All Local in City of Berlin, Green Lake CountyHome / Local Medical Practices & Physicians > Sort By Date Added to WeencePractice Name View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Patrick D. O’Brien, MDPatrick D. O’Brien, MD is a Cardiologist in Berlin, Wisconsin in good standing. Please leave a review of Patrick D. O’Brien, MD if you have been a patient of Patrick D. O’Brien, MD. Patrick D. O’Brien, MD, please claim yourType: Local and PhysicianPhone: (920) 730-6700Leave a Google Review No Reviews