I will also accept a salon if you prefer more specialised hair care while you're being operated on without anaesthetic. It can be a tooth extraction, a trepanation, bleeding into a bucket until you're cured of an illness, or someone who has legally never seen the inside of a body- even a drawing- fishing around in your guts for a possessed organ with their unwashed fingers. Your antibiotics can consist of wine and bread.
In Britain, Urologists for example still use the title Mr./Ms. instead of Dr. because their profession was traditionally reserved for barber surgeons, not taught by medical schools. They actually view the title as more prestigious than Doctor, and will bristle if you call them Dr.