What it means to be a medical professional has been defined by medical ethicists throughout history and remains a contemporary concern addressed by this paper. A medical professional is generally considered to be one who makes a public promise to fulfill the ethical obligations expressed in the Hippocratic Code. This presentation summarizes the history of medical professionalism and refocuses attention on the interpersonal relationship of doctor and patient. This keynote address was delivered at the Founders of Bioethics International Congress (June, 2010).