Niv Ad is a Thoracic Surgeon in Takoma Park, Maryland. Dr. Ad is rated as an Elite provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Mitral Valve Regurgitation, Aortic Valve Stenosis, Hypertrophic Cardiomyopathy (HCM), Heart Bypass Surgery, and Coronary Artery Bypass Graft (CABG).

Dr. Gregory D. Trachiotis is a thoracic surgeon at Sibley Memorial Hospital, as well as a professor of surgery and chief of cardiothoracic surgery at George Washington University Medical Center. He is also the chief of cardiac surgery at the Veterans Affairs Medical Center. Dr. Trachiotis practices out of MFA CardioThoracic Surgery in Washington, D.C. He is affiliated with Sibley Memorial Hospital, Washington D.C. Veterans Affairs Medical Center and George Washington University Hospital. His clinical interests include end-stage heart and lung disease, video-assisted thoracic surgery, lung cancer, coronary artery disease, aortic valvular disease, mitral valve disorders, off-bypass coronary revascularization, mini-pump technology, surgery for heart failure, mechanical assist devices, esophageal cancer, motility disorders and transcatheter valve replacement. Dr. Trachiotis earned his medical degree from George Washington University School of Medicine, where he went on to complete residencies in cardiovascular and thoracic surgery. He earned the positions of chief resident and instructor of surgery at George Washington University, as well as chief resident of vascular surgery at the Veterans Affairs Medical Center. Dr. Trachiotis also completed a fellowship in heart and lung transplant surgery at Emory University and affiliated hospitals in Atlanta, Ga. Dr. Trachiotis is a fellow of the American College of Surgeons and is a member of various professional organizations, including the American Association for Thoracic Surgery, the Society of Thoracic Surgeons, the International Society of Heart and Lung Transplantation, the American Heart Association Council on Cardiothoracic and Vascular Surgery and the American College of Chest Physicians. Dr. Trachiotis has earned numerous awards, including being named a Top Doctor and Top Cardiothoracic Surgeon by Washingtonian Magazine and a Regional Top Doctor by Castle Connolly. He has also earned the Outstanding Chief of Surgery Resident Award from George Washington University; the Chest Foundation’s American College of Chest Physicians Young Investigator Award; and the Alley-Sheridan Scholar Harvard Health Policy and Secretary of Veterans Health Affairs Hand and Heart Award. Dr. Trachiotis has contributed to numerous clinical trials, publications and presentations. He runs a cardiothoracic surgery clinical research program for surgical residents from Georgetown University and George Washington University. Dr. Trachiotis' research interests include outcome analysis utilizing cardiac imaging for identifying prognostic risk factors in cardiac surgery; AIDS-related thoracic and cardiac disease; cardiovascular disease in sleep apnea and right heart dysfunction; donor heart and lung preservation; imaging and revascularization for LV dysfunction and valvular heart surgery; and cancer and tumor markers in esophageal and lung cancer. Dr. Trachiotis is rated as a Distinguished provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Lung Cancer, Pleuropulmonary Blastoma, Non-Small Cell Lung Cancer (NSCLC), Coronary Artery Bypass Graft (CABG), and Heart Bypass Surgery.

Steven Boyce is a Thoracic Surgeon in Washington, Washington, D.c.. Dr. Boyce is rated as a Distinguished provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Arterial Embolism, Aortic Valve Stenosis, Cardiogenic Shock, Heart Bypass Surgery, and Coronary Artery Bypass Graft (CABG).

Ron Waksman is an Internal Medicine provider in Washington, Washington, D.c.. Dr. Waksman is rated as a Distinguished provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Aortic Valve Stenosis, Coronary Heart Disease, Heart Attack, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

William Weintraub is a Cardiologist in Washington,, Washington, D.c.. Dr. Weintraub is rated as a Distinguished provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Coronary Heart Disease, Angina, Acute Coronary Syndrome, Percutaneous Coronary Intervention (PCI), and Heart Bypass Surgery.

Christian Shults is a General Surgeon in Washington, Washington, D.c.. Dr. Shults is rated as a Distinguished provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Aortic Valve Stenosis, Thoracic Aortic Aneurysm, Aortic Dissection, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

Jeffrey Cohen is a Thoracic Surgeon and a General Surgeon in Washington, Washington, D.c.. Dr. Cohen has been practicing medicine for over 17 years and is rated as a Distinguished provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Aortic Valve Stenosis, Aortic Dissection, Cystic Medial Necrosis of Aorta, Heart Bypass Surgery, and Transcatheter Aortic Valve Replacement (TAVR).

Alan Speir is a Thoracic Surgeon in Fairfax, Virginia. Dr. Speir is rated as an Elite provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Thoracic Aortic Aneurysm, Aortic Dissection, Cystic Medial Necrosis of Aorta, Coronary Artery Bypass Graft (CABG), and Heart Bypass Surgery.

William Suddath is a Cardiologist in Washington,, Washington, D.c.. Dr. Suddath is rated as an Advanced provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Heart Attack, Apoplexy, Coronary Heart Disease, Percutaneous Coronary Intervention (PCI), and Aortic Valve Replacement.

Reed Donaldson Quinn, M.D., is a cardiothoracic surgeon in Bethesda, Maryland, at Suburban Hospital. Dr. Quinn has extensive experience in the treatment of adult and congenital heart disease. He has clinical expertise in structural heart procedures including aortic, mitral, tricuspid, and pulmonary valve repairs and replacements. He also has extensive experience in aortic-mitral curtain reconstructions, percutaneous aortic valve replacement (TAVR), and LVOT enlargements. Dr. Quinn earned his Bachelor of Science Degree from Brigham Young University, his Masters in Engineering and Bioengineering from University of Utah, and his Medical Degree from University of Utah. He completed general surgery residency at University of Rochester and cardiothoracic surgery residency at The Milton S. Hershey Medical Center. Additionally, he completed a fellowship in pediatric congenital cardiovascular surgery at Children’s Hospital in Boston. Dr. Quinn has interests in innovative therapies for valvular heart disease and serves as the US Master Proctor for the Corcym Perceval sutureless valve. He has been the principal investigator at Maine Medical Center for several clinical studies. Dr. Quinn is very active in international health and has led trips for teaching and performing congenital heart surgery in Kenya, and is a visiting professor at Tenwek Hospital in Bomet, Kenya. Recent News Articles and Media Coverage At Suburban Hospital, Cardiac Surgery Expertise ShinesJohns Hopkins Medicine (March 2025). Dr. Quinn is rated as a Distinguished provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Aortic Valve Stenosis, Mediastinitis, Cystic Medial Necrosis of Aorta, Heart Bypass Surgery, and Aortic Valve Replacement.

Deyanira J Prastein is a Thoracic Surgeon in Washington, Washington, D.c.. Dr. J Prastein is rated as an Advanced provider by MediFind in Heart Bypass Surgery. Her top areas of expertise are Aortic Valve Stenosis, Aortic Dissection, Thoracic Aortic Aneurysm, Coronary Artery Bypass Graft (CABG), and Heart Bypass Surgery.

Ammar Bafi is a Thoracic Surgeon in Washington, Washington, D.c.. Dr. Bafi is rated as an Advanced provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Mitral Valve Regurgitation, Mitral Stenosis, Aortic Valve Stenosis, Heart Bypass Surgery, and Heart Valve Repair.

Lowell Satler is a Cardiologist in Washington, Washington, D.c.. Dr. Satler is rated as an Advanced provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Aortic Valve Stenosis, Aortic Regurgitation, Heart Attack, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Thomas Macgillivray is a Thoracic Surgeon in Washington, Washington, D.c.. Dr. Macgillivray is rated as an Advanced provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Heart Tumor, Aortic Valve Stenosis, Pulmonary Fibrosis, Heart Transplant, and Aortic Valve Replacement.

Gaby Weissman is a Cardiologist in Washington,, Washington, D.c.. Dr. Weissman is rated as an Advanced provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Aortic Valve Stenosis, Cardiomyopathy, Heart Attack, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Augusto Pichard is an Interventional Cardiologist and a Cardiologist in Washington, Washington, D.c.. Dr. Pichard is rated as an Advanced provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Aortic Valve Stenosis, Aortic Regurgitation, Heart Attack, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

Keki Balsara is a Thoracic Surgeon and a General Surgeon in Washington, Washington, D.c.. Dr. Balsara is rated as an Advanced provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Cardiogenic Shock, Endocarditis, Infective Endocarditis, Heart Transplant, and Lung Transplant.

Jennifer Ellis is a Thoracic Surgeon in Washington, Washington, D.c.. Dr. Ellis is rated as an Advanced provider by MediFind in Heart Bypass Surgery. Her top areas of expertise are Atrial Myxoma, Heart Tumor, Cystic Medial Necrosis of Aorta, Heart Bypass Surgery, and Patent Foramen Ovale Repair.

Thomas Matthew is a Cardiologist in Bethesda,, Maryland. Dr. Matthew is rated as a Distinguished provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Thoracic Aortic Aneurysm, Aortic Valve Stenosis, Abdominal Aortic Aneurysm (AAA), Heart Bypass Surgery, and Heart Valve Repair.

Michael Greenberg is a Cardiologist in Washington, Washington, D.c.. Dr. Greenberg is rated as an Experienced provider by MediFind in Heart Bypass Surgery. His top areas of expertise are Pediatric Myocarditis, Necrosis, Aortic Regurgitation, Coronary Artery Bypass Graft (CABG), and Heart Bypass Surgery.