Doctor M'Benga was a male Starfleet medical officer who served aboard the USS Enterprise under Captain James T. Kirk, during a five-year mission the starship undertook. In the event of Chief Medical Officer Leonard McCoy's absence, M'Benga became the ranking CMO. He conducted his medical internship on Vulcan, an experience that made him particularly skilled in treating members of that species. In 2268, M'Benga treated First Officer Spock for a serious gunshot wound. He had to slap Spock violently to bring him out of his Vulcan healing state. (TOS: "A Private Little War" )