About Michael Mazzini, MD
Departments, Centers, & Programs:
Clinical Interests:
- Arrhythmias
- Arrhythmogenic right ventricular cardiomyopathy
- Brugada and Long QT syndromes
- Cardiac electrophysiology
- Cardiac resynchronization therapy (CRT)
- Catheter ablation for cardiac arrhythmias
- Catheter ablation of atrial fibrillation
- Catheter ablation of supraventricular tachycardia
- Catheter ablation of ventricular tachycardia
- Defibrillators
- Implantable cardioverter defibrillators (ICD) and pacemakers
- Pacemakers
Treats:
- Adult
Locations
Mass General: Demoulas Center for Cardiac Arrhythmias
55 Fruit St.
Boston, MA 02114
Phone: 617-724-4500
Medical Education
- MD, University of Colorado School of Medicine
- Residency, Brigham and Women's Hospital
- Fellowship, Boston Medical Center (BMC)
- Fellowship, Boston Medical Center (BMC)
American Board Certifications
- Cardiovascular Disease, American Board of Internal Medicine
- Clinical Cardiac Electrophysiology, American Board of Internal Medicine
Accepted Insurance Plans
- Aetna
- Beech Street
- Blue Cross Blue Shield
- Blue Cross Blue Shield Medicare
- Cigna
- Commonwealth Care Alliance
- Coventry
- Fallon Health
- Harvard Pilgrim Health Care
- Humana
- Maine Community Health Options
- Mass General Brigham Health Plan
- MassHealth
- Medicaid CT
- Medicaid ME
- Medicaid NH
- Medicaid RI
- Medicare
- Medicare ACO
- Multiplan
- Railroad Medicare
- Senior Whole Health
- TriCare
- Tufts Health Plan
- Tufts Medicare Preferred
- United Health Care
- Wellpoint
- WellSense
- WellSense NH
Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.
Patient Gateway
Secure online access to your health information whenever you need it. Check appointments, communicate with your provider and pay bills online 24/7.
A Top Hospital in America
Mass General is recognized as a top hospital on the U.S. News Best Hospitals Honor Roll for 2025-2026.

Reviews: Comments and Ratings