02-383-3 Me. Code R. § 7
If a physician or group of physicians employs a physician extender, the physician extender must be provided supervision by a primary or secondary supervising physician. Liability under these rules for me physician extender's medical activities shall remain that of the supervising physician, including when the physician extender provides care and treatment for patients in an organized health care delivery system facility.
If a physician extender is employed by or is it principal in an organized health care delivery system facility, nothing in these: rules shall be construed to limit the liability of the organized health care delivery system for the physician extender's actions or omissions. Physician extenders employed by or a principal in such facilities must still be provided supervision by the primary supervising physician, who is not an employee of the physician assistant.
02-383 C.M.R. ch. 3, § 7