Dr. Ast's practice, Cardiology Diagnostics, is part of BJC Medical Group of Missouri, a well-established, multi-specialty physician group. His special interests include echocardiography, TEE (Trans Esophageal Echo), permanent pacemaker insertion and nuclear cardiology. Dr. Ast is a Fellow in the American College of Cardiology. He has is past Chief of Staff at Barnes-Jewish St. Peters Hospital in addition to his current role on the physicians' Credential Committee. Dr. Ast requires a referral from your primary care physician before scheduling an appointment.