The opinion of the court was delivered by: John E. Mcdermott United States Magistrate Judge
MEMORANDUM OPINION AND ORDER AFFIRMING DECISION OF THE COMMISSIONER OF SOCIAL SECURITY PROCEEDINGS
On October 21, 2010, Tammy Sue Mortimore ("Plaintiff" or "Claimant") filed a complaint seeking review of the decision of the Commissioner of Social Security ("Commissioner") denying Plaintiff's application for Social Security Supplemental Security Income ("SSI") benefits. The Commissioner filed an Answer on April 15, 2011. On June 16, 2011, the parties filed a Joint Stipulation ("JS"). The matter is now ready for decision.
Pursuant to 28 U.S.C. § 636(c), both parties consented to proceed before this Magistrate Judge. After reviewing the pleadings, transcripts, and administrative record ("AR"), the Court concludes that the Commissioner's decision should be affirmed and this case dismissed with prejudice.
Plaintiff is a 42 year old female who is alleging disability beginning August 1, 2006. (AR 7.) Plaintiff's SSI claim was denied initially on October 27, 2008, and on reconsideration on March 2, 2009. (AR 7.) She filed a timely request for hearing, which was held before Administrative Law Judge ("ALJ") Mason Harrell, Jr. on April 20, 2010, in San Bernardino, California. (AR 7.) Claimant appeared and testified. (AR 7.) Medical expert Samuel Landau and vocational expert ("VE") Corinne Porter also testified. (AR 7.) Claimant's sister, Melinda Wilkerson, also was present. (AR 7.) Claimant was represented by counsel. (AR 7.)
The ALJ issued an unfavorable decision on May 20, 2010. (AR 7-14.) The Appeals Council denied review on September 20, 2010. (AR 1-3.)
As reflected in the Joint Stipulation, Plaintiff raises the following disputed issues as grounds for reversal and remand:
1. Whether the ALJ properly evaluated the lay witness testimony.
2. Whether the ALJ properly assessed Plaintiff's credibility. STANDARD OF REVIEW
Under 42 U.S.C. § 405(g), this Court reviews the ALJ's decision to determine whether the ALJ's findings are supported by substantial evidence and free of legal error. Smolen v. Chater, 80 F.3d 1273, 1279 (9th Cir. 1996); see also DeLorme v. Sullivan, 924 F.2d 841, 846 (9th Cir. 1991) (ALJ's disability determination must be supported by substantial evidence and based on the proper legal standards).
Substantial evidence means "'more than a mere scintilla' . . . but less than a preponderance." Saelee v. Chater, 94 F.3d 520, 521-22 (9th Cir. 1996) (quoting Richardson v. Perales, 402 U.S. 389, 401 (1971)). Substantial evidence is "such relevant evidence as a reasonable mind might accept as adequate to support a conclusion." Richardson, 402 U.S. at 401 (internal quotations and citation omitted).
This Court must review the record as a whole and consider adverse as well as supporting evidence. Robbins v. Soc. Sec. Admin., 466 F.3d 880, 882 (9th Cir. 2006). Where evidence is susceptible to more than one rational interpretation, the ALJ's decision must be upheld. Morgan v. Comm'r, 169 F.3d 595, 599 (9th Cir. 1999). "However, a reviewing court must consider the entire record as a whole and may not affirm simply by isolating a 'specific quantum of supporting evidence.'" Robbins, 466 F.3d at 882 (quoting Hammock v. Bowen, 879 F.2d 498, 501 (9th Cir. 1989)); see also Orn v. Astrue, 495 F.3d 625, 630 (9th Cir. 2007).
The Social Security Act defines disability as the "inability to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or . . . can be expected to last for a continuous period of not less than 12 months." 42 U.S.C. §§ 423(d)(1)(A), 1382c(a)(3)(A). The Commissioner has established a five-step sequential process to determine whether a claimant is disabled.
20 C.F.R. §§ 404.1520, 416.920.
The first step is to determine whether the claimant is presently engaging in substantial gainful activity. Parra v. Astrue, 481 F.3d 742, 746 (9th Cir. 2007). If the claimant is engaging in substantial gainful activity, disability benefits will be denied. Bowen v. Yuckert, 482 U.S. 137, 140 (1987). Second, the ALJ must determine whether the claimant has a severe impairment or combination of impairments. Parra, 481 F.3d at 746. An impairment is not severe if it does not significantly limit the claimant's ability to work. Smolen v. Chater, 80 F.3d 1273, 1290 (9th Cir. 1996). Third, the ALJ must determine whether the impairment is listed, or equivalent to an impairment listed, in 20 C.F.R. Pt. 404, Subpt. P, Appendix I of the regulations. Parra, 481 F.3d at 746. If the impediment meets or equals one of the listed impairments, the claimant is presumptively disabled. Bowen v. Yuckert, 482 U.S. at 141. Fourth, the ALJ must determine whether the impairment prevents the claimant from doing past relevant work. Pinto v. Massanari, 249 F.3d 840, 844-45 (9th Cir. 2001).
Before making the step four determination, the ALJ first must determine the claimant's residual functional capacity ("RFC").*fn1 20 C.F.R. § 416.920(e). The RFC must consider all of the claimant's impairments, including those that are not severe. 20 C.F.R. §§ 416.920(e), 416.945(a)(2); Social Security Ruling ("SSR") 96-8p. If the claimant cannot perform his or her past relevant work or has no past relevant work, the ALJ proceeds to the fifth step and must determine whether the impairment prevents the claimant from performing any other substantial gainful activity. Moore v. Apfel, 216 F.3d 864, 869 (9th Cir. 2000).
The claimant bears the burden of proving steps one through four, consistent with the general rule that at all times the burden is on the claimant to establish his or her entitlement to benefits. Parra, 481 F.3d at 746. Once this prima facie case is established by the claimant, the burden shifts to the Commissioner to show that the claimant may perform other gainful activity. Lounsburry v. Barnhart, 468 F.3d 1111, 1114 (9th Cir. 2006). To support a finding that a claimant is not disabled at step five, the Commissioner must provide evidence demonstrating that other work exists in significant numbers in the national economy that the claimant can do, given his or her RFC, ...