CFR › Title 42 › Part 493 › §493.136342 CFR §493.1363Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkEach 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 § 493.2.(2)Be a midlevel practitioner, as defined in § 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 § 493.2 of this part.