Individual provider Active NPI

Thomas J Spencer, MD

  • Child & Adolescent Psychiatry Physician
  • Boston, MA
National Provider Identifier
1831118835
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Child & Adolescent Psychiatry PhysicianTaxonomy code 2084P0804X
License
45659 Issued in MA
Practice address
55 Fruit St Yaw 6900
Child and Adolescent Psychiatry
Boston, MA 02114
Phone
(617) 726-2724
Fax
(617) 726-7541
NPI assigned
Jul 19, 2006
Last updated
Sep 11, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatry Physician 2084P0800X 45659 MA
Child & Adolescent Psychiatry Physician 2084P0804X 45659 MA Primary

Addresses

Primary practice location

55 Fruit St Yaw 6900
Child and Adolescent Psychiatry
Boston, MA 02114

Mailing address

PO Box 9142
Mass General Physician Organization
Charlestown, MA 02129-9142
Phone (617) 724-0287

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
45659MAMDChild & Adolescent Psychiatry Physician

Practice roles

OrganizationSpecialtyStatusNew patients
General Hospital Corp Current Accepting new patients

Locations

55 Fruit St
Boston, MA 02114

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

55 Fruit St
#6900
Boston, MA 02114
Phone (617) 724-3163

Interoperability endpoints

  • Direct secure messaging: spencer.thomas.mgh@direct.partners.masshiway.net

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1153267200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1831118835",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 9142",
            "address_2": "MASS GENERAL PHYSICIAN ORGANIZATION",
            "city": "CHARLESTOWN",
            "state": "MA",
            "postal_code": "021299142",
            "telephone_number": "617-724-0287",
            "fax_number": "617-726-2894"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST YAW 6900",
            "address_2": "CHILD AND ADOLESCENT PSYCHIATRY",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02114",
            "telephone_number": "617-726-2724",
            "fax_number": "617-726-7541"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SPENCER",
        "first_name": "THOMAS",
        "middle_name": "J",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-19",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "MA",
            "license": "45659",
            "primary": false
        },
        {
            "code": "2084P0804X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Child & Adolescent Psychiatry",
            "state": "MA",
            "license": "45659",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.