Chelsey, my husband is a radiologist in the Navy! There is a large Navy hospital in Bethesda, MD.
Ainsleymom, I couldn't agree more -- I wish I'd chosen a job that leant itself well to part-time work, and the kind of work that when you leave, you leave it there, YKWIM? Nothing to bring home and work on after the children go to bed, no stresses or deadlines to keep you up at night. Just go in, do your hourly shift, and get paid rather well for it.
My friend is a speech therapist at a hospital and she has pretty much that.