Yeah, not a bad idea. And since the medical field is suppose to be sworn to secrecy and privacy, you don't really need to worry about being out in public and having the nurse let the cat out of the bag. If you caught wind of it, they could be fired immediately. Plus, the medical field sees so many people, they probably wouldn't really recognize you, nor would they come up and say "oh, how is your _____ problem doing?".