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

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

Vikas Kalra is a Cardiac Electrophysiologist and a Cardiologist in Towson, Maryland. Dr. Kalra is rated as an Experienced provider by MediFind in Cardiac Ablation. His top areas of expertise are Atrial Fibrillation, Bidirectional Tachycardia, Catecholaminergic Polymorphic Ventricular Tachycardia, Pacemaker Implantation, and Cardiac Ablation. Dr. Kalra is currently accepting new patients.

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 Cardiac Ablation. His top areas of expertise are Ventricular Tachycardia, Arrhythmias, Sarcoidosis, Cardiac Ablation, and Pacemaker Implantation.

Athanasios Thomaides is a Cardiologist and a Cardiac Electrophysiologist in Hollywood, Maryland. Dr. Thomaides is rated as a Distinguished provider by MediFind in Cardiac Ablation. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Familial Progressive Cardiac Conduction Defect, Cardiac Ablation, and Pacemaker Implantation. Dr. Thomaides is currently accepting new patients.

"Dr. Sunil Kumar Sinha is an Assistant Professor of Medicine in the Division of Cardiology at the Johns Hopkins University School of Medicine. He is the medical director of the Arrhythmia Service at Frederick Memorial Hospital. Dr. Sinha is also an attending physician at Johns Hopkins Howard County Medical Center. He is currently engaged in research on atrial fibrillation and catheter ablation, defibrillator and pacemaker therapy, and humanitarian device re-use. Dr. Sinha received his undergraduate degree and medical degree from the University of Manitoba in Winnipeg, Canada. He completed a residency in internal medicine at the University of Western Ontario in London, Canada. He returned to the University of Manitoba for his cardiology fellowship. Subsequently, Dr. Sinha completed his clinical cardiac electrophysiology fellowship at the Mount Sinai School of Medicine (New York, New York) prior to joining the Johns Hopkins faculty in 2005. Besides his teaching and clinical engagements, Dr. Sinha is on the editorial board for Heart Rhythm, the official journal of the Heart Rhythm Society and the Cardiac Electrophysiology Society, and was recognized with the HRS “Remarkable Reviewer” distinction from 2006 - 2015 and ""Remarkable Editor"" distinction from 2016 - 2017. He is also a reviewer for PACE, and Circulation: Arrhythmias & Electrophysiology.". Dr. Sinha is rated as a Distinguished provider by MediFind in Cardiac Ablation. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Heart Attack, Cardiac Ablation, and Pacemaker Implantation.

Dr. Stefan Loy Zimmerman is a Professor in the Johns Hopkins University School of Medicine in the Departments of Radiology and Medicine (Cardiology). He specializes in cardiothoracic imaging and is the Division Director of Diagnostic Imaging and Director of Cardiac Imaging. He is the program director for the Cardiothoracic Imaging Fellowship in Radiology. Dr. Zimmerman earned his medical degree from the University of Pennsylvania School of Medicine. He completed both a radiology residency and a cardiovascular imaging fellowship at the Hospital of the University of Pennsylvania. His research focuses on the use of CT and MR imaging in the diagnosis and management of cardiovascular diseases. He has particular interest in the use of cardiac imaging for management of arrhythmias, diagnosis and prognosis of arrhythmogenic right and left ventricular cardiomyopathy, and pulmonary hypertension. Dr. Zimmerman is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Paroxysmal Supraventricular Tachycardia (PSVT), Alveolar Soft Part Sarcoma, Liposarcoma, Cardiac Ablation, and Transcatheter Aortic Valve Replacement (TAVR).

Dr Halperin received the B.S degree in physics with highest distinction from Purdue University, the M.A. degree in physics from the University of California, Berkeley, and the M.D. degree from Louisiana State University, New Orleans, Louisiana. He is a member of Phi Beta Kappa, an Established Investigator and Fellow of the American Heart Association, and a McClure Fellow of the Johns Hopkins University Applied Physics laboratory. Dr. Halperin is currently a Professor of Medicine, Radiology and Biomedical Engineering at the Johns Hopkins Medical Institutions. He is the co-director of the Cardiovascular Imaging Center of Excellence. He serves on the editorial board of the journal Resuscitation, and is a past chair of the national American Heart Association Advanced Cardiovascular Life Support Subcommittee and a past member of the Emergency Cardiac Care Committee. Ten of his students have received young investigator awards from the American Heart Association and Heart Rhythm Society, and he has ongoing support from the National Institutes of Heath for his research programs. He has over 120 peer-reviewed publications and over 20 patents issued. Dr. Halperin is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Ventricular Fibrillation, Heart Attack, Ventricular Tachycardia, Cardiac Ablation, and Lithotripsy.

Dr. Aronis is an Assistant Professor of Medicine in the Division of Cardiology at the Johns Hopkins School of Medicine, the Director of the Complex Adult Congenital Heart Disease Ablation Program, and the Associate Director of the Ventricular Tachycardia Ablation Program. He performs all types of electrophysiology procedures, with a special focus on complex catheter ablations for atrial and ventricular arrhythmias as well as complex ablations for arrhythmias in patients with adult congenital heart diseases. Dr. Aronis received his M.D. and Ph.D. degrees with Summa Cum Laude honors from the University of Patras School of Medicine in Greece. He completed his internal medicine residency training at Boston University Medical Center both his Cardiovascular Disease and Clinical Cardiac Electrophysiology fellowships at The Johns Hopkins Hospital. In addition, he has completed a post-doctoral research fellowship in Translational Research at Beth Israel Deaconess Medical Center / Harvard Medical School and an NIH funded (T-32) post-doctoral research fellowship in computational electrophysiology at the Institute of Computational Medicine at the Johns Hopkins Whiting School of Engineering. He actively engages in clinical trials and research studies aimed at improving patient outcomes and advancing the understanding of cardiac arrhythmias. He is a member of the American College of Cardiology, American Heart Association, and Heart Rhythm Society. Dr. Aronis is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Atrial Fibrillation, Ventricular Tachycardia, Arrhythmias, Cardiac Ablation, and Pacemaker Implantation.

Emmanuel Nsah is a Cardiac Electrophysiologist and a Cardiologist in Salisbury, Maryland. Dr. Nsah is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Sick Sinus Syndrome, Arrhythmias, Dilated Cardiomyopathy (DCM), Pacemaker Implantation, and Cardiac Ablation. Dr. Nsah is currently accepting new patients.

Nilofar Islam is a Cardiac Electrophysiologist and a Cardiologist in Towson, Maryland. Dr. Islam is rated as an Advanced provider by MediFind in Cardiac Ablation. Her top areas of expertise are Atrial Fibrillation, Familial Progressive Cardiac Conduction Defect, Sick Sinus Syndrome, Pacemaker Implantation, and Cardiac Ablation. Dr. Islam is currently accepting new patients.

Stephen Shorofsky is a Cardiac Electrophysiologist and a Cardiologist in Baltimore, Maryland. Dr. Shorofsky is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Arrhythmias, Ventricular Tachycardia, Paroxysmal Supraventricular Tachycardia (PSVT), Cardiac Ablation, and Pacemaker Implantation. Dr. Shorofsky is currently accepting new patients.

Dr. Aravindan Kolandaivelu is an assistant professor of medicine at Johns Hopkins hospital specializing in cardiac electrophysiology and cardiology. Having more than 16 years of diverse experiences, Dr. Kolandaivelu affiliates with many hospitals including Johns Hopkins Hospital, The Johns Hopkins Bayview Medical Center, and cooperates with other doctors and specialists in medical group Johns Hopkins University. Dr. Kolandaivelu completed a medical degree at Johns Hopkins University School of Medicine and a residency at Stanford University Medical Center in internal medicine. He joined the Johns Hopkins University School of Medicine as a cardiology fellow in 2010. Dr. Aravinda was honored with the 2008 Melvin Judkins Young Investigator Award. Dr. Kolandaivelu is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Ventricular Tachycardia, Arrhythmias, Paroxysmal Supraventricular Tachycardia (PSVT), Cardiac Ablation, and Pacemaker Implantation.

Sung Lee is a Cardiac Electrophysiologist in Clinton, Maryland. Dr. Lee is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Ventricular Tachycardia, Pacemaker Implantation, and Cardiac Ablation.

Rawn Salenger is a Thoracic Surgeon in Towson, Maryland. Dr. Salenger is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Mitral Valve Regurgitation, Aortic Valve Stenosis, Coronary Heart Disease, Heart Bypass Surgery, and Coronary Artery Bypass Graft (CABG).

Omar Shams is a Cardiologist and a Cardiac Electrophysiologist in Rockville, Maryland. Dr. Shams is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Paroxysmal Supraventricular Tachycardia (PSVT), Pacemaker Implantation, and Cardiac Ablation. Dr. Shams is currently accepting new patients.

Magdi Saba is a Cardiologist and a Cardiac Electrophysiologist in Baltimore, Maryland. Dr. Saba is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Ventricular Tachycardia, Arrhythmias, Ventricular Fibrillation, Paroxysmal Supraventricular Tachycardia (PSVT), and Cardiac Ablation.

Paul Massimiano is a Thoracic Surgeon in Silver Spring, Maryland. Dr. Massimiano is rated as an Advanced provider by MediFind in Cardiac Ablation. His top areas of expertise are Mitral Valve Prolapse, Mitral Valve Regurgitation, Coronary Heart Disease, Heart Bypass Surgery, and Cardiac Ablation.