Overview: Responsible for providing a variety of patient care activities under the supervision of a physician, physician extender, or registered nurse in accordance with established guidelines and standards. Duty assignments vary and include, but are not limited to front office and back office functions. Responsibilities: Responsible for providing a variety of patient care activities under the supervision of a physician, physician extender, or registered nurse in accordance with established guidelines and standards. Duty assignments vary and include, but are not limited to front office and back office functions.