CMS finalized, for Calendar Year (CY) 2020, the Physician Supervision for Physician Assistant (PA) Services proposal related to PAs services. Accordingly, 42 Code of Federal Regulations (CFR) 410.74 (a)(2) requires that PAs must provide their professional services in accordance with State laws and scope of practice rules for PAs in the State in which the services are provided, to the extent that those rules describe the required relationship between physicians and PAs, including its collaborative nature, and the form of supervision for Medicare’s purposes.