Question: If a nurse practitioner (NP) or physician assistant (PA) performs a diagnostic test, as long as it is within his scope of practice, am I correct that there are no supervision requirements? Maine Subscriber Beware: Keep in mind that the supervision requirements for nonphysician ancillary personnel performing diagnostic tests are different from those for incident-to services. Diagnostic tests require general supervision, while incident-to services require direct physician supervision.
Answer: An NP or PA may perform diagnostic tests as long as he follows the state scope-of-practice laws and the applicable state requirements for physician supervision or collaboration. Beyond that, the Medicare supervision rules that otherwise apply to nonphysician ancillary personnel do not apply to NPs and PAs when they personally perform diagnostic tests as listed in the Balanced Budget Act of 1997.