An individual must hold an active license issued by the Board in order to practice medicine or surgery or a branch of medicine or surgery or claim to be legally licensed to practice medicine or surgery or a branch of medicine or surgery within the State by diagnosing, relieving in any degree or curing, or professing or attempting to diagnose, relieve or cure a human disease, ailment, defect or complaint, whether physical or mental, or of physical and mental origin, by attendance or by advice, or by prescribing or furnishing a drug, medicine, appliance, manipulation, method or a therapeutic agent whatsoever or in any other manner.
02-373 C.M.R. ch. 1, § 2