Over the years I have taught scores, if not hundreds, of doctors and medical professionals learn to play the piano better. Many of them play jazz, and often not just for their own amusement, but they form combos and play weekends at resturants and clubs and rest homes and rec centers and you name it.
I don't know what the connection is -- maybe they just need a release from what they do all week long -- but it seems to happen again and again.
I don't often plug other people's courses, but I came across a young med student who is also a terrific jazz pianist, and he has come out with a course on playing jazz piano. His name is James Wrubel. Check it out at "How To Play Jazz Piano".
And even if jazz isn't your favorite style, you can still learn a LOT that will help you as you play songs in your style.