Penn Cardiac Care at Mercy is a proud part of the Mercy Physician Network, a member of Mercy Health System. Alan S. Moak, MD, Steven J. Weiss, MD, and Robert K. Wenger, MD offer the highest quality health & medical services to our patients, practicing medicine in the specialty areas of:* Cardiology* Cardiothoracic Surgery* Cardiovascular Disease* Heart Care* Interventional CardiologyPlease call...