Cal. Bus. & Prof. Code § 4996.75

(a) A licensee or registrant shall provide a client with a notice written in at least 12-point type prior to initiating psychotherapy services, or as soon as practicably possible thereafter, that reads as follows:
NOTICE TO CLIENTS
The Board of Behavioral Sciences receives and responds to complaints regarding services provided within the scope of practice of clinical social workers. You may contact the board online at www.bbs.ca.gov, or by calling (916) 574-7830.
(b) On and after July 1, 2025, upon initiation of psychotherapy services with a client, the notice described in subdivision (a) shall also include the licensee’s or registrant’s full name as filed with the board, the license or registration number, the type of license or registration, and the license or registration expiration date.
(c) Delivery of the notice required by this section to the client shall be documented.