Maddison R Massey, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

Practice address

115 Mill St
Belmont, MA 02478-1048

Phone

(617) 855-2207

Fax

(617) 855-3724

NPI assigned

Aug 30, 2022

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other names 1

• Maddison R Massey Professional name

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 Social Worker

Education

Other, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

The McLean Hospital CorporationGroup PAC ID 9436040961, 186 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: norton.maddison.mcl@direct.partners.masshiway.net

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

  Clinical

  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1661817600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777939200000",
    "number": "1356061410",
    "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": "024781064",
            "telephone_number": "617-855-2207",
            "fax_number": "617-855-3724"
        },
        {
            "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": "617-855-2207",
            "fax_number": "617-855-3724"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASSEY",
        "first_name": "MADDISON",
        "middle_name": "R",
        "credential": "LCSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-08-30",
        "last_updated": "2026-05-05",
        "certification_date": "2026-05-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "MA",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MADDISON",
            "last_name": "MASSEY",
            "middle_name": "R",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

• Mariani Psychotherapy, LLC
• Antonia Mariani
• Ami Mahendra Maru, DMD
• Mary Rockas MD PLLC
• Michele L Masi, MD
• Maya Massing-Schaffer, PHD
• Alison Marie Matthews, LMHC
• Lisa Max, LSW
• Victoria Maxwell
• Mayani Dental Belmont LLC

• Clinical Social Worker in Belmont, MA
• Providers in Belmont, MA by specialty
• Clinical Social Worker in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 5, 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.