Dr. John O. Hutto

Mark J. Krzyston, MD, is a board-certified cardiologist with decades of experience in cardiovascular medicine. He earned his medical degree from St. George's University School of Medicine in Grenada, West Indies, in 1981, following a Bachelor of Science degree from Fairfield University in North Fairfield, Connecticut. He completed his internship, residency, and cardiology fellowship at Mt. Sinai Hospital in Hartford, Connecticut. He is a Fellow of the American College of Cardiology and an active member of several professional organizations, including the American Medical Association, South Carolina Medical Association, Edisto Medical Society, American Heart Association, the American Society of Echocardiography, and the Society for Vascular Ultrasound. Dr. Krzyston is highly rated in 34 conditions, according to our data. His clinical expertise encompasses Glucocorticoid-Remediable Aldosteronism, Hypertension, Coronary Heart Disease, and Dilated Cardiomyopathy (DCM). Dr. Krzyston is currently accepting new patients.

George Castro, MD, specializes in Cardiology and is located in Orangeburg, SC. Dr. Castro is highly rated in 19 conditions, according to our data. His clinical expertise encompasses Paroxysmal Supraventricular Tachycardia (PSVT), Atrioventricular Nodal Reentrant Tachycardia (AVNRT), His Bundle Tachycardia, and Arrhythmias. Dr. Castro is currently accepting new patients.

Robert Leonardi is a Cardiologist practicing medicine in West Columbia,, South Carolina. Dr. Leonardi is highly rated in 25 conditions, according to our data. His clinical expertise encompasses Aortic Valve Stenosis, Patent Foramen Ovale, Atrial Septal Defect (ASD), Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR). Dr. Leonardi is currently accepting new patients.