The term Physician Extender can include a Radiologist Assistant (RA), a Physician Assistant (PA), or a Nurse Practitioner (NP). The rules for use of these Non-Physician Providers (NPP) are different for each one and they vary from state to state according to their licensure laws. In some cases, the practice may bill and be reimbursed separately for the services of a NPP. Understanding the differences is key to getting started with physician extenders.
