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Heart Care

Surgeon Profiles

St. Luke's is one of the premier hospitals in cardiovascular care with cardiothoracic surgeons Ronald Leidenfrost, MD and Jeremy Leidenfrost, MD.

Ronald D. Leidenfrost, M.D., FACS

Chief, Cardiothoracic Surgery
MD - Cum laude, Upstate Medical Center in Syracuse, New York
Barnes-Jewish Hospital
Board Certifications
Internal medicine and thoracic surgery
American College of Surgeons, American College of Chest Physicians, Society of Thoracic Surgeons and the American Medical Association.
Published Works
Annals of Surgery, American Journal of Cardiology and Southern Medical Journal.

Ronald Leidenfrost, MD, is chief of cardiothoracic surgery at St. Luke’s Hospital and chairman of it's Heart and Vascular Institute. He is a member of a highly-qualified team treating all aspects of adult heart, lung, esophageal, chest wall, and vascular surgery. 

Dr. Leidenfrost specializes in off-pump coronary artery bypass, or “beating-heart” surgery. The heart is not stopped during this procedure. Instead, special devices are used to stabilize the part of the heart that the surgeon is operating on, providing patients the benefits of reduced complications and recovery time. No other hospital in the greater St. Louis area performs as many beating-heart procedures. Dr. Leidenfrost also specializes in permanent pacemaker surgery and complex reoperative heart (CABG and valuve) surgery.


Jeremy Leidenfrost, MD

Cardiothoracic Surgery
St. Louis University
Washington University School of Medicine/Barnes-Jewish Hospital

Dr. Leidenfrost earned his medical degree from St. Louis University School of Medicine and completed his general surgery residency and cardiothoracic surgery fellowship at Washington University School of Medicine/Barnes-Jewish Hospital. Dr. Leidenfrost treats a variety of conditions relating to the heart, lungs, chest and blood vessels including coronary artery bypass and video-assisted thoracoscopic surgery.

His special interests include minimally-invasive approaches in aortic valve replacement, mitral valve repair, septal myectomy, aortic aneurysms, transcatheter aortic valve replacement (TAVR) and the Cox-Maze procedure for the treatment of atrial fibrillation.