(2) If a person licensed to practice under this chapter ceases to practice for a period of 12 or more consecutive months, the board in its discretion may require the person to prove to its satisfaction that the licensee has maintained competence.
(3) The surrender, retirement or other forfeiture, expiration or cancellation of a license issued by the board shall not deprive the board of its authority to institute or continue a disciplinary action against the licensee upon any ground provided by law. [1967 c.470 §25; 1983 c.486 §18; 1989 c.830 §8; 1991 c.485 §4]