Dr. John Joseph McGrath III, MD
Dr. John Joseph McGrath III, MD is a Radiation Oncology in Concord, Massachusetts. Graduated from University of Vermont College of Medicine in 1993, 33 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.
- Years since qualifying
- 33
- Trained at
- University of Vermont College of Medicine
- Licensed in
- MA
- In the registry since
- 2005
What do these letters mean?
- MD — Doctor of Medicine
- A physician who completed allopathic medical school.
Practice location Partly verified
Old Road To Nine Acre Corner Emerson Hospital Radiation MedicineConcord, MA 01742
Phone: (978) 287-3290
Fax: (978) 287-3295
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Pin is approximate — placed at the ZIP-code centre, not the exact door.
Specialties & licences
| Radiation Oncology Physician (primary) | Taxonomy 2085R0001X · Licence 157106 (MA) |
|---|
Record details
| NPI number | 1215913157 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | MD |
| Sole proprietor | No |
| NPI enumerated | December 22, 2005 |
| Last updated in NPPES | July 13, 2026 |
Medicare enrollment
| Medicare specialty | RADIATION ONCOLOGY |
|---|---|
| Medical school | UNIVERSITY OF VERMONT COLLEGE OF MEDICINE |
| Graduated | 1993 (33 years in practice) |
| Group practice | Massachusetts General Physicians Organization Inc — 3484 clinicians |
| Accepts Medicare assignment | Yes — accepts the Medicare-approved amount |
| Telehealth | Offers telehealth services |
| Practice locations | 2 on file with Medicare |