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).

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. 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.

Degrees: BS: Massachusetts Institute of Technology 1981 Electrical Engineering MS: Massachusetts Institute of Technology 1983 Electrical Engineering PhD: Massachusetts Institute of Technology 1987 Electrical Engineering MD: Harvard 1987 Medicine Professional Appointments: 1987-1988 Intern in Medicine, Brigham and Women's Hospital 1988-1990 Resident in Medicine, Brigham and Women's Hospital 1988-1990 Research Scientist, Harvard M.I.T. Division of H.S.T. 1990-1993 Fellow in Cardiology, Johns Hopkins University 1993-1998 Assistant Professor of Medicine, Johns Hopkins University 1996- Co-Director of Cardiac Electrophysiology, Johns Hopkins Hospital 1998-2005 Associate Professor of Medicine, Johns Hopkins University 2002-2005 Associate Professor of Biomedical Engineering, Johns Hopkins University 2005- Professor of Medicine, Johns Hopkins University 2005- Professor of Biomedical Engineering, Johns Hopkins University. Dr. Berger is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Ventricular Tachycardia, Cardiac Ablation, and Pacemaker Implantation.

Dr. Hugh Calkins is the Catherine Ellen Poindexter Professor of Cardiology and Director of the Electrophysiology Laboratory and Arrhythmia Service at the Johns Hopkins Hospital. He is an internationally recognized expert on catheter ablation, atrial fibrillation, syncope, arrhythmogenic right ventricular dysplasia (ARVD) and arrhythmia management. Dr. Calkins attended Williams College and Harvard Medical School before training in medicine at Massachusetts General Hospital. He received his cardiology training at Johns Hopkins. His first faculty position was at the University of Michigan, where he directed the Pacemaker Service, and he returned to Johns Hopkins as director of the Arrhythmia Service in 1992. Dr. Calkins is an Associate Editor of the Journal of Cardiovascular Electrophysiology and is on the editorial board of many other cardiology journals. He is a former member of the American Board of Internal Medicine Electrophysiology Boards Test Writing Committee. Dr. Calkins is a fellow of the American College of Cardiology, the American Heart Association and the Heart Rhythm Society. He led a 44-member international task force whose 2012 Expert Consensus Statement gave recommendations for treatment and research of atrial fibrillation. Dr Calkins is a past president of the Heart Rhythm Society and was elected to be a member of the Miler Coulsen Academy of Clinical Excellence in 2014. Dr. Calkins has published more than 500 articles and book chapters on a large variety of cardiac arrhythmias. His research has focused predominantly on catheter ablation, atrial fibrillation, syncope, and arrhythmogenic right ventricular dysplasia. Dr. Calkins has also written extensively on most aspects of heart rhythm disorders and their treatment. Dr. Calkins is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Cardiomyopathy, Cardiac Ablation, and Heart Transplant.

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.

Stephen Gottlieb is a Cardiologist in Baltimore,, Maryland. Dr. Gottlieb is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Heart Failure, Cardiomyopathy, Apoplexy, 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.

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.

Mark Applefeld is a Cardiologist in Baltimore,, Maryland. Dr. Applefeld is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Coronary Heart Disease, Angina, Cardiomyopathy, and High Cholesterol.

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.

Rachel Moore is a Pediatric Cardiologist in Baltimore,, Maryland. Dr. Moore is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. Her top areas of expertise are Heart Murmurs, Ventricular Septal Defects, Patent Foramen Ovale, and Atrial Septal Defect (ASD).

Peter Gaskin is a Pediatric Cardiologist in Baltimore, Maryland. Dr. Gaskin is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Patent Ductus Arteriosus, Heart Murmurs, Ventricular Septal Defects, and Bicuspid Aortic Valve.

Diljon Chahal is a Cardiologist in Baltimore,, Maryland. Dr. Chahal 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, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Thomas Traill is a Cardiologist in Baltimore,, Maryland. Dr. Traill is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Marfan Syndrome, Congenital Contractural Arachnodactyly, Arachnodactyly, and Bicuspid Aortic Valve.

Rachel Marcus is a Cardiologist in Baltimore,, Maryland. Dr. Marcus is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. Her top areas of expertise are Chagas Disease, Endocarditis, Cardiomyopathy, and Pediatric Myocarditis.

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

Raktim Ghosh is a Cardiologist in Baltimore, Maryland. Dr. Ghosh is rated as an Experienced provider by MediFind in the treatment of Patent Foramen Ovale. His top areas of expertise are Cardiomyopathy, Atherosclerosis, Heart Attack, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.