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Emergency Medical Hologram: Misc



Up to date as of February 02, 2010

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For the EMH from the USS Voyager, see: The Doctor.

The Emergency Medical Hologram or EMH is a sophisticated holographic program used upon Starfleet starships and facilities in the late 24th century to assist medical staff in times of emergency. The program whose formal name is EMH Program AK-1 Diagnostic and Surgical Subroutine Omega-323 was developed by Dr. Lewis Zimmerman on Jupiter Station (VOY episodes: "Lifesigns", "The Cloud", "Projections", "Inside Man", "Life Line").

EMHs are programmed with five million possible treatments from the collective information of 2000 medical references and the experience of 47 individual medical officers, as well has having adaptive programming for situations outside of those in their database. EMHs are only meant to be used a temporary measure to assist existing medical staff, or in extreme cases, to temporarily replace them a new doctor is assigned. (VOY episodes: "Caretaker", "Future's End, Part I")

Mark I

Work on the EMH program began as far back as 2360 which was conducted by Starfleet Medical though information on it was known only to a few individuals. (TOS novel: Catalyst of Sorrows) Zimmerman's initial proposal for an Emergency Medical Hologram was presented in 2365 to Dr. Beverly Crusher (VOY short story: "Bedside Matters") By the time the holographic matrix was completed in 2370, it had to have official approval by Leonard McCoy. (Strange New Worlds short story: "Doctors Three")

The Mark I EMH was modelled on Dr. Zimmerman, in both its physical characteristics and personality. This was considered a flaw in the program's design by many Starfleet medical personnel, including Dr. Elizabeth Lense of the USS Lexington. (SCE eBook: War Stories, Book One) Lense later came to appreciate the Mark I EMH's lack of simulated emotionalism. (SCE eBook: Out of the Cocoon)

Given these reactions, the Mark I was quickly replaced on many ships by newer versions. (VOY episode: "Life Line") The existing Mark I EMHs were reprogrammed for more menial tasks, such as scrubbing plasma conduits and mining dilithium ore. (VOY episode: "Author, Author") Several Mark I EMHs continued to serve in their intended roles, including "The Doctor" of the USS Voyager and the EMH on the USS Equinox: both vessels being stranded in the Delta Quadrant, did not, of course, have access to upgraded versions. (VOY novelization: Equinox). A Mark I EMH also remained on the USS Enterprise-E into 2379, as CMO Beverly Crusher preferred it to later versions. (TNG - A Time to... novel: A Time to Sow)

Later Versions

The EMH Mark II was programmed with new physical characteristics and to be a much more polite and friendly individual. New starship classes such as the Prometheus-class were fitted with shipwide holographic projection systems so that EMHs could attend emergencies outside of sickbay. (VOY episode: "Message in a Bottle")

The EMH Mark III came into general use during the height of the Dominion War, and included stringent security protocols. It also featured an improvement of its personality subroutine over the previous models. However, following the end of the war, these security measures came to be viewed as a hindrance to effective caregiving. (TNG novel: Losing the Peace)

The EMH Mark IV came into use in early 2376, replacing the Mark III. (VOY episode: "Life Line", TNG novel: Losing the Peace)

The EMH Mark IX was online by 2380. This version looked like a young, female with strawberry-blonde hair, and could replicate herself as necessary. A Mark IX nicknamed "Nina" was active aboard the Enterprise in mid 2380. (TNG novel: Greater Than the Sum) Although Doctor Crusher had previously mentioned that she had sworn to never use the EMH (TNG movie: First Contact), Nina was often used following heavy combat, especially during the Borg Invasion of 2381. (ST - Destiny novel: Mere Mortals)

The EMH Mark XI was in use by 2381. (VOY novel: Full Circle)



This article uses material from the "Emergency Medical Hologram" 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.

The original EMH, the Mark I (2373).

The Emergency Medical Holographic program (EMH) was a sophisticated hologram used on most Federation starships in the late 24th century that was designed to provide assistance to medical staff in times of emergency. It was developed by Dr. Lewis Zimmerman on Jupiter Station and was formally known as EMH Program AK-1 Diagnostic and Surgical Subroutine Omega-323. (DS9: "Doctor Bashir, I Presume"; VOY: "Projections", "Lifesigns")


Mark I

The Mark I was based on their designer, Dr. Zimmerman, both physically and psychologically. This produced an arrogant and irritable hologram that became notorious for its less than gracious bedside manner, which saw some doctors try to avoid activating the program. (Star Trek: First Contact)

The first vessel equipped with the Mark I was the USS Voyager. (VOY: "Relativity") The Doctor, as it was known on Voyager would also become the most notable Mark I due to its continuous operation over several years and it evolving from a purely short-term emergency protocol to a critical and important contributor to the crew of the USS Voyager during its years stranded in the Delta Quadrant. (Star Trek: Voyager)

The Mark I would eventually be declared "defective" and replaced by newer models. The Mark Is were transferred to undertake menial tasks such as dilithium mining and scrubbing plasma ducts. (VOY: "Message in a Bottle", "Life Line")

Mark II

The EMH Mark II (2374).

The EMH Mark II was the designation for the second instalment of the Emergency Medical Holographic program, which became standard equipment aboard Federation starships starting in 2374. The Mark II prided itself as superior to its predecessor, the Mark I, whose appearance and personality were modeled after project designer Lewis Zimmerman. (VOY: "Message in Bottle")

Although the EMH Mark II was programmed with a better bedside manner than the Mark I, USS Lambda Paz chief medical officer Aurellan Markalis found that ship's Mark II to be just as rude as its predecessor. Its standard greeting to individuals with whom it was unfamiliar was "What the hell are you doing in my sickbay? I am programmed to identify every member of this crew. You are not one of them." As of the launching of the Lambda Paz, the program had not been updated to identify Limis Vircona and the other Maquis aboard as members of the crew, and so regarded the captain as an intruder when the two first met. (Star Trek: Lambda Paz: "Revenge a Dish Best Served Cold")

Later versions

By 2376, a Mark III and Mark IV of the EMH program had been developed. (VOY: "Life Line") Additionally work was started on a variant known as the Long-term Medical Holographic program. (DS9: "Doctor Bashir, I Presume")

Zimmerman eventually developed a version with full medical capabilities and functionality based on The Doctor, known as the Supplementary Medical Holographic program. (Star Trek: Remington)

Other races

Romulans designed an EMH based on a design of holo-emitter that was extensively used by the Tal Shiar to execute missions that required shapeshifting. As such, the EMH could change its appearance according to the patients it served. (RIS Bouteina: "No Child Left Untested")

Sometimes, faulty EMHs could be frightening to behold by Romulans. Depending on the nature of the EMH's failure, they can frighten patients rather than help them heal. Also, their holoprojector was located into their footwear, thus limiting their capabilities for shapeshifting. This could be a liability for the Tal Shiar if they chose to use EMHs on espionage missions among the Hydrans or other species that had abnormal feet, like Bowsers. (RIS Bouteina: "Monster-in-a-Box")

The Rakelli were also fond of using EMHs as fashion objects, but as a fashion object, it was more the shoe in which the holoprojector was placed that served as such, rather than the EMH itself, although EMHs were used on occasion by Rakelli fashion designers as models for clothing. Their EMHs had a changeable holoprojector. (RIS Bouteina: "Yesterday's Lyrans")

Notable EMHs


RIS Bouteina

Since the crewmen on the Bouteina has changed the appearance of their EMHs several times, and they even had more than one, the personalities of these EMHs are listed in chronological order by their owners.

Ships with unnamed EMHs

Background Information

External links

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


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