Allison Gregg

Primary specialty

Clinical NeuropsychologistTaxonomy code 103G00000X

License

PSY10001181 Issued in MA

Practice address

115 Mill St
Belmont, MA 02478-1048

Phone

(617) 855-2000

NPI assigned

Mar 2, 2023

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

State licenses

Practice roles

Locations

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

• The McLean Hospital Corporation

  dba McLean Professional Practice Group

  • Psychiatry Physician
  • Belmont, MA
  • NPI 1114979580
  Medicare reassignment NPD
• Mass General Brigham Medical Group Suburban Massachusetts Inc

  • Family Medicine Physician
  • Newton, MA
  • NPI 1538191218
  Medicare reassignment

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

{
    "created_epoch": "1677715200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775520000000",
    "number": "1386343911",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "115 MILL ST",
            "city": "BELMONT",
            "state": "MA",
            "postal_code": "024781048",
            "telephone_number": "617-855-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "115 MILL ST",
            "city": "BELMONT",
            "state": "MA",
            "postal_code": "024781048",
            "telephone_number": "617-855-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GREGG",
        "first_name": "ALLISON",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2023-03-02",
        "last_updated": "2026-04-07",
        "certification_date": "2026-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103G00000X",
            "taxonomy_group": "",
            "desc": "Clinical Neuropsychologist",
            "state": "MA",
            "license": "PSY10001181",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• James John Greaney Jr., PHARMD
• Mark Green, MD
• Sharon Greenfield, PSY.D.
• Shelly Faith Greenfield, M.D., MPH
• David O Greenleaf, PH.D.
• Leslie Gregory
• David J Grelotti, M.D.
• Diane Lee Grimaldi, R.N., M.S., C.S.
• Tara Grimm, O.D.
• Veronica Lynn Groom, MSW

• Clinical Neuropsychologist in Belmont, MA
• Providers in Belmont, MA by specialty
• Clinical Neuropsychologist in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 7, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.