Karen Tracy, a medical technician in 2267.
A Medical technician is a specialist who performs technical assignments in a medical field, usually in a medical facility such as sickbay.
Lieutenant Karen Tracy was one of the several medical technicians serving aboard the starship Enterprise prior to her death in 2267. (TOS: "Wolf in the Fold")
Crewman Simon Tarses was serving as a medical technician aboard the Enterprise-D in 2367 prior to his discharge from Starfleet. (TNG: "The Drumhead")