Evid. Code, § 1157

(a) Neither the proceedings nor the records of organized committees of medical, medical-dental, podiatric, registered dietitian, psychological, marriage and family therapist, licensed clinical social worker, professional clinical counselor, pharmacist, prehospital emergency medical care person or personnel, or veterinary staffs, or of a peer review body, as defined in Section 805 of the Business and Professions Code, having the responsibility of evaluation and improvement of the quality of care rendered in the hospital, or for that peer review body, or medical or dental review or dental hygienist review or chiropractic review or podiatric review or registered dietitian review or pharmacist review or veterinary review or acupuncturist review or licensed midwife review or prehospital emergency medical care person or personnel review committees of local medical, dental, dental hygienist, podiatric, dietetic, pharmacist, veterinary, acupuncture, chiropractic, or prehospital emergency medical care person or personnel societies, marriage and family therapist, licensed clinical social worker, professional clinical counselor, or psychological review committees of state or local marriage and family therapist, state or local licensed clinical social worker, state or local licensed professional clinical counselor, or state or local psychological associations or societies or licensed midwife associations or societies having the responsibility of evaluation and improvement of the quality of care, shall be subject to discovery.

(b) Except as hereinafter provided, a person in attendance at a meeting of any of the committees described in subdivision (a) shall not be required to testify as to what transpired at that meeting.

(c) The prohibition relating to discovery or testimony does not apply to the statements made by a person in attendance at a meeting of any of the committees described in subdivision (a) if that person is a party to an action or proceeding the subject matter of which was reviewed at that meeting, to a person requesting hospital staff privileges, or in an action against an insurance carrier alleging bad faith by the carrier in refusing to accept a settlement offer within the policy limits.

(d) The prohibitions in this section do not apply to medical, dental, dental hygienist, podiatric, dietetic, psychological, marriage and family therapist, licensed clinical social worker, professional clinical counselor, pharmacist, veterinary, acupuncture, midwifery, chiropractic, or prehospital emergency medical care person or personnel society committees that exceed 10 percent of the membership of the society, nor to any of those committees if a person serves upon the committee when his or her own conduct or practice is being reviewed.

(e) The amendments made to this section by Chapter 1081 of the Statutes of 1983, or at the 1985 portion of the 1985–86 Regular Session of the Legislature, at the 1990 portion of the 1989–90 Regular Session of the Legislature, at the 2000 portion of the 1999–2000 Regular Session of the Legislature, at the 2011 portion of the 2011–12 Regular Session of the Legislature, at the 2015 portion of the 2015–16 Regular Session of the Legislature, or at the 2024 portion of the 2023–24 Regular Session of the Legislature, do not exclude the discovery or use of relevant evidence in a criminal action.

(f) For purposes of this section, “prehospital emergency medical care person or personnel” has the same meaning as defined in paragraph (1) of subdivision (a) of Section 1797.188 of the Health and Safety Code.