Have you heard of the U.S. Public Health Service Commissioned Corps

http://en.wikipedia.org/wiki/Uniformed_services_of_the_United_States

It seems to be a uniformed service, and be regulated by military standard (just without the armed part).

I am shocked that I have not heard about them more often. Although very different, in a few ways Coast Guard in the sense they are a not one of the traditional armed services, but are still included in that tribe. I wish I had known about them when I graduated high school. And unlike the Peace Corps, they pay.

http://www.usphs.gov/