Northside Hospital Cardiovascular Institute provides heart care that is personal, professional, compassionate and comprehensive. Our team of top board-certified cardiologists are renowned and recognized for ground-breaking research, cardiac expertise, industry leadership and compassionate patient visits.


Located in Braselton, Canton, Crabapple, Cumming, Dahlonega, Dawsonville, Duluth, Gainesville, Lawrenceville, Midtown Atlanta, Sandy Springs-Barfield, and Sandy Springs-Hammond.

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Alok Gambhir, MD, PhD, FACC, FHRS

Chief of Cardiac Electrophysiology, Northside Health System

Alok Gambhir, MD, PhD, FACC, FHRS

Dr. Alok Gambhir’s cardiac electrophysiology practice merges his passion for patient care with his love of math and physics. Over the past three decades, he has been published in several prestigious scholarly journals that span many disciplines of cardiology, cardiac electrophysiology, physics and engineering. In addition to delivering patient-centric care, Dr. Gambhir employs the latest technologies and techniques—this includes WATCHMAN, a groundbreaking device of which he is one of the top implanters in the country.

When he’s not working, Dr. Gambhir enjoys spending time with family; reading the latest advances in math, physics and technology; and playing sports with his children.

Training & Affiliations

Doctor of Medicine, State University of New York at Stony Brook

Doctorate (PhD), Physics, State University of New York at Stony Brook

Masters, Physics, State University of New York at Stony Brook

Residency, Internal Medicine, Mount Sinai Hospital

Fellowship, Cardiology, Columbia University Medical Center, New York Presbyterian Hospital

Fellowship, Cardiac Electrophysiology, New York University Langone Medical Center

Board certified in Internal Medicine, Cardiovascular Disease and Cardiac Electrophysiology

Fellow, American College of Cardiology

Fellow, Heart Rhythm Society


Meet the other expert electrophysiologist with Northside Hospital Cardiovascular Institute.
Niraj Sharma, MD, FACC, FHRS