Botox injected by a physician or other medical professional

The answer is that it depends on what area of the country you are in. Different states have different regulations on what procedures a physician, nurse, or medical assistant can perform.  In Ohio, for example, only a physician can inject Botox while in other parts of the country nurses may be allowed. For me and my family, I would only have a physician perform any facial injection, whether Botox, Dysport, Restylane, Juvederm, Sculptra, etc. I also would make sure that that physician was trained and board certified in one of the four "core" specialties as defined by Allergan (the maker of Botox) for injections of this type. Those specialties are plastic surgery, dermatology, facial plastic surgery and oculoplastic surgery. That way you can be confident that your physician injector is well trained in the relevant anatomy of the face and the mechanism of action of whatever they are injecting.