Individual provider Active NPI

Katherine O'Hara, LCSW

  • Clinical Social Worker
  • Cambridge, MA
National Provider Identifier
1801708581
Registry record updated Sep 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
License
230751 Issued in MA
Practice address
675 Massachusetts Ave
Cambridge, MA 02139-3309
Phone
(617) 639-5491
NPI assigned
Sep 18, 2026
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 18, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Social Worker 1041C0700X 230751 MA Primary

Addresses

Primary practice location

675 Massachusetts Ave
Cambridge, MA 02139-3309

Mailing address

1 Nashua St Apt 2105
Boston, MA 02114-1620

Medicare participation

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

NPI Registry JSON

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

{
    "created_epoch": "1789689600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789689600000",
    "number": "1801708581",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 NASHUA ST APT 2105",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021141620"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "675 MASSACHUSETTS AVE",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021393309",
            "telephone_number": "617-639-5491"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'HARA",
        "first_name": "KATHERINE",
        "credential": "LCSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-09-18",
        "last_updated": "2026-09-18",
        "certification_date": "2026-09-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "MA",
            "license": "230751",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Cambridge, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.