Cal. LAB § 5307.12

(a) If a health care provider or health facility, licensed pursuant to Section 1250 of the Health and Safety Code, and an entity that provides physician network services, as defined in subdivision (b) of Section 4616.5, or an entity that provides ancillary network services, as defined in subdivision (c) of Section 4616.5, contract for a reimbursement rate that is more than 20 percent below the official medical fee schedule, excluding goods and pharmaceuticals, the entity that provides physician or ancillary network services shall provide the payor with a written disclosure, on a form promulgated by the administrative director, of the reimbursement amount paid to the provider.

(b) Before providing the disclosure required pursuant to subdivision (a), the entity that provides physician or ancillary network services may require the payor to sign a nondisclosure agreement with the entity that provides physician or ancillary network services agreeing to maintain the confidentiality of the disclosed information.

(c) A nondisclosure agreement signed pursuant to subdivision (b) shall not prohibit the division from obtaining the information disclosed pursuant to subdivision (a). This subdivision is declaratory of existing law.

(d) This section does not apply to an entity that provides physician or ancillary network services that discloses, or arranges for the disclosure of, the same pricing and payment information to both the health care provider or health facility and the person or entity paying for the services.

(e) This section shall become operative on July 1, 2021.