Star Trek: Every Medical Officer Ranked

Doctor Leonard "Bones" McCoy served aboard the USS Enterprise (and USS Enterprise-A) for 27 years, retaining his self-proclaimed status as an "old country doctor" while also treating the Horta, giving prenatal exams to tribbles, even giving mouth-to-mouth to a dying Klingon. McCoy may not actually have the greatest track record as a physician given his famous catchphrase, "He's dead, Jim," but he was nothing if not passionate.

Beyond being a semi-successful doctor not a bricklayer or a psychiatrist or a coal miner or an escalator (yes he once said he was not an escalator), McCoy was also the emotional center for the original triumvirate of Kirk, Spock, and Bones. He was the crusty doctor Katherine Pulaski wanted to be, less the typical Starfleet hero and more the everyman just trying to do his job and feeling very inconvenienced by all the space stuff.

It's appropriate then, for all the inconvenience and annoyance McCoy endured, that he would live to be at least 137 years-old, long enough to talk some folksy smack to another very logical officer of the Enterprise, Lieutenant Commander Data.

Doctor McCoy is simply the quintessential Star Trek doctor and should forever be remembered by the words of a patient he so compassionately treated: "The doctor gave me a pill, and I grew a new kidney. The doctor gave me a pill, and I grew a new kidney."