Each individual performing PPM procedures must--
(a) Possess a current license issued by the State in which the laboratory is located if the licensing is required; and
(b) Meet one of the following requirements:
(1) Be a physician, as defined in Sec. 493.2.
(2) Be a midlevel practitioner, as defined in Sec. 493.2, under the supervision of a physician or in independent practice if authorized by the State in which the laboratory is located.
(3) Be a dentist as defined in Sec. 493.2 of this part.