Cal. Business and Professions Code § 4990.20

(a) The board may adopt rules and regulations as necessary to administer and enforce the provisions of this chapter and the other chapters it administers and enforces. The adoption, amendment, or repeal of those rules and regulations shall be made in accordance with Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code. (b) The board may formulate and enforce rules and regulations requiring the following: (1) That the articles of incorporation or bylaws of a marriage and family therapist corporation, a licensed clinical social worker corporation, or a professional clinical counselor corporation include a provision whereby the capital stock of that corporation owned by a disqualified person, as defined in the Moscone-Knox Professional Corporation Act (Part 4 (commencing with Section 13400) of Division 3 of Title 1 of the Corporations Code), or a deceased person shall be sold to the corporation or to the remaining shareholders of that corporation within the time that the rules and regulations may provide. (2) That a marriage and family therapist corporation, a licensed clinical social worker corporation, or a professional clinical counselor corporation shall provide adequate security by insurance or otherwise for claims against it by its patients arising out of the rendering of professional services.