Cal. Bus. & Prof. Code § 109

(a) The decisions of any of the boards comprising the department with respect to setting standards, conducting examinations, passing candidates, and revoking licenses, are not subject to review by the director, but are final within the limits provided by this code which are applicable to the particular board, except as provided in this section.
(b) The director may initiate an investigation of any allegations of misconduct in the preparation, administration, or scoring of an examination which is administered by a board, or in the review of qualifications which are a part of the licensing process of any board. A request for investigation shall be made by the director to the Division of Investigation through the chief of the division or to any law enforcement agency in the jurisdiction where the alleged misconduct occurred.
(c) The director may intervene in any matter of any board where an investigation by the Division of Investigation discloses probable cause to believe that the conduct or activity of a board, or its members or employees constitutes a violation of criminal law.
The term “intervene,” as used in paragraph (c) of this section may include, but is not limited to, an application for a restraining order or injunctive relief as specified in Section 123.5, or a referral or request for criminal prosecution. For purposes of this section, the director shall be deemed to have standing under Section 123.5 and shall seek representation of the Attorney General, or other appropriate counsel in the event of a conflict in pursuing that action.