There is about 8 or more schools in Poland that teach in english. Im an american that moved to Poland. Last year's graduating class in Krakow 4yr program. Got matched in vermont, Rochester, Boston, Miami, Chicago, minneapolis, and 2 canadian got back to canada which is almost near impossible. The specialties ranged from internal medicine, neurology, surgery, psychiatry, pediatrics, family med, and phys med and rehab.
So if your going to go to an eastern country, Poland would be your best bet.
Probably the top schools in Poland
Jagellionian University, Krakow (my school...but im not biased in that decision)
Poznan University of Medical Sciences, Poznan
Medical University of Warsaw (MUW)