(a) Supervision of physician assistants shall be continuous but shall not be construed as necessarily requiring the physical presence of the supervising physician at the time and place that the services are rendered.
(b) It is the obligation of each team of physicians and physician assistants to ensure that:
(1) The physician assistant's scope of practice is identified;
(2) The delegation of medical task is appropriate to the physician assistant's level of competence;
(3) The relationship and access to the supervising physician is defined; and
(4) A process of evaluation of the physician assistant's performance is established.
(c) The physician assistant and supervising physician may designate back-up physicians who are agreeable to supervise the physician assistant during the absence of the supervising physician.