Plastic surgeon
A plastic surgeon was a surgeon who specialized in cosmetic surgery.
In 1930, James T. Kirk told a police officer who was about to arrest him and Spock mentioned an American missionary "who was actually a skilled plastic surgeon in civilian life" having been responsible for Spock's unusual ear shape. (TOS: "The City on the Edge of Forever")
In February 2152, Jonathan Archer encountered a physically altered Tandaran agent named Keyla on Risa. He noted that her surgeons "did a nice job," adding that "[a]ll the Tandarans I met had a very distinctive feature, right here [on the bridge of the nose]." He further explained that "[T]hey may be able to change your face but not your DNA." (ENT: "Two Days and Two Nights")