Mark Piper

 was a minor character featured in the Star Trek franchise. Played by actor Paul Fix, he appeared in the second pilot episode of the original Star Trek television series, "Where No Man Has Gone Before".

Biography
Mark Piper was a member of the Starfleet Medical Corps and briefly served as the Chief Medical Officer and head of the Life Sciences Department on the USS Enterprise from 2264 to 2265 under the command of Captain James T. Kirk. He succeeded Doctor Philip Boyce and briefly replaced CMO Leonard McCoy, who was on an extended leave of absence at the time.

When the Enterprise encountered a magnetic anomaly at the edge of the Great Barrier, Doctor Piper, along with the other department heads were called to the bridge to offer their assessment. Lieutenant Commander Gary Mitchell was adversely affected by exposure to the electromagnetic radiation, which caused him to evolve, stimulating the sections of his brain that governed extrasensory perception. Doctor Piper treated him in Sick Bay and monitored his vital signs.

Piper was present at a special conference on the ship to determine what, if any, threat level Gary Mitchell's new powers might present to the crew.

Captain Kirk decided to quarantine Mitchell on the mining-world of Delta-Vega. Gary escaped however and used the power of electrokinesis to stun Kirk and his Science Officer, Mister Spock. Doctor Piper came upon them and used a stimulant to revive Kirk. The Captain asked him to hold off on reviving Mister Spock until he had a chance to deal with Mitchell.

Mark Piper retired from service and left the Enterprise shortly after the Delta-Vega mission. He was succeeded by Doctor Leonard "Bones" McCoy.

Notes & Trivia

 * The character of was created by James Goldstone and Samuel A. Peeples.