John T Larossa, M.D.

Primary specialty

SpecialistTaxonomy code 174400000X

License

36773 Issued in MA

Practice address

2000 Washington St
Suite 100
Newton, MA 02462-1650

Phone

(617) 244-1311

Fax

(617) 244-2819

NPI assigned

Mar 1, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 6

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

EndocrinologyAlso: Internal Medicine

Education

Tufts University School of Medicine, 1973

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• Newton-Wellesley Hospital Hospital, Newton, MA, CCN 220101
• Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Interoperability endpoints

• Direct secure messaging: larossa.john.jtl@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.

• Newton Wellesley Surgeons Inc

  • Specialist
  • Newton, MA
  • NPI 1437295714
  NPD (past)

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

• Brigham & Womens Hospital, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1790717650
  Care Compare affiliation
• Newton-Wellesley Hospital

  • General Acute Care Hospital
  • Newton, MA
  • NPI 1992737761
  Care Compare affiliation

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

{
    "created_epoch": "1141171200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1346217155",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2000 WASHINGTON ST",
            "address_2": "SUITE 100",
            "city": "NEWTON",
            "state": "MA",
            "postal_code": "024621650",
            "telephone_number": "617-244-1311",
            "fax_number": "617-244-2819"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2000 WASHINGTON ST",
            "address_2": "SUITE 100",
            "city": "NEWTON",
            "state": "MA",
            "postal_code": "024621650",
            "telephone_number": "617-244-1311",
            "fax_number": "617-244-2819"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LAROSSA",
        "first_name": "JOHN",
        "middle_name": "T",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-01",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "MA",
            "license": "36773",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2051524",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BC/BS",
            "identifier": "B33459",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PILGRIM",
            "identifier": "60453",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TUFTS",
            "identifier": "701905",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UNITED",
            "identifier": "3300175",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CIGNA",
            "identifier": "B10018001",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Danielle Lee Laramee, PA-C
• Sarah A Larch, P.A.
• Amanda Larios
• Kylee Larkin
• Jemimah Larose
• Gwendolyn Larsen
• Kathryn N Larsen, PT, DPT
• Davis William Larson, MSN, RN
• Patricia Byrne Larson, LICSW
• Susan Laughlin

• Specialist in Newton, MA
• Providers in Newton, MA by specialty
• Specialist in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.