Tracy L. Ansay, M.D.
Individual provider Active NPI Neurological Surgery Physician · South Weymouth, MA
NPI 1154532992 · NPPES record last updated Jul 25, 2026
Key facts
- NPI
- 1154532992
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Neurological Surgery Physician 207T00000X
- License
- 254744 (MA)
- Practice address
- 851 Main St Ste 11
South Weymouth, MA 02190 - Phone
- (781) 331-0250
- Fax
- (781) 340-0506
- NPI assigned
- May 24, 2007
- Sex
- Female
- Sole proprietor
- Yes
Organizations & group practices 9
Hospital & facility affiliations 4
Medicare Care Compare profile
- Specialty
- Neurosurgery
- Education
- University of Arizona College of Medicine, 2006
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Brigham and Womens Physicians Organization Inc
Practice addresses (Care Compare)
75 Francis St
Boston, MA 02115-6110
Phone (617) 732-5500
Hospital & facility affiliations
- Croi Health
- South Shore Hospital
- Brigham and Women'S Hospital
- Dana-Farber Cancer Institute
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Spinal fusion | 76 |
| Laminectomy or laminotomy (partial removal of spine bones) | 39 |
Medicare participation
- Medicare fee-for-service enrollment
- Enrolled in MA
- Eligible to order & refer
- Part B services: Yes · DME: Yes · Home health: Yes · Power mobility devices: Yes · Hospice: Yes
Medicare enrollment records
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20130918000681 | MA | Practitioner - Neurosurgery | 3971747627 | Reassigns benefits to 2 organizations |
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Brigham and Women'S Hospital | Current | Accepting new patients | |
| Dana-Farber Cancer Institute, Inc. | Current |
Accepting new patients | |
| Dana-Farber Cancer Institute, Inc. | Current |
Accepting new patients | |
| Brigham and Womens Physicians Organization Inc | Past | Accepting new patients |
Locations
75 Francis St
Boston, MA 02115
450 Brookline Ave
Boston, MA 02215
Phone (508) 478-2061
101 Columbian St
Fl 3
Weymouth, MA 02190
Phone (781) 624-4800
55 Fogg Rd
Weymouth, MA 02190
Phone (781) 340-4293
Interoperability endpoints
- ansay.tracy.bwh@direct.partners.masshiway.net
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Neurological Surgery Physician | 207T00000X | 254744 | MA | Yes |
Addresses
Primary practice location
851 Main St Ste 11
South Weymouth, MA 02190
Mailing address
375 Boylston St
Brookline, MA 02445-6007
Phone (857) 307-0869
Other practice location 1
75 Francis St
Boston, MA 02115-6110
Phone (617) 732-5500
Other providers in South Weymouth, MA
- Aboualkheir Alzaim
- Sarah Mariam Ameri
- Nita Amornsiripanitch
- Anjali Andalkar
- Shaheen Andreas
- Dana Anstett
- Elvis Joel Aponte-Rivera
- Katelyn Marie Arena
- Joshua M Arkin
- Tara Armstrong
All providers in South Weymouth, MA · Neurological Surgery Physician in Massachusetts
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Jul 25, 2026. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
- Order and Referring (CMS).
- Medicare Care Compare provider data (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.