Cal. Ins. Code § 14074

A notice of such service and a copy of the accusation, together with the notice of defense and statement to respondent, shall forthwith be sent by registered mail by the presiding officer to the licensee at his or her last known address as furnished by the commission. Personal service of such notice, copy of the accusation, notice of defense, and statement to respondent upon the licensee wherever found outside this state shall be the equivalent of such mailing.