2017) (quoting Wong v. Minn. Dep’t of Hum. Servs., 820 F.3d 922, 926 (8th Cir. 2016)). II. THE SEQUENTIAL PROCESS A claimant is considered disabled if he or she is unable 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 [twelve] months[.]” 42 U.S.C. § 423(d)(1)(A). “Social Security Regulations set out a five-step sequential

process for determining whether an applicant is disabled within the meaning of the Social Security Act.” Keyser v. Comm’r Soc. Sec. Admin., 648 F.3d 721, 724 (9th Cir. 2011). Those five steps are: (1) whether the claimant is engaged in substantial gainful activity; (2) whether the claimant has a severe impairment; (3) whether the impairment meets or equals a listed impairment; (4) whether the claimant can return to any past relevant work; and (5) whether the claimant can perform other work that exists in significant numbers in the national economy. Id. at 724-25. To establish a “prima facie case of a disability,” a claimant must demonstrate “at steps one through four of the sequential evaluation process that she suffers from a severe impairment that prevents her from doing any work she has done in the past, or that she has a severe

impairment and has no relevant past work[.]” White v. Kjakazi, 44 F.4th 828, 833 (9th Cir. 2022) (citing Tackett v. Apfel, 180 F.3d 1094, 1098 (9th Cir. 1999)). If the claimant does so, “[t]he burden then shifts to the Commissioner at step five to establish that the claimant can perform a ‘significant number[]’ of jobs in the national economy given the claimant’s physical and mental limitations, age, education, and work experience.” Id. (first quoting 20 C.F.R. § 416.960(c)(2); and then citing Thomas v.

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