[@Peaceless] I said it once, I will say it again - It would do you well not to assume the worst with me. 

As far as the skills of the nurse - that is not something you will have to worry about or can decide. Remember NPC's as far as skills, what they know, and what they can do is a [i]GM controlled thing[/i]. The only character any Rper has control of fully or needs to worry about the skills is their personal one. For Rpers here, NPC's only can do basically be used to add a bit quick context. (Example - hands over general equipment, stowing gear, so forth.) 

Now, what to call him - Nurse. Just an LN. No Combat Medic or EMT training or experience. So he will be able to at most provide [b]basic[/b] nursing care, monitor patient vital signs, and report changes in a patient's status to Finger.