I do know of someone who graduated from my school and is a resident over there. I believe that one of my classmates, Dr. G (?), will be going there. Johns Hopkins and Sinai-Baltimore used to be a combined program. That was until, a few years ago, when Hopkins split apart from Sinai. Many people have told me that Sinai is much better than Hopkins. Hopkins' program seems to be unstable at this point. The teaching from attendings at Hopkins is minimal. From opinions that I have gotten, both Sinai and Hopkins are not as strong as they once were since they split apart. In the DC-Baltimore area, I would also check out National Rehab Hospital. Although it isn't nearly as strong as other programs in the northeast (i.e. Spaulding, Kessler, TJU, Temple, JFK), NRH seems to have tons of potential if they can improve on their outpatient and musculoskeletal rehab. Both NRH and Sinai are possibly the better of the DC-Baltimore programs. The 3 Virginia programs appear to be even stronger.
Sinai appears to have a strong outpatient rehab. Like NRH and Hopkins, they take 4 residents per year. Sinai is a community hospital compared to Hopkins.
Well, that is all that I know about Sinai.