The board may reinstate a suspended, revoked, expired, or surrendered certificate, registration, or permit or suspended, revoked, expired, or surrendered practice privileges upon petition of the person or firm holding or formerly holding the registration, permit, or certificate, or practice privileges. The board may, in its sole discretion, require that the person or firm submit to the board evidence of having obtained up to 120 hours of continuing professional education credits that would have been required had the person or firm held a registration, certificate, permit, or practice privileges continuously. The board may, in its sole discretion, place any other conditions upon reinstatement of a suspended, revoked, expired, or surrendered certificate, permit, registration, or of practice privileges that it finds appropriate and necessary to ensure that the purposes of this chapter are met. No suspended certificate, registration, permit, or practice privileges may be reinstated until the former holder, or person with practice privileges has completed one-half of the suspension.