Depends on where you live. If it were me, I'd start with doctors who are actively involved with Joslin, or with a research-oriented teaching hospital like Mass

Depends on where you live. If it were me, I'd start with doctors who are actively involved with Joslin, or with a research-oriented teaching hospital like Mass. General. If you don't live close to a city with one of those, I'm not sure what your best options would be. If it's a huge deal, you might consider establishing a relationship with a specialist who you have to travel a long distance to visit, or even consider relocating. EDIT: It's also been my experience that the occasional clinical endocrinologist NOT affiliated with a research / teaching hospital stays on top of current research. If your GP has been in working locally for a while, he/she may know which local endocrinologists are the sharpest, and may trust you well enough to make a few recommendations. Also, I'm not sure if this is just an anomaly, but I've found that the local endocrinologists who immigrated from Poland are really on top of things.