California Code, Business and Professions Code - BPC § 5115

(a) A person whose license has been revoked or surrendered may petition the board for reinstatement or reduction of penalty after a period of not less than one year has elapsed from the effective date of the decision or from the date of the denial of a similar petition, unless a longer period, not to exceed three years, is specified by the board in any decision revoking the license, accepting the surrender of the license, or denying reinstatement of the license.

(b) A person whose license has not been revoked or surrendered but who has been disciplined by imposition of a suspension or otherwise disciplined may petition the board for reinstatement or reduction of penalty after a period of not less than one year has elapsed from the effective date of the decision.

(c) The board shall give notice to the Attorney General of the filing of the petition and the Attorney General and the petitioner shall be afforded an opportunity to present either oral or written argument before the board itself. The board itself shall rule on the petition, and the decision shall include the reasons therefor and any terms and conditions that the board reasonably deems appropriate to impose as a condition of reinstatement or reduction of penalty, including, but not limited to, restrictions on the petitioner's scope of professional practice.