Medical professionalism as a concept can be traced back at least to around 400 bc with the Hippocratic Oath. The words of that oath (or a similar oath) are taken by virtually every physician at graduation from medical school, and the modern concepts included vary greatly from the original, somewhat quaint edicts.1 However quaint the original oath, it is arguably the earliest description of expected physician behavior, at least at that time. Currently, most individuals associate the Hippocratic Oath with the basics of medical professionalism.
DeAngelis CD. Medical Professionalism. JAMA. 2015;313(18):1837-1838. doi:10.1001/jama.2015.3597