Dr. Dan Vaisman

Robert Denyer is a Cardiologist practicing medicine in Georgetown,, Texas. Dr. Denyer is highly rated in 57 conditions, according to our data. His clinical expertise encompasses Coronary Heart Disease, Aortic Regurgitation, Atherosclerosis, and Glucocorticoid-Remediable Aldosteronism. Dr. Denyer is currently accepting new patients.

James Black is a Cardiologist practicing medicine in Austin, Texas. Dr. Black is highly rated in 22 conditions, according to our data. His clinical expertise encompasses Ventricular Tachycardia, Arrhythmias, Catecholaminergic Polymorphic Ventricular Tachycardia, Pacemaker Implantation, and Cardiac Ablation. Dr. Black is board certified in The American Board Of Internal Medicine - Cardiovascular Disease and The American Board Of Internal Medicine - Internal Medicine. Dr. Black is currently accepting new patients.

Dr. Caldera completed his Vascular Medicine and Interventional Cardiology Fellowship Training at Massachusetts General Hospital, Harvard Medical School, and completed his Cardiovascular Medicine Fellowship Training at Baylor College of Medicine in Houston, TX. Dr. Caldera's areas of clinical and research interest include Vascular Medicine, Interventional Cardiology, Structural and Valvular Heart Disease and Vascular Medicine. He specializes in Transcatheter Aortic Valve Replacement ( TAVR) He has several publications in peer-reviewed journals and is an active voting member of the Peripheral Arterial Disease Committee of the Society for Cardiovascular Angiography and Interventions (SCAI). Dr. Caldera has been recognized as a Top Doc 2020, 2021, 2022, 2023, 2024, and 2025 by Austin Monthly Magazine. Winners are nominated by their peers as among the best in their region/nation in their medical specialty. Dr. Caldera is highly rated in 36 conditions, according to our data. His clinical expertise encompasses Sick Sinus Syndrome, Familial Hypertension, Angina, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement. Dr. Caldera is board certified in Cardiovascular Disease- American Board Of Internal Medicine and Interventional Cardiology- American Board Of Internal Medicine. Dr. Caldera is currently accepting new patients.