Mary B Callahan, DO
Mary B Callahan, DO is a Cardiovascular Disease (Cardiology) in Sandwich, Massachusetts. Graduated from University of New England, College of Osteo Medicine in 1992, 34 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Massachusetts.
- Years since qualifying
- 34
- Trained at
- University of New England, College of Osteo Medicine
- Licensed in
- MA
- In the registry since
- 2005
What do these letters mean?
- DO — Doctor of Osteopathic Medicine
- A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.
Practice location Address checks out
68A Route 6A Post Ofc Box 1757Sandwich, MA 02563-1757
Phone: (774) 413-5457
Fax: (773) 413-5985
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Pin is approximate — placed at the ZIP-code centre, not the exact door.
Specialties & licences
| Cardiovascular Disease Physician (primary) | Taxonomy 207RC0000X · Licence 160179 (MA) |
|---|
Record details
| NPI number | 1518968882 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Female |
| Credentials | DO |
| Sole proprietor | Yes |
| NPI enumerated | August 9, 2005 |
| Last updated in NPPES | June 26, 2026 |
| Certification date | June 26, 2026 |
| Mailing address | 68a Route 6a, Post Office Box 1757, Sandwich, MA 02563-1864 |
Medicare enrollment
| Medicare specialty | CARDIOVASCULAR DISEASE (CARDIOLOGY) |
|---|---|
| Medical school | UNIVERSITY OF NEW ENGLAND, COLLEGE OF OSTEO MEDICINE |
| Graduated | 1992 (34 years in practice) |
| Accepts Medicare assignment | Yes — accepts the Medicare-approved amount |
Other providers in Sandwich
-
Cardiovascular Associates of Sandwich, LLC
68A Route 6A, Sandwich, MA 02563 · (774) 413-5457