Holograms related to the Emergency Medical Holographic program and its support programs.

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EMH Mark I Edit

Voyager Edit

EMH backup module Edit

EMH backupmodule

Voyager's EMH in the 31st century

31st century. (VOY: "Living Witness")

Silver Blood Edit

Doctor biomimetic copy

Silver Blood copy of The Doctor

See: Silver Blood. (VOY: "Course: Oblivion")

Deep Space 9 Edit



(DS9: "Doctor Bashir, I Presume")

Equinox Edit

EMH, USS Equinox

Equinox EMH

This version of the EMH was installed on the USS Equinox when it became stranded in the Delta Quadrant by the Caretaker. The EMH was kept online much longer than expected as the ship lost several members of its crew. When the crew decided they wanted to take advantage of nucleogenic lifeforms to enhance their warp drive, the crew deleted the EMH's ethical subroutines in order to study the creature and optimize the effects their remains had. (VOY: "Equinox", "Equinox, Part II")

Enterprise-E Edit


Enterprise-E EMH

Although she swore she'd never use the program, Dr. Crusher activated the EMH program when she needed to buy time for her, her staff, and patients to escape from sickbay when the Borg threatened to overrun it. The EMH protested that stalling wasn't in his program, but managed to distract the invading Borg by offering them analgesic cream for the severe skin irritations that Borg implants cause. As he could not be assimilated, the EMH's fate was unknown. (Star Trek: First Contact)

He was played by Robert Picardo.

Decommissioned EMHs Edit

EMH Mark Is mining dilithium

Decommissioned EMHs

In 2378, the Mark I programs in the Alpha Quadrant were reconfigured for manual labor at Federation mining colonies. At one mining colony, these programs were able to obtain bootlegged copies of the holonovel Photons Be Free. One of the EMH miners found the holonovel "provocative". (VOY: "Author, Author")

The fact that the reconfigured Mark I's could view holonovels suggests that they retained at least some level of sentience left over from their original medical programming.
The EMHs were played by Robert Picardo.

EMH Mark II Edit

Prometheus Edit


Prometheus EMH

To address the flaws in the EMH Mark I, Dr. Zimmerman began work on the Mark II, a prototype of which was finished in time to be included in the sickbay of the USS Prometheus in 2374.

While the Mark I's outward appearance was a copy of its inventor, a disillusioned Dr. Zimmerman changed the outward appearance of the Mark II. Furthermore, the patterns of behavior of the following versions were designed to be more pleasant and courteous. To achieve this, Zimmerman initially tried to improve on the programming of the Mark I, but eventually decided to create the Mark II from scratch. In addition to that, new ship designs like the Prometheus-class enabled full mobility for the EMH, as the whole ship was outfitted with holographic projectors. (VOY: "Message in a Bottle")

By 2377, the Mark II had been replaced by a Mark III, followed by a Mark IV. (VOY: "Life Line")

Neither the Mark III or Mark IV programs were shown on-screen, nor was it revealed what happened to the Mark II.
The Mark II was played by Andy Dick.

EMH diagnostic program Edit

Voyager Edit

LMH Edit

Deep Space 9 Edit

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