The opinion of the court was delivered by: Craig M. Kellison United States Magistrate Judge
MEMORANDUM OPINION AND ORDER
Plaintiff, who is proceeding with retained counsel, brings this action for judicial review of a final decision of the Commissioner of Social Security under 42 U.S.C. § 405(g). Pursuant to the written consent of all parties, this case is before the undersigned as the presiding judge for all purposes, including entry of final judgment. See 28 U.S.C. § 636(c). Pending before the court are plaintiff's motion for summary judgment (Doc. 16) and defendant's cross-motion for summary judgment (Doc. 21).
Plaintiff applied for social security benefits on March 7, 2007. In the application, plaintiff claims that disability began on June 1, 2006. Plaintiff's claim was initially denied. Following denial of reconsideration, plaintiff requested an administrative hearing, which was held on August 18, 2008, before Administrative Law Judge ("ALJ") Sandra K. Rogers. In a February 17, 2009, decision, the ALJ concluded that plaintiff is not disabled based on the following relevant findings:
1. The claimant has the following severe impairments: osteoarthritis of the left ankle and left knee; chronic right shoulder pain;
2. The claimant does not have an impairment or combination of impairments that meets or medically equals an impairment listed in the regulations;
3. The claimant has the residual functional capacity to perform unskilled sedentary exertional work with no overhead reaching with the right upper extremity; and
4. Considering the claimant's age, education, work experience, residual functional capacity, and vocational expert testimony, jobs exist in significant numbers in the national economy that plaintiff can perform.
After the Appeals Council declined review on December 20, 2010, this appeal followed.
The court reviews the Commissioner's final decision to determine whether it is:
(1) based on proper legal standards; and (2) supported by substantial evidence in the record as a whole. See Tackett v. Apfel, 180 F.3d 1094, 1097 (9th Cir. 1999). "Substantial evidence" is more than a mere scintilla, but less than a preponderance. See Saelee v. Chater, 94 F.3d 520, 521 (9th Cir. 1996). It is ". . . such evidence as a reasonable mind might accept as adequate to support a conclusion." Richardson v. Perales, 402 U.S. 389, 402 (1971). The record as a whole, including both the evidence that supports and detracts from the Commissioner's conclusion, must be considered and weighed. See Howard v. Heckler, 782 F.2d 1484, 1487 (9th Cir. 1986); Jones v. Heckler, 760 F.2d 993, 995 (9th Cir. 1985). The court may not affirm the Commissioner's decision simply by isolating a specific quantum of supporting evidence. See Hammock v. Bowen, 879 F.2d 498, 501 (9th Cir. 1989). If substantial evidence supports the administrative findings, or if there is conflicting evidence supporting a particular finding, the finding of the Commissioner is conclusive. See Sprague v. Bowen, 812 F.2d 1226, 1229-30 (9th Cir. 1987). Therefore, where the evidence is susceptible to more than one rational interpretation, one of which supports the Commissioner's decision, the decision must be affirmed, see Thomas v. Barnhart, 278 F.3d 947, 954 (9th Cir. 2002), and may be set aside only if an improper legal standard was applied in weighing the evidence, see Burkhart v. Bowen, 856 F.2d 1335, 1338 (9th Cir. 1988).
In his motion for summary judgment, plaintiff argues: (1) the ALJ erred at step two in failing to find plaintiff's mental impairment to be severe; (2) the ALJ erred by rejecting lay witness testimony without providing germane reasons for doing so; (3) the ALJ erred by failing to provide clear ...