Ins. Code, § 10133

(a) Upon written consent of the insured first obtained with respect to a particular claim, any disability insurer shall pay group insurance benefits contingent upon, or for expenses incurred on account of, hospitalization or medical or surgical aid to the person or persons furnishing the hospitalization or medical or surgical aid, or, on and after January 1, 1994, to the person or persons having paid for the hospitalization or medical or surgical aid, but the amount of any such payment shall not exceed the amount of benefit provided by the policy with respect to the service or billing of the provider of aid, and the amount of the payments pursuant to one or more assignments shall not exceed the amount of expenses incurred on account of the hospitalization or medical or surgical aid. Payments so made shall discharge the insurer’s obligation with respect to the amount so paid.

(b) Nothing in this section shall be construed to authorize an insurer to furnish or directly provide services of hospitals, or psychiatric health facilities, as defined in Section 1250.2 of the Health and Safety Code, or physicians and surgeons, or psychologists or in any manner to direct, participate in, or control the selection of the hospital or health facility or physician and surgeon or psychologist from whom the insured secures services or exercise medical or dental or psychological professional judgment, except that an insurer may negotiate and enter into contracts for alternative rates of payment with institutional providers, and offer the benefit of these alternative rates to insureds who select those providers.

(c) Alternatively, insurers may, by agreement with group policyholders, limit payments under a policy to services secured by insureds from institutional providers, and after July 1, 1983, from professional providers, charging alternative rates pursuant to contract with the insurer.

(d) Pursuant to subdivision (c), when alternate rates of payment to providers are applicable to contracts with group policyholders, the contracts shall include programs for the continuous review of the quality of care, performance of medical or psychological personnel included in the plan, utilization of services and facilities, and costs, by professionally recognized unrelated third parties utilizing in the case of professional providers similarly licensed providers for each medical, psychological, or dental service covered under the plan and utilizing in the case of institutional providers appropriate professional providers. All provisions of the laws of the state relating to immunity from liability and discovery privileges for medical, psychological, and dental peer review shall apply to the licensed providers performing the foregoing activities.

(e) On or after July 1, 1983, the amendments made to this section during the 1982 portion of the 1981–82 Regular Session, shall also be applicable with respect to both professional and institutional providers.