Go to the webpages of the programs you are interested (from frieda or just google) and most will list them. The ones I know of are:
Ohio State University (1 spot)
U Penn (2 spots)
NYU-HJD (requires prior pHD or at least 1 substantial full year of research during medical school)
Penn State (they have 2 different tracks)
I'm sure there are plenty more. Good luck.
sscooterguy