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Leonard McCoy: Misc



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For the mirror universe counterpart, see Leonard McCoy (mirror).
See Leonard McCoy (alternate reality) for an alternate counterpart, from the reality created by Nero's changes dated 2233.
For other uses, see McCoy (disambiguation).
Full Name: Leonard Horatio McCoy
Known aliases: Leonard Edward McCoy
Species: Human
Gender: male
Height: 6'
Weight: 158 lbs.
Eye color: blue
Hair color: brown (grayed)
Birthplace: Georgia, Earth
Born: 20 January 2227
Affiliation: Federation
Mother: Eleanora McCoy
Father: David Andrew McCoy
Marital Status: divorced
Spouse(s): Jocelyn "Honey" McCoy
Children: Barbara McCoy, Joanna McCoy (b. 2249)
Other relatives: grandchildren and great-grandchildren; T.J. McCoy (paternal grandfather)
Occupation: doctor
Previous Assignment: CMO, USS Enterprise-A
Final Assignment: Starfleet Medical
Rank: Admiral, (retired)
Insignia: Image:Red_Adm_2373.png

Leonard Horatio McCoy was a human Starfleet officer, best known for serving aboard the USS Enterprise (NCC-1701) and USS Enterprise-A) as chief medical officer.

The Crucible novel Provenance of Shadows established his middle name "Horatio." Prior to Star Trek VI: The Undiscovered Country, which established McCoy's middle initial as "H.," various publications referred to McCoy as "Leonard Edward McCoy."



Leonard H. McCoy, the son of David Andrew McCoy and Eleanora McCoy, was born in Atlanta, Georgia, United States of America, Earth on 20th January 2227. His grandfather, Thomas Jackson "T.J." McCoy, M.D., was the Chief of Medicine at Emory University Medical Center in Atlanta in the 2220s.

One of his great-uncles was a proprietor to one of the top productive plantations in the South during the 19th century. His ancestor's advantage was a self-mixed form of herbicide. McCoy still had the recipe on Enterprise, and synthesized the concoction in his lab. He later used the "weed spray" to immobilize the swoopers of Phylos. (TOS novelization: Star Trek V: The Final Frontier; TOS - Strange New Worlds VI short story: "Bum Radish: Five Spins on a Turquoise Reindeer"; TOS comic: "Who's Who in Star Trek" #1; TOS novel: The Final Reflection; TAS episode: "The Infinite Vulcan")

One of McCoy's grandmothers lived in Tennessee, where she taught Sunday school. (TOS novel: Vulcan's Forge)

Early Years

In 2231, at the age of four, Leonard accompanied his father on a trip to Aberdeen, where he briefly met young Montgomery Scott, thus giving birth to not only their shared tastes (such as in alcohol), but their smooth delivery in performing as scientist and assistant on 20th Century Earth. The two also had done a convincing act while on the android world of Mudd, and when on jury duty during the Kirk/Lester trial. (TOS - Strange New Worlds VI short story: "Bum Radish: Five Spins on a Turquoise Reindeer", TOS novel: Star Trek IV: The Voyage Home, TOS episode: "I, Mudd", TOS episode: "Turnabout Intruder")

Disaster struck McCoy at the age of seven on August 17, 2234, when Leonard and his cousins built a raft and sailed down the Chattahoochee River. Leonard's cousin, David McCoy drowned when the raft broke apart. (TOS novel: Ice Trap)

In September 2236, Leonard, aged nine, and his family moved into another southern town on Earth. Leonard met Mark Rousseau at school, and the two became best friends. The two parted in 2243 when Rousseau entered Starfleet Academy, at this time McCoy was determined to enter medical school. (TOS novel: The Better Man)

While in Texas in 2243, McCoy was thrown from the horse that he had been riding. McCoy suffered a concussion and bruised ribs, and was treated at a hospital in Waco, Texas. After suffering another head injury in 2268, McCoy briefly forgot everything that had occurred from the time of the first accident until the time of the second accident. (TOS novel: Dreams of the Raven)

At sometime during his childhood, McCoy attended one of the last religious "revival" meetings held on Earth, led by a preacher who railed against non-human races. This man later made an attempt on the life of the Andorian ambassador's life. (TOS novel: Vulcan's Forge)

McCoy first became attracted to his future wife, Jocelyn Darnell, at a high school social in early 2244, when Jocelyn forced McCoy to dance with her to counter the jealousy of her overpossessive boyfriend, Clay Treadway. Treadway brawled with McCoy there on the dance floor, but McCoy knocked him down and left with Darnell. This began their relationship. (TOS novel: Shadows on the Sun)

In late 2244/early 2245, McCoy, aged 17, entered college at the University of Mississippi ("Ole Miss"). During his time there, his roommate was a Tessma, Sinnit Arvid. In 2245, McCoy met the Trill, Emony Dax at a gymnastic tournament in the Menlo T. Hodgkiss Memorial Gymnasium, and the two had a brief relationship. Undecided at the time on his choice of career, Dax suggested he should be a doctor, because he had "the hands of a surgeon." (DS9 - The Lives of Dax short story: "Old Souls"; DS9 novelization: Trials and Tribble-ations)

Later that year, McCoy served as an observer aboard the USS Hood (TOS novel: Crisis on Centaurus) before officially enrolling in medical school, though he studied at his home in Georgia. (TOS novel: Shadows on the Sun)

Shortly after receiving his doctorate, McCoy married Jocelyn, and around 2249, their daughter, Joanna McCoy was born. (TOS novel: Shadows on the Sun; TAS episode: "The Survivor")

In 2249, McCoy commanded an inoculation program to combat a virus on planet Dramia II. However, when the team left, a plague broke out, wiping out half the population. (TAS episode: "Albatross")

Later in the 2250s McCoy met a Lieutenant Clark Terrell. The two were friends until the latter's death in 2285. (TOS novelization: Star Trek II: The Wrath of Khan)

Early Starfleet Career

Aboard the Republic

In 2253, after discovering Jocelyn had become involved with Clay Treadway once more, McCoy grew extremely depressed, and by chance saw an advert for Medicine on the cutting edge - Practicing in space. He immediately signed up at the Jackson Mall, entered Starfleet and underwent the course, which was taught by Angelina Mola, before he was assigned as a junior medical officer aboard the USS Republic under the command of Captain Hillios. McCoy worked in sickbay under chief medical officer, Vincent Bando. While aboard the Republic, McCoy saved the life of a ruthless assassin on the planet Ssan. (TOS novels: Planet of Judgment, Shadows on the Sun, Recovery, The Better Man)

Aboard the Richard Feynman

In 2254, thanks to McCoy's excellent work on the Republic, he was made chief medical officer aboard the USS Richard Feynman, under the command of his old friend, Mark Rousseau. However, following a fall-out with Rousseau, McCoy accepted a demotion as a junior medical officer aboard the USS Koop. (TOS novel: The Better Man)

Aboard Starbase 7

By 2255, McCoy transferred to Starbase 7 as chief medical officer. A few months later, Lieutenant James T. Kirk, of the USS Farragut, was sent to the base for rehabilitation after Kirk was badly injured battling pirates from Epsilon Canaris III. In Kirk's many months at the base, McCoy and he became good friends, and Kirk visited McCoy's home on Centaurus many times. (TOS novel: Crisis on Centaurus)

While on Starbase 7, McCoy also had a brief relationship with a woman named Nancy, who later married Professor Robert Crater. (TOS novelization: The Man Trap)

Aboard the Constitution

In 2257, McCoy transferred aboard the USS Constitution (NCC-1700) to work under chief medical officer Christina Velasquez. Also serving aboard the Constitution at that time was McCoy's old friend, Lieutenant Commander Kirk. (TOS - My Brother's Keeper novel: Enterprise)

Starfleet Teaching Hospital

McCoy returned to Earth in 2262, and took up a position at Starfleet Teaching Hospital working with Dr. Carol Marcus and Christine Chapel. In late 2263, Captain Kirk and Lt. Commander Gary Mitchell were placed under McCoy's care after the destruction of the USS Lydia Sutherland at the Battle of Ghioghe. (TOS novel: Enterprise: The First Adventure)

The Enterprise (NCC-1701) Years

The Three-Month Voyage

In 2264, McCoy accepted Captain Kirk's offer to become Chief Medical Officer aboard the USS Enterprise (NCC-1701). (TOS novel: Enterprise: The First Adventure)

According to the elder Spock in TOS novelization: Star Trek, "In both our histories the same crew found its way onto the same ship in a time of ultimate crisis." This may imply that there is an untold story set in the prime timeline in which Kirk's crew faced an extremely serious challenge while still a new and untested unit.

McCoy's first stint aboard the Enterprise was cut short when he learned that his father was dying of pyrrhoneuritis. McCoy took an extended leave of absence to look after his father, and was replaced by Dr. Mark Piper. (TOS novel: Strangers from the Sky)

A memory that would haunt McCoy for years was when, at the request of his father, he turned off all his life support, allowing his father to die with dignity. However, a few weeks later, a cure for pyrrhoneuritis was developed. (TOS novelization: Star Trek V: The Final Frontier)

Mission to Capella IV

Following the death of his father, McCoy was asked by Starfleet Medical to take part in a medical relief mission to Capella IV. He gratefully accepted, to get as far away from Earth as possible and to help others. However, by 2265, he was tired of locking horns with the Capellans, who refused any modern medical technology.

Return to the Enterprise

McCoy in 2267

Luckily for McCoy, the Enterprise had returned to Earth for the funeral of Gary Mitchell, so when Kirk offered McCoy his old position as CMO back, McCoy jumped at the chance. (TOS - My Brother's Keeper novel: Enterprise)

Jocelyn Darnell sent McCoy their divorce papers in 2266, and McCoy signed them without a fight. (TOS novel: Shadows on the Sun) Although he would go on to refer to Darnell as "whatsername" and worse, he wore his wedding ring for the rest of his life.

While in a Cordrazine-induced frenzy in 2267, McCoy jumped through the Guardian of Forever and was transported to Earth in the year 1930. While there, the shape of time itself hinged on his actions, resulting in a drastically altered timeline when he saved Edith Keeler from a fatal traffic accident. Although time later resumed its normal course, the phaser McCoy had brought with him was stolen by "Rodent," a Twenty-First Street Mission resident, who was vaporized along with the weapon when he inadvertently triggered it. (TOS episode: "The City on the Edge of Forever") Later the same year, while serving aboard the Enterprise, McCoy was accidentally transported into the mirror universe. McCoy risked being left behind in the parallel reality to save the mirror version of Spock from a fatal subcranial hemorrhage. Spock then mind-melded with McCoy, and learned about the Federation of the regular universe. McCoy returned successfully to his own universe, but Spock's visions of a better reality would be passed on to multiple Vulcans in the mirror universe, and lead to a secretive resistance group against the Klingon-Cardassian Alliance. (TOS - Mirror Universe novel: The Sorrows of Empire)

The following year Doctor McCoy suffered a severe head injury after a gravity adjustment on the Enterprise caused him to fall and hit his head on a bulkhead. Even though Dr. Eduardo Cortejo Alvarez was able to operate almost immediately, McCoy was still left with severe amnesia for a period of about two weeks. During this time he had lost all memory of the past twenty five years, including his prior service on the Enterprise and his relationships with colleagues such as Captain Kirk and Mr. Spock. After Spock was seriously injured and required surgery, the impact of watching Spock dying on an operating table was enough to bring Dr. McCoy out of his amnesiac state, and McCoy was able to save Spock's life.(TOS novel: Dreams of the Raven)

In 2270, McCoy was placed in temporary command of the Enterprise by Captain Kirk after complaining too much about how the ship should be run. Captain Kirk beamed down to a planet known as Flyspeck to engage in a routine diplomatic mission. Intending to leave McCoy in command only for one afternoon, Kirk did not realize that he had been transported ahead in time one week. Unable to locate Captain Kirk, McCoy was forced to remain in command of the Enterprise for the week. Complicating the search for Kirk was the arrival of Klingons who had their own designs on Flyspeck, plus having to deal with an Admiral who had a reputation for being difficult. When Kirk realized that he had been transported ahead in time, he asked to be returned to the Enterprise so that McCoy could return command to him. (TOS novel: Doctor's Orders)

Eventually, in 2270, McCoy retired from Starfleet. At least two and a half years later, he was "drafted" (as McCoy himself once put it) back into service for the V'Ger mission. (ST roleplay module: All Our Yesterdays: The Time Travel Sourcebook; ST movie: The Motion Picture)


Spock's Fal-tor-pan in 2285.

In 2285, Khan Noonien Singh escaped from the surface of Ceti Alpha V on board the USS Reliant. Khan went to find James T. Kirk and take revenge against him for leaving him on Ceti Alpha V and not bothering to check on Khan's progress. Khan managed to seriously damage the USS Enterprise (NCC-1701). Khan then took the Genesis Device from the underground laboratory on Regula. In a deadly game of cat and mouse, Kirk finally defeated Khan in the Mutara Nebula, however in a last ditch effort to destroy Kirk, Khan set the Genesis Device to explode. The Enterprise was only able to escape when Captain Spock sacrificed himself to bring the warp drive back on line just before the Genesis Device exploded. (TOS movie: Star Trek II: The Wrath of Khan)

Just before Spock had entered the radiation-soaked dilithium chamber, he entered into a mind meld with Dr. McCoy, and transferred his katra into McCoy's mind. Spock's body died shortly after the Enterprise escaped the detonation of the Genesis device, however Spock's consciousness was still alive in the mind of Leonard McCoy.

In the weeks after Spock's apparent death, McCoy began behaving strangely. As the Enterprise docked in spacedock, McCoy broke into Spock's quarters. This tripped a security alarm on the bridge, and Admiral Kirk went to confront the intruder. Kirk was shocked to find McCoy in the quarters, who asked Kirk why he had been left behind on Genesis, and requested that Kirk climb the steps of Mount Seleya on Vulcan. A horrified Kirk called for medics to be brought to Spock's quarters when McCoy collapsed in his arms. McCoy was examined and it was believed that he was suffering from exhaustion. McCoy promised Kirk that he would stay at his home on Earth for the time.

Sarek soon arrived on Earth and revealed the possibility that Spock's katra might have survived. Sarek did not find the katra in Kirk's mind. The two searched through engine room recordings, and discovered that McCoy was carrying Spock's katra. Sarek asked Kirk to retrieve Spock's body and bring the body and Dr. McCoy to Mount Seleya, claiming that it was the only way both could find peace. Learning that he was suffering from the effects of a Vulcan mind meld, McCoy stated that it was the "green blooded son of a bitch" getting revenge for all the arguments he had lost over the years.

When Starfleet Command refused to allow McCoy, Kirk, and the remaining senior staff of the Enterprise to return to the Genesis Planet, Kirk and his senior officers stole the Enterprise. En route to Genesis, McCoy took the science station, and using Spock's skills was able to use the scanners to determine that there were no vessels pursuing the Enterprise. After arriving at Genesis, they learned that Spock's body had been regenerated by Genesis. Kirk and his crew managed to defeat Commander Kruge, however they lost the Enterprise in the process. Spock's body had reached the same age as it was just prior to his entering the dilithium chamber of the Enterprise at this point.

After being beamed on board Kruge's Bird-of-Prey, the crew of the late Enterprise proceeded at best speed to Vulcan. Arriving at Vulcan, the crew climbed the steps of Mount Seleya, where Sarek requested that the Fal-tor-pan be performed on Spock. Agreeing to this request, the High Priestess T'Lar performed the Fal-tor-pan, removing the katra of Spock from McCoy's mind and refusing it into Spock's body. (TOS movie: Star Trek III: The Search for Spock)


Over the next three months, Captain Spock recovered his memories. Spock and McCoy underwent a number of mind melds to ensure that any remaining vestiges of Spock were transferred from McCoy back to Spock. Despite losing memories of his past life-Spock remembered Kirk's first name as "Jim", to his own fascination. Which McCoy warmly smiled, pointing to his head, for his Vulcan friend.

McCoy named the captured Klingon bird-of-prey HMS Bounty in reference to the mutiny on board the British naval vessel nearly 500 years earlier. McCoy and the senior staff of the Enterprise all voted to return to Earth to face the consequences of traveling to the Genesis Planet to rescue Spock. Spock joined them, even though McCoy was concerned that Spock's recent experiences meant that he was not yet ready to resume his post.

On their way back to Earth, the Cetacean Probe arrived, searching for the humpback whales that it had lost contact with. The probe began reconditioning Earth, which endangered the population of Earth. To get the probe to stop damaging Earth, McCoy and the crew of the Bounty traveled back to 1986. While in the past, McCoy worked with Montgomery Scott and Hikaru Sulu went to find materials to enclose a tank on board the Bounty to hold humpback whales. The Bounty took the whales George and Gracie in to the 23rd century, where they managed to convince the probe to stop its assault on Earth.

After arriving back in the 23rd century, McCoy was concerned that he and Spock were not fully separated from each other, and that depending on his punishment he might not be able to participate in further mind melds with Spock. Spock reassured McCoy that the two men had been completely separated from each other. Though now the doctor had a better perspective in Spock's field of expertise. Understanding his problems with raw data inherent with time travel computation, he told him to make an educated guess. And that even though it wasn't in his nature to do so; no one is perfect. In a session of the Federation Council, McCoy learned that any charges against him had been dropped. The only punishment was directed at Kirk, who was reduced in rank from Admiral to Captain. (TOS movie: Star Trek IV: The Voyage Home)


McCoy, years later, once again told Spock none is perfect. After missing their exiting deck, in the escape from Enterprise's brig. He came to Spock's defense, reminding their captain that he could no more kill Sybok than him. And that Spock is both Vulcan and human. McCoy states he never ceases to amaze him. Spock replied the same for himself. (TOS movie: Star Trek V: The Final Frontier)

Later years

In 2294, McCoy became seriously ill, necessitating the replacement of several organs by ones that had been cloned earlier and held in storage for such an eventuality. (TOS novel: The Captain's Daughter)

McCoy successfully recovered, and in 2296 was serving under Captain Spock on board the starship USS Intrepid II. (TOS novel: Vulcan's Forge)

Around the turn of the 24th century, McCoy joined the teaching staff at Starfleet Medical Academy. One of his students was Jo Stern, with who he would form a lasting friendship. Stern would call him "Mac," the only person he allowed to do so. (TLE novel: Well of Souls)

At some point during the USS Enterprise-B's time in service, McCoy served as her chief medical officer. (TNG novelization: Encounter at Farpoint)

By 2336, McCoy was working at Starfleet Medical. (TLE novel: Well of Souls)

In 2344, McCoy escorted Spock and Saavik to their wedding ceremony. (TOS novel: Vulcan's Heart)

In the 2350s, he accompanied Spock to the Romulan Empire, where he met Eric John Stiles. (TNG - Double Helix novel: Red Sector)

McCoy retired from Starfleet in 2353.

In 2363, McCoy suffered an injury after tripping over one of his great-great-grandchildrens' toys which necessitated a stay at Bethesda Starfleet Hospital, preventing him from attending the launch of the USS Enterprise-D. In "revenge", McCoy connived the USS Hood to take him to Farpoint Station, where they would be transferring crew to the new Enterprise. McCoy inspected the ship's medical facilities of the new ship, and was escorted back to the Hood, via shuttlecraft, by Lieutenant Commander Data. McCoy told the young android the ship was new but had the right name, and that if she was treated well she'd always bring the crew home. (TNG novelization: Encounter at Farpoint)

The novel Provenance of Shadows has McCoy's death shortly after this tour, despite the contradiction of other stories.

McCoy revisited the Enterprise-D in 2367 (TNG comic: "In Memory Yet Green..."), and again in 2371. (TNG novel: Crossover) Spanning these four years, his lifelong friend and colleague Spock asked him a personal question. Comparing the captains of Enterprise-A and -D, which would McCoy summon in a time of need. He answered, in honesty Spock, himself. (TNG comic: "In Memory Yet Green...") This, in fact, came true aboard the bridge of a Defiant-class starship. (TOS novel: The Return) Spock swore to secrecy his choice of command; not even to share with Saavik, lest McCoy totally deny it. (TNG comic: "In Memory Yet Green...")

During this period, McCoy was also an occasional guest lecturer at Starfleet Medical Academy. (SCE eBook: Wounds)

By the late 24th century, McCoy was forced to have to wear an exoskeleton, including leg braces (TOS - Strange New Worlds II short story: "Doctors Three"; TOS novel: The Return), although he later was given implants which allowed him to discard the exoskeleton. (TOS novel: Spectre)

In 2375, he assisted Kirk, Spock and Montgomery Scott in fighting the denizens of the mirror Universe (TOS novel: Spectre) before attending the wedding of Kirk and Teilani (TOS novel: Dark Victory) and setting out to find a cure when Teilani was poisoned by eugenic child 7. (TOS novel: Preserver)

In 2376, McCoy joined in the celebrations surrounding Starbase 11. (ST - New Worlds, New Civilizations short story: "225 Years of Service")

In 2378, he and Spock, both wearing the current Starfleet uniform, retrieved an unconscious James T. Kirk from his battle with the Bajoran called Corrin Tal. (TOS novel: Captain's Peril)

In 2381, McCoy assisted in the Médecins Sans Frontières relief operation on P'Jem following the Borg invasion. (ST novel: A Singular Destiny)

Alternate timeline

After traveling through the Guardian of Forever in 2267 to New York City, 1930, McCoy saved Edith Keeler's life, an act which, unbeknownst to him, altered Earth history. McCoy spent two years in New York, expecting his colleagues to follow him back in time and rescue him. He placed numerous classified ads directed at Kirk and Spock, in the hope that these newspaper records will be retained into the 23rd century. By 1932, however, he became resigned to the conclusion that rescue was not coming, and he left New York and the 21st Street Mission to re-establish a life for himself.

With little money, he jumped a southbound freight train, heading for his native Atlanta. On the way, McCoy was accosted by two other vagabonds, forcing him to jump from a moving train. He found himself in Hayden, South Carolina, badly injured and in need of medical attention. He encountered local resident Lynn Dickinson, who took him in and called on Doctor William Lyles to treat his injuries. Lynn and her husband, Phil, put McCoy up during his convalesce, and continued to board him for several weeks after, claiming McCoy as Phil's second cousin.

In late 1932, McCoy was compelled to perform an emergency tracheotomy, revealing himself to be a physician. Lyles, who had been initially suspicious of McCoy, offered him a partnership in his practice. When Lyles died in 1934, McCoy took on his home and office and became Hayden's sole doctor.

A rift formed between McCoy and Phil Dickinson after the doctor acted to defend an African-American man named Benny Russell from racist attackers. The incident also prompted Lynn to reconsider her own prejudices, and elevate her regard for McCoy.

McCoy was surprised when December 7, 1941, passed without news of the bombing of Pearl Harbor. He realized then that, because Edith Keeler had survived her brush with death years earlier, was able to become a powerful voice in the American Pacifist Movement and exert significant influence on the Roosevelt Administration, so much so as to delay or prevent the United States entry into World War II. McCoy confronted Keeler during a rally in Atlanta in late 1941, but was unable to sway her from her anti-war stance.

By 1944, after London had fallen to the Nazis and Japan had conquered Australia and New Zealand, the Axis finally struck against the United States in Hawaii and drew the nation into war. Phil Dickinson enlisted in the Army, and was killed in action in Ireland in May of 1946.

McCoy and Lynn grew closer in the years that followed, though McCoy insisted on keeping the relationship platonic. However, when the Nazis dropped an atomic weapon on Atlanta in 1954, at the same time Lynn was supposedly in the city, McCoy was moved to propose marriage.

In 1955, a Nazi fighter was shot down over Hayden and crashed on the edge of town. McCoy, while attempting to offer aid to the pilot, was stabbed and killed. (TOS - Crucible novel: Provenance of Shadows)

Starfleet service record

location assignment dates rank or rate assignment insignia rank insignia
Starfleet Academy student officer 2250s cadet Assignment patch. Uniform sleeve.
USS Republic medical intern 2250s officer Assignment patch. Uniform sleeve.
Starbase 7 medical officer late 2250s File:Starbase 7 insignia.jpg
Capella IV medical observer early 2260s Assignment patch.
USS Enterprise (NCC-1701) chief medical officer 2265-2270 lieutenant commander Assignment patch.
Uniform sleeve.
commander Uniform sleeve.
2273-2285 Assignment insignia. Uniform epaulet. Uniform sleeve.
Badge insignia. Epaulet insignia.
USS Enterprise (NCC-1701-A) 2286-2293
medical officer 2293-early 24th century
Starfleet Command retired/reserve activation late 24th century admiral Badge insignia. Lapel insignia. Lapel insignia. Collar insignia.
Collar insignia.
Badge insignia.
Epaulet insignia.



Chief medical officers of the starships Enterprise
Enterprise (NX-01) Phlox Enterprise assignment patch.
USS Enterprise (NCC-1701) Poole-AprilBoycePiperMcCoyChapel USS Enterprise assignment insignia.
USS Enterprise (NCC-1701) (alternate reality) PuriMcCoy
USS Enterprise (NCC-1701-A) McCoy
USS Enterprise (NCC-1701-B) MetcalfeMichaelsMcCoyMorell
USS Enterprise (NCC-1701-C) CasadoSternAristide
USS Enterprise (NCC-1701-D) CrusherPulaski
USS Enterprise (NCC-1701-E) CrusherStevenson
ISS Enterprise (NX-01) Phlox Emblem of the Terran Empire.
ISS Enterprise (NCC-1701) McCoy
ISS Enterprise (NCC-1701-D) Crusher
USS Constitution personnel
USS Constitution (22nd century) La Forge USS Constitution assignment insignia.
Seal of the Federation Starfleet.
USS Constitution (prototype) AugenthalerBanksBartonBorrikCarvajalChafinFerrisJ. GaynorHerzogA. HirotaA. JankowskiW.M. JefferiesJ.T. KirkLidellR. LikinsLivingstoneD. LynchMasefieldL.H. McCoyMedinaG. MitchellParkPolcovichRawitzerRebouletTomberlinC. VelasquezP. WaterstonR. WesleyWootenZuletaunnamed personnel
USS Constitution (Galaxy-class) J. van OsterlichSolackT. Soya • B. Spencer
Starbase 7 personnel
Emblem of the United Federation of Planets Dexter O. Armbruster • Blunt • Brady • Sandra M.J. Entwhistle • Golav Mahth • Leonard McCoy • David A. St. James • Springer Seal of the Federation Starfleet
USS Enterprise (NCC-1701) medical personnel
under Charles Rasmussen & Robert April S. Poole-AprilP. Boyce USS Enterprise operations assignment insignia.
under Christopher Pike P. BoyceG. Carlotti • Castelano
under James T. Kirk
(first five-year mission)
B. Abrams • M. AndrusTaurus • BrentP. CarmenC. ChapelConnorsE. DehnerA. DickinsonA. Erickson • A. Ferrara • HarrisonHinchC. IversJ. M'BengaL.H. McCoyH. NoelS. PetersonM. PiperR. Rigel • Sanchez • K. Tracy
subsequent missions under Kirk & Spock AmekentraL. BurkeC. ChapelDuaneT. KrejciLiftigL.H. McCoyH. Tanzer USS Enterprise medical assignment insignia.
see also: administrative personnelcommunications personnelengineering personnelpilots & flight control personnelsecurity & tactical personnelsciences personnelsenior staffunnamed
USS Enterprise-A personnel
Emblem of the United Federation of Planets Arex • Alloca • Arons • Bearclaw • Benson • BloemkerBoyajianBryce • Bob • Bull • Burke • ChapelChekov • Chip • Codobach • Davis • Dax • Delaney • DevereauxFinneyFlahertyFouton • Fucci • Hazzard • Hunter • Isenberg • Jackson • Kaminsky • Kirk • Kitty • Konom • Lawlor • Lee • Li • LudloMcCoy • McIntyre • McMurphy • Meyer • M'RessM'yraNewman • Popov • Rasche • Saavik • Samno • ScottSherwoodSpock • Sterno • SuluTuchinskyUhuraValeris • Wetherell • D. Wise • unnamed USS Enterprise-A personnel Seal of the Federation Starfleet
USS Intrepid personnel
USS Intrepid (NCC-1631) Garth • Spiak Seal of the Federation Starfleet.
USS Intrepid II (Constitution-class) Setek • Sehlk • Si'jsk • Sobek • Suvuk • T'Kiha • T'Leiar • T'Noy
USS Intrepid II (Oberth-class) AthertonClaytonDiverDuchampsL. McCoyRichardsSpockN. Uhura
USS Intrepid (NCC-38907) D. DieghanS. RozhenkoJ. TavaresTobias
USS Intrepid (NCC-74600) W. Emick • J. Hayek • D. Kaplan • T. Riley • V. Stadi


  • Sarek
  • Crucible: McCoy-Provenance of Shadows
  • Crossover
  • Stange New Worlds 9:
  • Ashes of Eden
  • The Return
  • Avenger
  • Spectre
  • Captain's Peril
  • Vulcan's Heart
  • Vulcan's Forge
  • Double Helix
  • The Captain's Daughter
  • Preserver

External link

This article uses material from the "Leonard McCoy" article on the Memory-beta wiki at Wikia and is licensed under the Creative Commons Attribution-Share Alike License.

ST Expanded

Up to date as of February 07, 2010

The Star Trek Expanded Universe Database is for fanon and related content. See for the canon Star Trek wiki.

For the mirror universe counterpart, see Leonard McCoy (mirror).

Leonard H. McCoy, MD, was the noted chief medical officer, of the USS Enterprise and USS Enterprise-A during the late 23rd Century.

He was born in 2277 in the "Old South" region of North America on Earth, the son of David McCoy. (Star Trek III: The Search for Spock; TNG: "Encounter at Farpoint")

McCoy attended the University of Mississippi during the mid-2240s, where he met Emony Dax, who was visiting Earth to judge a gymnastics competition. (DS9: "Trials and Tribble-ations")

The episode suggests he had not yet decided to study medicine.


Early career

In 2251, McCoy was placed in charge of a massive inoculation program on Dramia II. (TAS: "Albatross") Two years later, he would develop a revolutionary neurosurgical procedure. (VOY: "Lifesigns")

He was later part of a mission to Capella IV. Knowledge gained from this short visit would become useful. (TOS: "Friday's Child")

The five-year mission

McCoy would join the crew of the USS Enterprise in 2266, replacing Dr. Mark Piper as Chief medical officer.

He was the first xenophysician to treat a Horta, by applying a bandage of thermal concrete to the silicon-based lifeform. (TOS: "The Devil in the Dark")

In 2273, McCoy successfully performed open-heart surgery on Ambassador Sarek of Vulcan, despite the Enterprise being under attack and reluctance from Sarek's son Spock to donate blood. (TOS: "Journey to Babel")

The joining of McCoy and Natira

In 2268, McCoy was diagnosed with xenopolycythemia and given one year to live. Shortly thereafter, the Enterprise encountered the Fabrini asteroid-ship Yonada where he met their high priestess, Natira. McCoy fell in love with Natira and consented to the implanting of an instrument of obedience in his head so that he could stay with her. He later changed his mind and decided to return to Enterprise. A cure for xenopolycythemia was found in the Fabrini databanks. (TOS: "For the World is Hollow and I Have Touched the Sky")

Soon after the end of the Enterprise's first Five Year Mission, McCoy would leave Starfleet. Star Trek: The Motion Picture

Later career

Commander, circa 2272

On stardate 7210, McCoy was "drafted" back into Starflled by Admiral James Kirk, using a "little-known, seldom-used reserve activation clause" and was place back into duty as chief medical officer during the V'Ger encounter. He would continue to serve aboard the Enterprise upon the conclusion of the mission. (Star Trek: The Motion Picture)

By stardate 8130.3, Dr. McCoy would serve as a Starfleet Academy instructor aboard the Enterprise under Captain Spock. He also suggested that his friend Admiral Kirk should not have accepted a 'desk job'. McCoy was present in main engineering following an attack by Khan Noonien Singh when Captain Spock entered the radioactive dilithium chamber and saved the Enterprise. McCoy objected, but Spock performed a Vulcan nerve pinch and a mind meld to imprint his katra onto McCoy. (Star Trek II: The Wrath of Khan)

McCoy would later become a part of a plot to steal Enterprise and return to Genesis to recover Spock's body. Although Enterprise was destroyed by rogue Klingons, the crew commandeered the attacking bird of prey to transport McCoy and the rejuvenated Spock to Vulcan. Spock's katra was restored via an ancient Vulcan technique known as the fal-tor-pan. (Star Trek III: The Search for Spock).

McCoy later participated in a plan to time travel back to 20th century San Francisco to recover a pair of Humpback Whales. As a token of appreciation for saving the Earth, all charges against McCoy were dismissed, and he was assigned to the newly commissioned USS Enterprise-A. (Star Trek IV: The Voyage Home)

Shortly after stardate 9522, Enterprise was sent to escort Klingon Chancellor Gorkon to Earth for peace talks. When the Enterprise appeared to fire on Kronos One, Dr. McCoy beamed aboard with Captain Kirk to assist with casualties. McCoy attempted to save the life of Gorkon, but failed. Kirk and McCoy were arrested, tried, and given a life sentence on the asteroid Rura Penthe. McCoy and Kirk were able to escape and were rescued by Spock. They soon discovered a second conspiracy and were able to disrupt a second assassination attempt. McCoy assisted Spock in performing "surgery" on a photon torpedo so that it would home in on the plasma trail of Klingon General Chang's cloaked ship. (Star Trek VI: The Undiscovered Country)

Admiral McCoy touring the Enterprise-D with Data in 2364

On stardate 41153.7, the 137 year old Admiral McCoy inspected the medical facilities of the USS Enterprise-D. He commented on the significance of the ship's name to Lieutenant Commander Data, while also comparing the android to a Vulcan. (TNG: "Encounter at Farpoint")

By 2376, McCoy would fall gravely ill. Spock came to Earth to spend the last few months of the Doctor's life at his side. (USS Baldwin: "Good Will") He would later be buried atop a mountain on Veridian III, along side his friend, James Kirk (USS Baldwin: "Home")

Service jacket

Assignment History

Image:2265 - LCDR (Sciences).PNG Lieutenant Commander 2266-69 Chief Medical Officer, USS Enterprise TOS: "The Man Trap"
Image:2265 - CDR (Sciences).PNG Commander 2270
Image:2278 - CDR (Medical).png 2272-86 Star Trek: The Motion Picture
2286-93 Chief Medical Officer, USS Enterprise-A Star Trek IV: The Voyage Home
Image:2350 - RADM (Sciences).PNG Rear Admiral 2366 Starfleet Medical, retired TNG: "Encounter at Farpoint"


The Death of McCoy in USS Baldwin is meant to parallel the real-life death of DeForest Kelley, who passed away soon after the conclusion of Deep Space Nine.

External links

This article uses material from the "Leonard McCoy" article on the ST Expanded wiki at Wikia and is licensed under the Creative Commons Attribution-Share Alike License.

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