Cal. GOV § 7926.205

(a) Nothing in this division or any other provision of law requires disclosure of records of a health plan that is licensed pursuant to the Knox-Keene Health Care Service Plan Act of 1975 (Chapter 2.2 (commencing with Section 1340) of Division 2 of the Health and Safety Code) and that is governed by a county board of supervisors, whether paper records, records maintained in the management information system, or records in any other form, that relate to provider rate or payment determinations, allocation or distribution methodologies for provider payments, formulae or calculations for these payments, and contract negotiations with providers of health care for alternative rates for a period of three years after the contract is fully executed.

(b) Transmission of the records described in subdivision (a), or the information contained therein in an alternative form, to the board of supervisors is not a waiver of exemption from disclosure. The records and information once transmitted to the board of supervisors remain subject to the exemption described in subdivision (a).

(c) (1) This section does not prevent the Joint Legislative Audit Committee from accessing any records in the exercise of its powers pursuant to Article 1 (commencing with Section 10500) of Chapter 4 of Part 2 of Division 2 of Title 2.

(2) This section does not prevent the Department of Managed Health Care from accessing any records in the exercise of its powers pursuant to Article 1 (commencing with Section 1340) of Chapter 2.2 of Division 2 of the Health and Safety Code.