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 Elite provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Ventricular Tachycardia, 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 Elite provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Arrhythmias, Cardiac Ablation, and Heart Transplant.

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 Elite provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Cardiac Tamponade, Cardiac Ablation, and Pacemaker Implantation.

Jonathan Rogers is a Cardiologist in Pikesville,, Maryland. Dr. Rogers is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), His Bundle Tachycardia, and Paroxysmal Supraventricular Tachycardia (PSVT).

Benjamin Dubois is a Cardiologist in Pikesville,, Maryland. Dr. Dubois is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Heart Failure with Preserved Ejection Fraction (HFpEF), Coronary Heart Disease, Atherosclerosis, and Pacemaker Implantation.

Ajay Soodan is a Cardiologist in Pikesville, Maryland. Dr. Soodan is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Arrhythmias, Familial Progressive Cardiac Conduction Defect, Atrial Fibrillation, Pacemaker Implantation, and Cardiac Ablation.

Ambereen Quraishi is a Cardiologist in Pikesville,, Maryland. Dr. Quraishi is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. Her top areas of expertise are Atrial Fibrillation, Wolff-Parkinson-White Syndrome, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Charles Cummings is a Cardiologist in Pikesville,, Maryland. Dr. Cummings is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atherosclerosis, Coronary Heart Disease, Angina, Pacemaker Implantation, and Heart Bypass Surgery.

Jonathan Dubin is a Cardiologist in Pikesville,, Maryland. Dr. Dubin is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Inappropriate Sinus Tachycardia (IST), Fainting, and Familial Neurocardiogenic Syncope.

Mohammed Kanjwal is a Cardiologist in Baltimore,, Maryland. Dr. Kanjwal is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are His Bundle Tachycardia, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Paroxysmal Supraventricular Tachycardia (PSVT), Pacemaker Implantation, and Cardiac Ablation.

Ijaz Khan is a Cardiologist in Randallstown, Maryland. Dr. Khan is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Myocarditis, Familial Ventricular Tachycardia, and Inappropriate Sinus Tachycardia (IST).

Dr. Andreas S. Barth is an Associate Professor in the Division of Cardiology at the Johns Hopkins School of Medicine and Director of the Center for Inherited Heart Diseases. His clinical work focuses on clinical cardiac electrophysiology with a specific focus on inherited arrhythmia syndromes and channelopathies, including long QT syndrome, Brugada syndrome, CPVT and arrhythmogenic cardiomyopathies. Additionally, Dr. Barth participates in a multidisciplinary clinic at Kennedy Krieger Institute providing Cardiology care to patients with muscular dystrophies and mitochondrial disease. Dr. Barth performs pacemaker and defibrillator implantation and complex catheter ablations for atrial and ventricular arrhythmias. His basic research lab explores the relationship between metabolic and arrhythmogenic ion channel remodeling in heart failure and myotonic dystrophy. Dr. Barth earned a combined doctor of medicine and doctor of philosophy from the Ludwig-Maximilians-University in Munich, Germany. He joined the Johns Hopkins faculty in 2016. He has been recognized with the First Prize for the Stanley L. Blumenthal Cardiology Research Award in Clinical Science in the Division of Cardiology at Johns Hopkins Hospital, and as a Young Investigator Award Finalist of the American Heart Association and Heart Rhythm Society. Dr. Barth is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Cardiomyopathy, Arrhythmias, Heart Attack, Cardiac Ablation, and Pacemaker Implantation.

Jonathan Chrispin, M.D., is an Associate Professor of Medicine in the Johns Hopkins Medicine Division of Cardiology, Electrophysiology and Arrhythmia, as well as an Associate Professor of Biomedical Engineering at Johns Hopkins University. Dr. Chrispin focuses on all aspects of clinical electrophysiology, including pacemaker/defibrillator implantation and complex catheter ablation for atrial and ventricular arrhythmias. Dr. Chrispin received his Bachelor of Arts degree from Harvard University. He received his Doctor of Medicine degree from Vanderbilt University. He completed intern and residency training in internal medicine at The Johns Hopkins Hospital, where he also completed a fellowship in cardiovascular disease and served as chief clinical cardiac electrophysiology fellow. He is a member of the American College of Cardiology, the American Heart Association, and the Heart Rhythm Society. Dr. Chrispin directs the Ventricular Arrhythmia Ablation and Research program, focusing on using advanced cardiac imaging to better understand the structural substrate associated with the development of ventricular arrhythmias and using artificial intelligence to improve the risk stratification of sudden cardiac death. Further, he is involved in developing clinical trials to improve the safety and efficacy of catheter ablation for the treatment of ventricular tachycardia. His work has led to Dr. Chrispin publishing in a number of international journals, including Circulation, the Journal of the American College of Cardiology, Heart Rhythm Journal, Nature Cardiovascular Research, Journal of the American Heart Association, and EP Europace. Dr. Chrispin is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Ventricular Tachycardia, Arrhythmias, Sarcoidosis, Cardiac Ablation, and Pacemaker Implantation.

Dr. Michael J. Blaha MD MPH is Professor of Cardiology and Epidemiology and presently serves as the Director of Clinical Research for the Johns Hopkins Ciccarone Center for the Prevention of Cardiovascular Disease, Director of the Cardiometabolic Clinic, and Program Director for the Preventive Cardiology Fellowship. His clinical interests include primary and secondary prevention of cardiovascular disease, with emphasis on early intervention in patients with advanced subclinical atherosclerosis detected with cardiac computed tomography. Dr. Blaha represents the 4th generation of physicians in his family. After earning a BS in pre-medical studies and classical civilization at the University of Notre Dame in 2001, Dr. Blaha went to Vanderbilt University where in 2006 he received his MD as well as an MPH. in clinical epidemiology and biostatistics. Dr. Blaha then completed his Internal Medicine residency in the Osler Medical Housestaff Training Program at Johns Hopkins in 2009 before completing a fellowship in Cardiology at Johns Hopkins in 2012. In 2018, Dr. Blaha received the Dr. Fred Brancati award at Johns Hopkins for excellence in mentoring. He has mentored over 30 trainees, many of which have gone on to hold prominent academic appointments. In 2021, Dr. Blaha was named to the Clarivate Highly Cited Researcher List, representing the top 1% of world’s researchers, and was first named to the Baltimore Magazine Best Doctors List. In 2022, he received the Arthur S. Agatston Cardiovascular Disease Prevention Award. Clinically, he practices as a preventive cardiologist specializing in cardiometabolic disease and in the interpretation of cardiac CT. His clinic specializes in patients with cardiometabolic disease and advanced subclinical atherosclerosis, and the focused use of an array of lifestyle and pharmacotherapies to mitigate that risk. Dr. Blaha is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atherosclerosis, Coronary Heart Disease, High Cholesterol, Metabolic Syndrome, and Percutaneous Coronary Intervention (PCI).

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 a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. Her top areas of expertise are Cardiomyopathy, Atrial Fibrillation, Heart Attack, and Pulmonary Hypertension.

Zalman Kahn is a Cardiologist in Pikesville,, Maryland. Dr. Kahn is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Arrhythmias, Atrial Fibrillation, Familial Dilated Cardiomyopathy, and Glucocorticoid-Remediable Aldosteronism.

Andrew Barnstein is a Cardiologist in Pikesville,, Maryland. Dr. Barnstein is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atherosclerosis, Coronary Heart Disease, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), and Atrial Tachycardia.

Srivasavi Chaganti is a Cardiologist in Pikesville, Maryland. Dr. Chaganti is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. Her top areas of expertise are Inappropriate Sinus Tachycardia (IST), Familial Ventricular Tachycardia, Arrhythmias, and Fainting.

Paul Gurbel is a Cardiologist in Baltimore, Maryland. Dr. Gurbel is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Acute Coronary Syndrome, Coronary Heart Disease, Heart Attack, Percutaneous Coronary Intervention (PCI), and Angioplasty.

Mohammed Abuzahra is a Cardiologist in Baltimore, Maryland. Dr. Abuzahra is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Coronary Heart Disease, Heart Attack, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Pacemaker Implantation.