About Conor Barrett, MD

Dr. Barrett received his BMedSc, MB BCh BAO degrees from the National University of Ireland, Cork. He completed his surgical and medical internships, and subsequently completed his internal medicine residency in Cork University Hospital. His cardiology fellowship training in Ireland was supervised and overseen by the Royal College of Physicians, Ireland. He then completed two years of fellowship training in Cardiac Electrophysiology at Cleveland Clinic, Ohio. Dr. Barrett joined the staff of the Telemachus & Irene Demoulas Family Foundation Center for Cardiac Arrhythmias at Massachusetts General Hospital in 2008.

His main clinical and research interests focus on catheter ablation of cardiac arrhythmias, particularly ventricular tachycardia (VT), atrial fibrillation (AF), and other supraventricular tachycardias (SVTs). Dr Barrett also performs implantation and follow-up of cardiac devices therapy including pacemakers, Implantable Cardioverter Defibrillators (ICDs) and Cardiac Resynchronization Therapy (CRT) devices. He also performs LASER assisted extractions of implanted cardiac devices.

Dr. Barrett is currently accepting new patients.

Clinical Interests:




Mass General: Demoulas Center for Cardiac Arrhythmias
55 Fruit St.
Boston, MA 02114
Phone: 866-644-8910

Martha's Vineyard Hospital
1 Hospital Rd.
Oak Bluffs, MA 02557
Phone: 508-693-0410

Medical Education

  • , National University of Ireland, Cork
  • MB BCH, University of Ireland
  • Residency, Cork University Hospital, Ireland
  • Fellowship, Cleveland Clinic Foundation
  • Fellowship, Cork University Hospital, Ireland
  • Fellowship, Limerick Regional Hospital
  • Fellowship, Mater Misericordiae University Hospital
  • Fellowship, St. Vincent's University Hospital

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


Dr. Barrett's research interests are in both the clinical and experimental (pre-clinical) fields.

He is currently engaged in collaboration with researchers in MIT on a project for enhanced mapping of ventricular arrhythmias. He also has collaborated with other researchers in Massachusetts General Hospital on projects involving localization and characterization of the scar involved in ventricular tachycardia, which can lead to sudden death. He also has been researched the feasibility of a novel pacing strategy for heart failure. Other research interests include novel and emerging technologies for catheter and balloon-based ablation. Dr Barrett is also an investigator for many multi-center studies involving ablation technologies and strategies, and also novel device technologies.


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