Top programs (in no order and in my opinion and usually most other peoples):
Northwestern/RIC, UMDNJ/Kessler, Harvard/Spaulding, Mayo, Baylor, University of Washington, Ohio State, University of Michigan
Mid-tier/Close to top (lots of these):
LSU, VCU-MCV, Stanford, NYU, UVa, Emory, Penn, Columbia-Cornell, Hopkins, Wisconsin, UC-Davis, UC-Irvine, the list goes on.....
Rest:
IU, Tufts, USF, EVMS, U Kentucky, U-Louisville, Wayne State, Beaumont, Loyola, list goes on......
Disclaimer: Remember that many people choose programs based on location, spouse/couples match, and many other factors. This is just a very rough look at some general programs. ALL programs are good and will train you to be a good physiatrist. The list that I have briefly given is "what most people would condsider in terms of competitiveness of matching". By no means is the list inclusive, just to give you an idea. And please no turf wars or PM about this stuff.
Best of luck to you.