Johnathan Larkey

Primary specialty

Social WorkerTaxonomy code 104100000X

Practice address

54 Washburn Ave
Cambridge, MA 02140-1128

Phone

(617) 661-5700

Fax

(617) 868-4840

NPI assigned

Sep 8, 2025

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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

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.

• Cambridge Psychiatric Services, Inc

  • Addiction Psychiatry Physician
  • Cambridge, MA
  • NPI 1851055784
  NPD
• North Charles Mental Health Research & Training Foundation, Inc

  • Psychologist
  • Cambridge, MA
  • NPI 1356411862

  Social Worker

  NPD

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

{
    "created_epoch": "1757289600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757289600000",
    "number": "1831079995",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "54 WASHBURN AVE",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021401128",
            "telephone_number": "617-661-5700",
            "fax_number": "617-868-4840"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "54 WASHBURN AVE",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021401128",
            "telephone_number": "617-661-5700",
            "fax_number": "617-868-4840"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LARKEY",
        "first_name": "JOHNATHAN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-09-08",
        "last_updated": "2025-09-08",
        "certification_date": "2025-09-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jody Lanza-Gregory
• Tramy Lao, PHARMD
• Andrea Spink Lapomardo, PSY.D.
• Ellen Lapowsky, CNM
• Laptis, Inc.
• Tory Leif Larsen, APRN, NP
• Justin David Larson, M.D.
• Christer B Larsson, PSYD
• Marie Lucie Lartigue
• Tanya Lashley, RN

• Social Worker in Cambridge, MA
• Providers in Cambridge, MA by specialty
• Social Worker in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 8, 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.