OPINION OF THE COURT
Plaintiff-Appellant Joseph Brown appeals the Commissioner of the Social Security Administration’s (“the Commissioner”) denial of his application for supplemental security income (“SSI”). For the following reasons, we will affirm.
FACTUAL BACKGROUND AND PROCEDURAL HISTORY
In March 2006, Joseph Brown, a fifty-one year old man with a history of violent crime and drug abuse, applied for SSI under Title XVI of the Social Security Act, 42 U.S.C. § 1381 et seq. Despite alleging a disability beginning in April 2002 due to bipolar disorder and anxiety, his application was initially denied in October 2006 because his “condition [was] not severe enough to keep [him] from working.” Admin. R. 109. Upon Brown’s request, a hearing was held before an administrative law judge (“ALJ”) in February 2008 (“the hearing”). At the conclusion of the hearing, the ALJ determined that Brown was not disabled because he “has been capable of making a successful adjustment to other work that exists in significant numbers in the national economy.” App. to Br. of Appellant A10. Brown then filed an appeal with the appeals council, but the administrative appeals judge concluded that there was “no reason ... to review the [ALJ’s] decision.” Admin. R. 1.
In May 2009, Brown filed this lawsuit in the United States District Court for the Eastern District of Pennsylvania. In a report and recommendation, the Magistrate Judge concluded that the ALJ’s deei
JURISDICTION AND APPELLATE STANDARD OF REVIEW
The District Court had jurisdiction under 42 U.S.C. § 405(g). We have jurisdiction under 28 U.S.C. § 1291. “[0]ur review of the ALJ’s decision is more deferential as we determine whether there is substantial evidence to support the decision of the Commissioner.”
Knepp v. Apfel,
DISCUSSION
We begin by addressing in some detail the standard of review a district court should apply when reviewing a magistrate judge’s findings in an SSI claim.
A district court may “designate a magistrate judge to conduct hearings, including evidentiary hearings, and to submit to a judge of the court proposed findings of fact and recommendations for the disposition” of certain matters pending before the court. 28 U.S.C. § 636(b)(1)(B). In such cases, “the magistrate judge shall file his proposed findings and recommendations ... with the court and a copy shall forthwith be mailed to all parties.”
Id.
§ 636(b)(1)(C). “Within fourteen days after being served with a copy, any party may serve and file written objections to such proposed findings and recommendations as provided by rules of court.”
Id.
§ 636(b)(1). If a party timely and properly files such a written objection, the District Court
“shall make a de novo determination
of those portions of the report or specified proposed findings or recommendations to which objection is made.”
Id.
(emphasis added). We have provided that § 636(b)(1) requires district courts to review such objections de novo unless the objection is “not timely or not specific.”
Goney v. Clark,
The District Court misapplied that framework to this case. Brown timely filed written objections challenging the sufficiency of the evidence upon which the Magistrate Judge’s findings rested. In considering these objections, the District Court stated that “objections which merely rehash arguments presented to and considered by a magistrate judge are not entitled to de novo review.”
Morgan v.
As
true,
No. 08-2133,
The error, however, was harmless. An error is “harmless” when, despite the technical correctness of an appellant’s legal contention, there is also “no set of facts” upon which the appellant could recover.
Renchenski v. Williams,
I. The ALJ’s Determination
A. The Weight Afforded to Brown’s Treating Psychiatrist’s Opinion
Brown claims that the ALJ’s decision to not adopt the opinion of his treating psychiatrist was not supported by substantial evidence. This claim lacks merit.
The ALJ determined that Brown did not qualify for SSI after finding that he was capable of performing simple, routine work despite his disability. Dr. Richard Cohen, a medical expert who testified at the hearing, concluded that Brown retained the capacity to perform “simple repetitive tasks.” App. to Br. of Appellant A 19. The ALJ explained that Cohen’s conclusion was supported by record evidence from Alex Siegel, Ph.D., a state agency disability consultant, who advised that Brown “is able to meet the basic mental demands of competitive work on a sustained basis despite the limitations resulting from his impairments.” Admin. R. 272;
see
App. to Br. of Appellant A8. Although there was record evidence from a treating psychiatrist suggesting a contrary conclusion,
1
the ALJ is entitled to weigh all evidence in making its finding.
See Kertesz v. Crescent Hills Coal Co.,
B. Brown’s Functional Capacity
Next, Brown contends that the ALJ’s finding as to the credibility of his claimed limitations is not supported by substantial evidence. This claim also lacks merit.
An ALJ must give “subjective complaints ‘serious consideration,’ ... and ma[k]e specific findings of fact, including credibility, as to [a plaintiffs] residual functional capacity.”
Burns v. Barnhart,
CONCLUSION
For the foregoing reasons, any error in the District Court’s articulation of the standard of review was harmless, and the District Court was correct to find that the Commissioner’s determination was supported by substantial evidence. Accordingly, the District Court’s order granting judgment to the defendant will be affirmed.
Notes
. Dr. Jesus Herrera, the treating psychiatrist who saw Brown four times, stated that if Brown were to work, he would miss “12 days to 15 days” of work a month due to his mental impairment.
. Brown argues that an ALJ may not disregard the opinion of a treating physician. The law is clear, however, that the opinion of a treating physician does not bind the ALJ on the issue of functional capacity.
See Adorno v. Shalala,
