J. Peyser was a member of Starfleet in the 22nd century.
In January of 2155, Peyser worked in EECOM at the Fleet Operations Center on Earth. Peyser's office was located in room 3465. (ENT: "Demons" set artwork)
Peyser's name was seen on directory listings seen on the set of "Demons".
J. Peyser was named after Enterprise special effects artist John Peyser.