Dr. Alan B. Schwartz

Dr. Edward P. Gerstenfeld is chief of the UCSF Cardiac Electrophysiology and Arrhythmia Service. His expertise includes treating arrhythmias, or irregular heartbeats, with catheter ablation. Specific techniques, such as endocardial and epicardial ablation, may be used for atrial fibrillation, supraventricular tachycardia or ventricular tachycardia. Gerstenfeld also specializes in treating patients with inherited arrhythmia syndromes such as arrhythmogenic right ventricular cardiomyopathy, hypertrophic cardiomyopathy, Brugada syndrome, long QT syndrome and adult congenital heart disease. Treatments include implantation of pacemakers, defibrillators and cardiac resynchronization devices. In his research, Gerstenfeld studies the mechanisms of arrhythmia, new technologies for mapping and ablation of arrhythmias, biomedical signal processing and electrocardiography. He is the primary investigator for several clinical trials. Gerstenfeld earned a medical degree at Northwestern University Feinberg School of Medicine and a master of science degree in biomedical engineering at Northwestern University. He completed a residency at Beth Israel Deaconess Medical Center, a cardiology fellowship at the University of Massachusetts, a research fellowship at UCSF and an electrophysiology fellowship at the University of Pennsylvania. Gerstenfeld is a fellow of the American College of Cardiology and a member of the Heart Rhythm Society and American Heart Association. He has published numerous manuscripts and book chapters, and he often lectures on mapping and treating arrhythmias. He is associate editor of the Journal of the American College of Cardiology (JACC): Clinical Electrophysiology. Dr. Gerstenfeld is highly rated in 20 conditions, according to our data. His clinical expertise encompasses Arrhythmias, Atrial Fibrillation, Ventricular Tachycardia, Cardiac Ablation, and Pacemaker Implantation. Dr. Gerstenfeld is board certified in American Board Of Internal Medicine, Clinical Cardiac Electrophysiology and Internal Medicine (Sub: Clin Cardiac Electrophysiolog. Dr. Gerstenfeld is currently accepting new patients.

Roy John is a Cardiac Electrophysiologist and a Cardiologist practicing medicine in Stanford, California. Dr. John is highly rated in 41 conditions, according to our data. His clinical expertise encompasses Arrhythmias, Paroxysmal Supraventricular Tachycardia (PSVT), Ventricular Tachycardia, Cardiac Ablation, and Pacemaker Implantation.

Dr. Gregory Marcus is a cardiologist and electrophysiologist who specializes in the diagnosis and treatment of arrhythmias, including cardiac mapping and catheter ablation for atrial fibrillation, supraventricular tachycardias and ventricular arrhythmias. He is also an expert in implanting pacemakers, biventricular devices and defibrillators. In his research, Marcus studies heart rhythm disturbances, and the health effects of common lifestyle factors such as alcohol, caffeine, smoking and other substances, and leads several large projects to use sensors, smart phones and other technologies to conduct clinical research. Marcus earned his medical degree from George Washington University School of Medicine & Health Sciences. He completed his residency at Stanford Medicine. He then completed his training in cardiovascular medicine and cardiovascular electrophysiology at UCSF. Dr. Marcus is highly rated in 17 conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Ectopic Heartbeat, Heart Block, Cardiac Ablation, and Pacemaker Implantation. Dr. Marcus is board certified in American Board Of IM/Clinical Cardiac Electrophys, Clinical Cardiac Electrophysiology. Dr. Marcus is currently accepting new patients.