Dr. John is a board-certified, fellowship-trained cardiologist with more than 25 years of experience. He is a clinical professor in the Department of Medicine at Stanford University School of Medicine. He diagnoses and manages all forms of cardiac arrhythmias including atrial fibrillation and ventricular arrhythmias. His special interests include catheter ablation for SVT, atrial arrhythmias, ventricular arrhythmias, pacemaker and defibrillator implants, and lead extraction. Dr. John has conducted extensive research. He has participated in large multi-center clinical trials, including over 30 studies as a primary investigator of drugs, devices, and ablation techniques. He helped pioneer a new way to manage scar-related ventricular tachyca
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