Welcome! There isn't a 501st approved "Stormtrooper Medic" but I'm not sure of all the variations on the Clone side of the house. Here you have four variations from the original trilogy (ANH Stunt, ANH Hereo, ESB, ROTJ) and five approved EU (INC, TKC, HWT, Sky Trooper, and Death Trooper). Currently being researched/considered are Phase III, Kashyyk Trooper, and Legacy (Joker Squad). Besides if your armor is designed to ensure a stubbed toe kills you why have medics?