Cal. LAB § 2750.6

There is a rebuttable presumption affecting the burden of proof that a physician and surgeon, licensed pursuant to Division 2 (commencing with Section 500) of the Business and Professions Code, who enters into a contract for the performance of health services on behalf of a licensed primary care clinic, as defined in paragraph (1) of subdivision (a) of Section 1204 of the Health and Safety Code, is an independent contractor rather than an employee. Nothing in this section shall authorize the employment of a physician and surgeon to provide professional services when the employment would violate any other provision of law.