Jon R. Resar received his M.D. from the Medical College of Wisconsin in 1985. He completed an internal medicine residency at The Johns Hopkins Hospital and fellowships in cardiovascular medicine and interventional cardiology at The Johns Hopkins Hospital and Johns Hopkins University School of Medicine. He joined the faculty at Johns Hopkins in 1992 and is currently a Professor of Medicine/Cardiology. He was the past Director of the Adult Catheterization Laboratory and Interventional Cardiology at the Johns Hopkins Hospital. His field of specialization is management of coronary artery disease and valvular heart disease. Dr. Resar holds memberships in the American Heart Association and is a Fellow of the American College of Cardiology. Dr. Resar is rated as an Elite provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Heart Attack, Atrial Septal Defect (ASD), Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

Rani Hasan is an Interventional Cardiologist in Baltimore, Maryland. Dr. Hasan is rated as a Distinguished provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Apoplexy, Heart Attack, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

"Originally from Wisconsin, Dr. Czarny attended the University of Wisconsin where he majored in molecular biology. After medical school at the Johns Hopkins University School of Medicine, he completed an internal medicine residency at the Brigham and Women’s Hospital in Boston followed by cardiovascular disease, interventional cardiology, and structural heart disease fellowships at Johns Hopkins. Currently, he is a faculty member in interventional cardiology and performs heart catheterizations and coronary artery stenting for patients with stable coronary artery disease (CAD) and myocardial infarctions (""heart attacks"") at both the Johns Hopkins Hospital and the Johns Hopkins Bayview Medical Center. He is also a member of the Structural Heart Disease team and performs minimally invasive, catheter-based treatments for structural heart disease at the Johns Hopkins Hospital including transcatheter aortic valve replacement (TAVR) for aortic valve stenosis, valve repair/replacement procedures for mitral valve regurgitation and stenosis, patent foramen ovale closure, atrial septal defect closure, alcohol septal ablation for hypertrophic cardiomyopathy, and left atrial appendage occlusion with the Watchman(TM) device. He sees patients in his structural heart disease clinics at both the Johns Hopkins Hospital and the Johns Hopkins Bayview Medical Center. Dr. Czarny's research interests include the safety of cardiac stenting at hospitals without cardiac surgery backup and outcomes of catheter-based structural heart procedures.". Dr. Czarny is rated as a Distinguished provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Apoplexy, Heart Attack, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

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 Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Mediastinitis, Cystic Medial Necrosis of Aorta, Heart Bypass Surgery, and Aortic Valve Replacement.

Seyed Aalaei is a Cardiologist in Baltimore, Maryland. Dr. Aalaei is rated as a Distinguished provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Regurgitation, Aortic Valve Stenosis, Bicuspid Aortic Valve, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

Jelani Grant is a Cardiologist in Baltimore, Maryland. Dr. Grant is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Heart Failure, Atherosclerosis, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

Jennifer S. Lawton, M.D., is the Richard Bennett Darnall Professor of Surgery and chief of the Johns Hopkins Division of Cardiac Surgery, as well as director of the Cardiac Surgery Research Laboratory. Dr. Lawton’s clinical area of focus is adult cardiac surgery. She also leads the division’s residency education program, and conduct research in myocyte volume regulation and ATP-sensitive K channels. She has held important leadership roles in several organizations, including chair of the surgery study section of the American Heart Association, vice-chair of the ACGME residency review committee, and president of the Women in Thoracic Surgery. Lawton’s achievements also include 81 peer-review publications, 7 book chapters, and 18 abstracts. She has delivered over 50 invited lectures. Dr. Lawton is rated as an Advanced provider by MediFind in Aortic Valve Replacement. Her top areas of expertise are Heart Tumor, Aortic Dissection, Atrial Myxoma, Heart Bypass Surgery, and Coronary Artery Bypass Graft (CABG).

Hamza Aziz’s clinical expertise includes general cardiac surgery, heart bypass operations, aneurysmal dilation, catheter-based technology to treat stenotic or narrowed aortic valves and transcatheter aortic valve replacement (TAVR). His research interests include genetic causes of abnormal valve development and aneurysm, Dr. Aziz is published in the fields of cardiac surgery, thoracic surgery, pediatric cardiac surgery and breast cancer surgery. Dr. Aziz is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Bicuspid Aortic Valve, Collapsed Lung, Heart Bypass Surgery, and Aortic Valve Replacement.

"Greg Kumkumian, M.D., F.A.C.C., received his medical degree from The George Washington University School of Medicine. Dr. Kumkumian is currently the Medical Director in the Cardiac Catheterization Laboratory at Suburban Hospital. His special interests include general and preventive cardiology, interventional cardiology and peripheral vascular diseases, venous diseases and peripheral interventions. Dr. Kumkumian has been recognized as one of the area's ""Top Doctors"" several times by Washingtonian magazine.". Dr. Kumkumian is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Heart Attack, Angina, Aortic Valve Stenosis, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

Karan Rao is an Interventional Radiologist in Baltimore, Maryland. Dr. Rao is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Testicular Torsion, Stroke, Osteoarthritis, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Duke Cameron, M.D. is a cardiothoracic surgeon in Baltimore, MD. He is a professor of surgery at the Johns Hopkins School of Medicine. Dr. Cameron is world-renowned for his expertise in the surgical repair of the aorta. He is internationally recognized for his contributions to cardiac surgery, particularly aortic surgery for Marfan syndrome, Loeys-Dietz syndrome and other connective tissue disorders. He also specializes in mitral valve repair and adult congenital heart disease. His multiple academic contributions span the breadth of pediatric and adult cardiac surgery. Dr. Cameron is a graduate of Harvard College and Yale Medical School. He completed his general surgery training at Yale-New Haven Hospital and his cardiothoracic fellowship training at the Johns Hopkins Hospital. After his training, he remained on the faculty at Johns Hopkins. Dr. Cameron most recently served on staff at Massachusetts General Hospital before returning to Johns Hopkins. Dr. Cameron is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Dissection, Cystic Medial Necrosis of Aorta, Thoracic Aortic Aneurysm, Patent Foramen Ovale Repair, and Heart Valve Repair.

Mark Nelson, MD, specializes in cardiothoracic surgery and is board certified in thoracic and cardiac surgery by the American Board of Thoracic Surgery. He practices at UPMC Heart and Vascular Institute and is affiliated with UPMC Shadyside and UPMC Presbyterian. Dr. Nelson completed his fellowship and residency at West Virginia University School of Medicine and medical education at University of Maryland School of Medicine. Dr. Nelson is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Thoracic Aortic Aneurysm, Carotid Artery Disease, Abdominal Aortic Aneurysm (AAA), Carotid Artery Surgery, and Heart Bypass Surgery.

Bartley Griffith is a Thoracic Surgeon in Baltimore, Maryland. Dr. Griffith is rated as a Distinguished provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Hemolysis, Aortic Valve Stenosis, Aortic Regurgitation, Embolectomy, and Aortic Valve Replacement.

Brian Bethea is a Thoracic Surgeon in Baltimore, Maryland. Dr. Bethea is rated as a Distinguished provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Mitral Valve Regurgitation, Aortic Valve Stenosis, Mitral Stenosis, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

John Wang is a Cardiologist in Baltimore,, Maryland. Dr. Wang is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Apoplexy, Heart Attack, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

Diljon Chahal is a Cardiologist in Baltimore,, Maryland. Dr. Chahal is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Apoplexy, Heart Attack, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Michael Fiocco, MD, specializes in cardiothoracic surgery and is board-certified by the American Board of Thoracic Surgery. Dr. Fiocco received his medical degree from Ross University School of Medicine and completed his residency at Ascension Saint Agnes Hospital, followed by a fellowship at the University of Maryland Medical Center. Dr. Fiocco is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Bicuspid Aortic Valve, Aortic Regurgitation, Aortic Valve Stenosis, Heart Bypass Surgery, and Heart Valve Repair.

Fayaz Shawl is a Cardiologist in Silver Spring, Maryland. Dr. Shawl is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Angina, Coronary Heart Disease, Atherosclerosis, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Anuj Gupta is a Cardiologist in Baltimore,, Maryland. Dr. Gupta is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Aortic Valve Stenosis, Cardiogenic Shock, Pulmonary Veno-Occlusive Disease, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Robert Hood is a Cardiologist in Baltimore,, Maryland. Dr. Hood is rated as an Advanced provider by MediFind in Aortic Valve Replacement. His top areas of expertise are Familial Ventricular Tachycardia, Necrosis, Mitral Valve Regurgitation, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.