California Code, Penal Code - PEN § 3604.3

(a) A physician may attend an execution for the purpose of pronouncing death and may provide advice to the department for the purpose of developing an execution protocol to minimize the risk of pain to the inmate.

(b) The purchase of drugs, medical supplies or medical equipment necessary to carry out an execution shall not be subject to the provisions of Chapter 9 (commencing with Section 4000) of Division 2 of the Business and Professions Code, and any pharmacist, or supplier, compounder, or manufacturer of pharmaceuticals is authorized to dispense drugs and supplies to the secretary or the secretary's designee, without prescription, for carrying out the provisions of this chapter.

(c) No licensing board, department, commission, or accreditation agency that oversees or regulates the practice of health care or certifies or licenses health care professionals may deny or revoke a license or certification, censure, reprimand, suspend, or take any other disciplinary action against any licensed health care professional for any action authorized by this section.