The following excerpt is from Lim v. Astrue, No. 2:10-CV-00958-KJN (TEMP) (E.D. Cal. 2011):
The medical opinions of three types of medical sources are recognized in social security cases: "(1) those who treat the claimant (treating physicians); (2) those who examine but do not treat the claimant (examining physicians); and (3) those who neither examine nor treat the claimant (nonexamining physicians)." Lester v. Chater, 81 F.3d 821, 830 (9th Cir. 1995).
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