Smitha Bullock, MD

Mohammad F. Mathbout, M.D., is an interventional cardiologist with Norton Heart & Vascular Institute. He earned his medical degree from Alfaisal University College of Medicine, Riyadh, Saudi Arabia, and completed his residency in internal medicine at the University of Kentucky College of Medicine, Lexington. He completed a fellowship in cardiovascular diseases at the University of Louisville School of Medicine, Kentucky, and a fellowship in interventional cardiology at the Medical University of South Carolina, Charleston. Dr. Mathbout is board certified in internal medicine, cardiovascular medicine, interventional cardiology, echocardiography and nuclear medicine. His special interests include intravascular imaging, high-risk/complex coronary interventions and mechanical circulatory support. He works closely with his patients to provide tailored care. When away from work, Dr. Mathbout enjoys spending time outdoors, hiking and playing chess.

Mary Killian, M.D., is a pediatric cardiologist with Norton Children’s Heart Institute, affiliated with the UofL School of Medicine. She earned her medical degree from the University of Kentucky College of Medicine in Lexington. Dr. Killian completed her residency in pediatrics and a fellowship in pediatric cardiology at Vanderbilt University Medical Center in Nashville, Tennessee. She specializes in treating children with structural and functional heart disease and is dedicated to providing the best possible care for her young patients and their families. Outside of work, Dr. Killian enjoys spending time with her family and dog.

Walter Sobczyk is an associate professor of pediatrics at the University of Louisville School of Medicine.Dr. Sobczyk has participated in numerous research studies and his work has been published in journals such as The Journal of Invasive Cardiology, the Annals of Thoracic Surgery and the Journal of the Kentucky Medical Association. He also has been a presenter and speaker on the subjects of pediatric cardiology, adult congenital heart disease, and obesity at regional and national conferences.Dr. Sobczyk earned his medical degree from the University of Nebraska College of Medicine in Omaha where he also completed his internship, residency and a one-year fellowship in cardiovascular pathology. He also completed a three-year fellowship in pediatric cardiology at Children's Hospital Medical Center in Cincinnati.