NPIMap

Individual provider Active NPI

Tracy L. Ansay, M.D.

  • Neurological Surgery Physician
  • South Weymouth, MA
National Provider Identifier
1154532992
Registry record updated Jul 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurological Surgery PhysicianTaxonomy code 207T00000X
License
254744 Issued in 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
Last updated
Jul 25, 2026By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 25, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Neurological Surgery Physician 207T00000X 254744 MA Primary

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

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20130918000681 MA Practitioner - Neurosurgery 3971747627 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurosurgery
Education
University of Arizona College of Medicine, 2006
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

75 Francis St
Boston, MA 02115-6110
Phone (617) 732-5500

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Spinal fusion76
Laminectomy or laminotomy (partial removal of spine bones)39

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Brigham and Women's Hospital Current Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Sep 1, 2022 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Sep 1, 2022 Accepting new patients
Brigham and Womens Physicians Organization Inc Past Accepting new patients

Locations

450 Brookline Ave
Boston, MA 02215
Phone (508) 478-2061

75 Francis St
Boston, MA 02115

101 Columbian St
Fl 3
Weymouth, MA 02190
Phone (781) 624-4800

55 Fogg Rd
Weymouth, MA 02190
Phone (781) 340-4293

Interoperability endpoints

  • Direct secure messaging: ansay.tracy.bwh@direct.partners.masshiway.net

Organizations & group practices 5

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 4

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1179964800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784937600000",
    "number": "1154532992",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "375 BOYLSTON ST",
            "city": "BROOKLINE",
            "state": "MA",
            "postal_code": "024456007",
            "telephone_number": "857-307-0869"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "851 MAIN ST STE 11",
            "city": "SOUTH WEYMOUTH",
            "state": "MA",
            "postal_code": "02190",
            "telephone_number": "781-331-0250",
            "fax_number": "781-340-0506"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "75 Francis St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021156110",
            "country_code": "US",
            "telephone_number": "617-732-5500",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ANSAY",
        "first_name": "TRACY",
        "middle_name": "L.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-05-24",
        "last_updated": "2026-07-25",
        "certification_date": "2026-07-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "MA",
            "license": "254744",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in South Weymouth, MA

Sources for this page

Verify at the official NPI Registry.