Cal. Bus. & Prof. Code § 3502.3
(a)
(1) A practice agreement shall include provisions that address the following:
(2) A practice agreement shall be signed by both of the following:
(b) Notwithstanding any other law, in addition to any other practices that meet the general criteria set forth in this chapter or regulations adopted by the board or the Medical Board of California, a practice agreement may authorize a PA to do any of the following: