California Code, Health and Safety Code - HSC § 11834.28

(a) No sooner than July 1, 2022, an alcohol or other drug recovery or treatment facility shall either offer medications for addiction treatment (MAT) directly to clients, or have an effective referral process in place with narcotic treatment programs, community health centers, or other MAT providers.

(b) An effective referral process shall include an established relationship with a MAT provider and transportation to appointments for MAT. Providing contact information for a MAT provider does not meet the requirement of an effective referral.

(c) An alcohol or other drug recovery or treatment facility shall implement and maintain a MAT policy approved by the department. The MAT policy shall do all of the following:

(d) Notwithstanding Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code, the department may implement, interpret, or make specific this section through the use of all-county letters, provider bulletins, or similar instructions, without taking any further regulatory action.