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 a Distinguished provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Aortic Valve Stenosis, Heart Attack, Atrial Septal Defect (ASD), Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

Nicholas Pietris is a Pediatric Cardiologist in Baltimore,, Maryland. Dr. Pietris is rated as an Advanced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Patent Ductus Arteriosus, Atrial Septal Defect (ASD), Patent Foramen Ovale, and Ventricular Septal Defects.

Robert Zawodny is a Cardiologist in Nottingham, Maryland. Dr. Zawodny is rated as an Advanced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Cardiomyopathy, and Angina.

Michael Drossner is a Cardiologist in Bel Air,, Maryland. Dr. Drossner is rated as an Advanced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Coronary Heart Disease, Angina, Heart Attack, Dilated Cardiomyopathy (DCM), and Angioplasty.

Michael Lee is a Cardiologist in Olney,, Maryland. Dr. Lee is rated as an Advanced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Carotid Artery Disease, Hypertension, Pulmonary Hypertension, and Arterial Embolism.

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

Dr. Ari Cedars is a cardiologist in Baltimore, Maryland. He also serves as director of the Adult Congenital Heart Disease Center at both the Johns Hopkins Heart and Vascular Institute and the Blalock-Taussig-Thomas Pediatric and Congenital Heart Center. Dr. Cedars is an associate professor of medicine and pediatrics at the Johns Hopkins University School of Medicine. Dr. Cedars specializes in adult congenital heart disease. He is a member of the leadership committee for the Advanced Cardiac Therapies Improving Outcomes Network (ACTION), an organization focused on the improvement of outcomes for pediatric ventricular assist device (VAD) patients. He is an administrative board member of the Alliance for Adult Research in Congenital Cardiology (AARCC), a multi-institutional academic research network devoted to producing new research in adult congenital heart disease. He is also a member of the medical advisory board for the Adult Congenital Heart Association (ACHA). Dr. Cedars’ research focuses on patient-centered outcomes, mechanical circulatory support and ventricular assist devices, and the biological mechanisms underlying clinical disease progression in congenital heart disease. Dr. Cedars is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Congenital Heart Disease (CHD), Tetralogy of Fallot, Heart Attack, Apoplexy, and Heart Transplant.

Dr. Katherine Wu is a general cardiologist for the Heart and Vascular Institute at Johns Hopkins Medicine with an interest in caring for patients with cardiomyopathies, coronary artery disease, and valvular heart disease as well as those interested in cardiovascular prevention. She has additional expertise in non-invasive cardiology imaging techniques. Dr. Wu received her medical degree from the University of Pennsylvania Health System School of Medicine, and completed her residency and a cardiology fellowship at the Johns Hopkins University School of Medicine. She joined the School of Medicine faculty in 2000. Dr. Wu's research interests include improving individualized risk prediction for sudden cardiac death and heart failure by developing and validating methods that incorporate novel cardiac imaging indices. Her lab is funded by the NIH/NHLBI. Dr. Wu has more than 70 peer-reviewed publications and serves on the editorial board of the Journal of Cardiovascular Magnetic Resonance and Circulation Cardiovascular Imaging and is a standing member of the NIH Clinical and Integrative Cardiovascular Sciences Study Section. Dr. Wu is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. Her top areas of expertise are Cardiomyopathy, Atrial Fibrillation, Heart Attack, and Pulmonary Hypertension.

Dr. David Douglass Spragg is a Professor of Medicine in the Department of Medicine (Division of Cardiology) at Johns Hopkins. In addition, he is the inaugural Edward St. John Professor of Cardiology. His research focuses on treatments for atrial fibrillation (AF), and particularly on catheter ablation for AF. Dr. Spragg received his undergraduate degree in the Comparative Study of Religion from Harvard College. He earned his medical degree from the College of Physicians and Surgeons at Columbia University. After pursuing a Sarnoff Cardiovascular research fellowship at Brigham and Women's Hospital, Dr. Spragg completed his internship and residency at Massachusetts General Hospital. He came to Johns Hopkins in 2001 for Cardiology and Cardiac EP fellowships. He served as chief fellow for the Cardiology program, and was recognized for his research during fellowship as the Michel Mirowski Cardiology Fellow. Dr. Spragg joined the faculty as an Assistant Professor in 2006, and was promoted to Associate Professor in 2014. He was promoted to the rank of Professor of Medicine in 2024. Besides his teaching and clinical appointments at the Johns Hopkins School of Medicine, Dr. Spragg is the Director of the Johns Hopkins Atrial Fibrillation Research Program. He is a Fellow of the Heart Rhythm Society. Dr. Spragg is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Cardiac Tamponade, Cardiac Ablation, and Pacemaker Implantation.

Joseph Marine, MD, MBA, FACC, FHRS, is a clinical cardiac electrophysiologist who practices primarily at the Johns Hopkins Hospital in Baltimore, Maryland. He is a Professor of Medicine at the Johns Hopkins University School of Medicine and holds appointments as Vice-Director of Operations for the Division of Cardiology and Section Chief of Cardiology for Johns Hopkins Community Physicians. He trained at UC San Francisco Medical School, Brigham and Women’s Hospital/Harvard Medical School, Boston University Medical Center, and Beth Israel Deaconess Medical Center. Dr. Marine has lectured widely on a variety of arrhythmia topics and has served as a co-director of the American College of Cardiology (ACC) Cardiovascular Overview and Board Review Course for 10 years. He currently serves on the ACC Board of Governors and is co-editor of the ACC/HRS EP Self-Assessment Program. He also serves on other committees for the ACC, the Heart Rhythm Society, and MedChi. He is co-author of more than 130 original research and review articles and has served on writing committees for several national cardiology practice and training guidelines. As a clinical cardiac electrophysiologist, Dr. Marine specializes in the diagnosis and treatment of arrhythmias, which are heart rhythm disorders that cause the heart to beat too rapidly, too slowly, or irregularly. His research focuses on further improving the safety and effectiveness of catheter ablation and other treatments for atrial fibrillation and other atrial and ventricular arrhythmias. Dr. Marine is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Atrial Fibrillation, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Arrhythmias, Cardiac Ablation, and Heart Transplant.

Dr. John D. Coulson is an assistant professor of pediatrics at the Johns Hopkins University School of Medicine. His area of clinical expertise is pediatric cardiology. He earned his M.D. at University of Michigan Medical School. He completed his medical training and a pediatrics residency at Stanford University Medical Center before training in naval flight surgery at the Naval Aerospace Medical Institute. He then completed fellowships in pediatric cardiology and developmental biology at Stanford. He also served as a medical officer for the U.S. Navy for nine years. Dr. Coulson was an honorary member of the Russian Scientific Society of Interventional Radiology and Endovascular Surgery in 2001. He has published a number of journal articles and co-authored several book chapters related to pediatric cardiology. Dr. Coulson is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Pulmonary Hypertension, Pediatric Myocarditis, Hypertension, and Tetralogy of Fallot.

Alicia Chaves is a Pediatric Cardiologist in Baltimore,, Maryland. Dr. Chaves is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. Her top areas of expertise are Patent Ductus Arteriosus, Ventricular Septal Defects, Sinus of Valsalva Aneurysm, Pulmonary Atresia, and Gastrostomy.

Erika Feller is a Cardiologist in Bel Air,, Maryland. Dr. Feller is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. Her top areas of expertise are Cardiomyopathy, Dilated Cardiomyopathy (DCM), Heart Failure, Heart Transplant, and Cardiac Ablation.

Robert Marshall is a Cardiologist in Chevy Chase, Maryland. Dr. Marshall is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Atherosclerosis, Angina, Coronary Heart Disease, Heart Attack, and Pacemaker Implantation.

Aimee Park is a Cardiologist in Frederick,, Maryland. Dr. Park is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. Her top areas of expertise are Sitosterolemia, Atherosclerosis, Coronary Heart Disease, and High Cholesterol.

Tiffini Lucas is a primary care provider, practicing in Family Medicine in Bethesda, Maryland. Dr. Lucas is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. Her top areas of expertise are Autoimmune Polyendocrinopathy-Candidiasis-Ectodermal Dystrophy (APECED), IPEX Syndrome, Autoimmune Polyglandular Syndrome Type 2, and Chronic Inflammatory Demyelinating Polyneuropathy. Dr. Lucas is currently accepting new patients.

Dr. Flyer has been practicing cardiology since 1997. He specializes in interventional cardiology, the branch of cardiology that uses catheter-based technology to treat heart disorders. Dr.Flyer also practices general cardiology, and has expertise in echocardiography and nuclear cardiology. He is a Clinical Assistant Professor at George Washington University School of Medicine, teaching medical students cardiology. In 2008, Dr. Flyer began serving as the Vice Chairman of the American Heart Association Gala Committee. Dr. Flyer currently has privileges at the following hospitals: Suburban Hospital, Bethesda, Maryland Sibley Memorial Hospital, Washington, D.C. The Washington Hospital Center, Washington, D.C. Holy Cross Hospital, Silver Spring, Maryland Washington County Hospital, Hagerstown, Maryland. Dr. Flyer is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Mitral Valve Prolapse, Coronary Heart Disease, Atherosclerosis, Atrial Fibrillation, and Pacemaker Implantation.

Mary Elfrey is a Cardiologist in Baltimore,, Maryland. Dr. Elfrey is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. Her top areas of expertise are Arrhythmias, Partial Atrioventricular Canal, Atrioventricular Septal Defect, Pacemaker Implantation, and Cardiac Ablation.

Viral Sheth is a Cardiologist in Chevy Chase,, Maryland. Dr. Sheth is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Coronary Artery Spasm, Prinzmetal's Variant Angina, High Cholesterol, and Hypertension.