Dr. Grunewald's areas of expertise consist of lung cancer, heart valve disease, and heart bypass surgery (CABG). United Healthcare Platinum, United Healthcare Navigate, and Coventry are among the insurance carriers that Dr. Grunewald honors. He attended Michigan State University College of Human Medicine and then went on to complete his residency at Christiana Care Health System and Jefferson University Hospitals. Dr. Grunewald has received distinctions including "Top Docs" in Cardiology, Main Line Today; "Top Doctors" in Thoracic and Cardiac Surgery; and Philadelphia magazine. Dr. Grunewald (or staff) is conversant in Spanish, German, and Portuguese. He is affiliated with Crozer-Keystone Health System.