(a) Successor mental health care agents.--A principal may appoint one or more successor agents who shall serve in the order named in the mental health power of attorney unless the principal expressly directs to the contrary.
(b) Who may not be appointed mental health care agent.--Unless related to the principal by blood, marriage or adoption, a principal may not appoint any of the following to be the mental health care agent:
(1) The principal's attending physician or other mental health care provider or an employee of the attending physician or other mental health care provider.
(2) An owner, operator or employee of a residential facility in which the principal receives care.