Dr. Joseph Marine

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 a Distinguished 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.

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 a Distinguished 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 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 an Elite provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Ventricular Tachycardia, Arrhythmias, Sarcoidosis, Cardiac Ablation, and Pacemaker Implantation.