Try this site, it might give you the information you need, failing that, why dont you get in touch with your own GP and ask him does he know of any surgery's that have Polish speaking GP's - You really didnt need to come to a forum, Google is your friend :0)
Dr S Wozniak Doctors (Hospitals & Medical Establishments) serving Birmingham area 61 Stevens Avenue, Birmingham, West Midlands, B32 3SD Tel: 0121-427 6174