It probably is, though the focus is of course on the obscure and unusual.
The most likely thing you'll encounter in medicine is a common presentation of a common illness, and the next most likely is an uncommon presentation of a common illness. We do see weird things, but they're rare and to get there we need to rule out the common stuff first.
I always found the most accurate portrayal of medicine was Scrubs, more for the working environment than for the medicine itself.
If you're interested in accurate, fascinating medical detective stories, you might check out the wonderful books by Berton Roueche.