Business and Professions Code § 4992.8

A licensee or registrant shall give written notice to the board of a name change, giving both the old and new names. The written notice shall be submitted to the board within 30 days of the issuance of a new government-issued photographic identification. The licensee or registrant shall certify the information is correct by signing a statement under penalty of perjury. A copy of both of the following documents evidencing the change shall be submitted with the notice:

(a) A current government-issued photographic identification.

(b) The legal document authorizing the name change, such as a court order or a marriage certificate.