If a licensing agency determines that its licentiate's ability to practice his or her profession safely is impaired because the licentiate is mentally ill, or physically ill affecting competency, the licensing agency may take action by any one of the following methods:
The licensing agency shall not reinstate a revoked or suspended certificate or license until it has received competent evidence of the absence or control of the condition which caused its action and until it is satisfied that with due regard for the public health and safety the person's right to practice his or her profession may be safely reinstated.
Ca. Bus. and Prof'l. Code § 822