When my mother was in the Akademia Medyczna hospital last year, I spoke with her doctors in English since my Polish isn't very good.
Also, when I went to the local clinic, most of the doctors spoke English.
What I would suggest is either going to one of the local clinics or one of the hospitals and ask for an English speaking doctor.
The doctors that work at the clinics and the hospitals have private practices also.
I go to the clinic because a visit costs around 3-40 PLN where you would easily pay 100PLN to the same doctor in his private practice.
If you need more help, pm me.