Cal. Business and Professions Code § 3521.3

(a) The board may establish, by regulation, a system for the placement of a license on a retired status, upon application, for a physician assistant who is not actively engaged in practice as a physician assistant or any activity that requires them to be licensed by the board. (b) No licensee with a license on a retired status shall engage in any activity for which a license is required. (c) The board shall deny an applicant’s application for a retired status license if the license is canceled or if the license is suspended, revoked, or otherwise punitively restricted by the board or subject to disciplinary action under this chapter. (d) Beginning one year from the effective date of the regulations adopted pursuant to subdivision (a), if an applicant’s license is delinquent, the board shall deny an applicant’s application for a retired status license. (e) The board shall establish minimum qualifications for a retired status license. (f) The board may exempt the holder of a retired status license from the renewal requirements described in Section 3524.5. (g) The board shall establish minimum qualifications for the restoration of a license in a retired status to an active status. These minimum qualifications shall include, but are not limited to, continuing education and payment of a fee as provided in subdivision (c) of Section 3521.1.