I few years ago I did a summer course in Conway NH for a month with a company called SOLO. Really the best I could imagine. Afterwards you can get certified as a Wilderness - Emergency Medical Technician (W-EMT). After college I used the training to become an EMT/Ambulance driver in NYC, mostly the Bronx and Harlem with some southern Westchester calls.
It was a little pricy because you live there for the whole time, but I swear by the school and am sure that they courses for other seasons. It was a great all around experience.
Good luck,