- You might also be looking for Ensign John Nesterowicz.
John Nesterowicz was a member of Starfleet in the 24th century.
As a captain, he was listed as Starfleet Academy personnel on the dedication plaque of the USS Brattain in 2345. (TNG: "Night Terrors")
In 2353, Nesterowicz was listed on a directory placard as having an office in room 75274 on Starbase 32. (TNG: "Violations")
Nesterowicz was listed as Starfleet Tactical personnel on the plaque of the USS Pasteur. (TNG: "All Good Things...")