The law varies from state to state on who CAN physically inject fillers, be it an aesthetician, RN or a physician. As a result there are many salons where a MD "director" is supposedly supervising the salons injectors as they inject fillers, Botox and apply lasers to people's faces. This is quite common and generates billions of dollars to Allergan, Medicis, salon owners and these doctors. Personally,
But that was not your question. To paraphrase you, you asked who SHOULD be injecting Radiesse. If you want the best possible result I would research your doctor and go ONLY to a Plastic surgeon or Cosmetic Dermatologist who PERSONALLY did his own filler injections. You may pay more but you will assure yourself of the most educated and capable treatment.
Good Luck.
Peter A Aldea, MD