Polish internist in Greenpoint — examinations, prevention, care Regular check-ups can detect a problem before it becomes serious — but this requires a doctor who will take the time to talk. Dr. Edward Celmer, a graduate of the Medical Academy in Wrocław, has been running an internal medicine practice in Brooklyn at 146 Norman Ave for over 40 years. He specializes in internal medicine: diabetes, hypertension, prevention. He sees patients in Polish, English, and Spanish.