There's a prominent physician working at a hospital in Delaware who has been conducting research on low-carb diets with diabetics and heart patients. Some of his work has been featured on this site.

http://forum.lowcarber.org/showthre...&highlight=Hays
http://www.pslgroup.com/dg/10786a.htm

Turns out, he's an avid low-carber himself. He was featured in the following article.

http://www.philly.com/mld/philly/li...lth/7546269.htm

It seems that physicians with an open mind are getting it.