About John McGrath, MD
Departments, Centers, & Programs:
Clinical Interests:
- Breast Cancer
- Gastrointestinal malignancy
- Intensity modulated radiation therapy (IMRT)
- Thoracic malignancies
Treats:
- Adult
Locations
Mass General Brigham Cancer Institute at Emerson Hospital
131 Old Rd. To Nine Acre Corner
John Cuming Building
Concord, MA 01742
Phone: 978-287-3290
Medical Education
- MD, University of Vermont College of Medicine
- Residency, Tufts Medical Center
American Board Certifications
- Radiation Oncology, American Board of Radiology
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 NY
- Medicaid RI
- Medicaid VT
- Medicare
- Medicare ACO
- Multiplan
- Railroad Medicare
- Senior Whole Health
- TriCare
- Tufts Health Plan
- 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.

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