Liam Joseph O'Halloran, M.D.

Primary specialty

Student in an Organized Health Care Education/Training ProgramTaxonomy code 390200000X

Practice address

Department of Radiology
300 Longwood Ave, Boston Children's Hospital
Boston, MA 02115

Phone

(617) 355-6290

NPI assigned

Feb 25, 2025

Last updated

Aug 27, 2025By the provider in NPPES

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

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1740441600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756252800000",
    "number": "1093511404",
    "addresses": [
        {
            "country_code": "IE",
            "country_name": "Ireland",
            "address_purpose": "MAILING",
            "address_type": "FGN",
            "address_1": "8. ST ALPHONSUS AVENUE",
            "address_2": "SOUTH CIRCULAR ROAD, LIMERICK CITY",
            "city": "LIMERICK",
            "state": "MUNSTER",
            "postal_code": "V94YNW5"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "DEPARTMENT OF RADIOLOGY",
            "address_2": "300 LONGWOOD AVE, BOSTON CHILDREN'S HOSPITAL",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "617-355-6290"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'HALLORAN",
        "first_name": "LIAM",
        "middle_name": "JOSEPH",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-02-25",
        "last_updated": "2025-08-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elizabeth O'Farrell, MS, OTRL
• Brian Patrick O'Gara, MD
• Patrick T O'Gara, MD
• Mary Anne O'Gorman
• Catherine Emily O'Halloran, N.D.
• Thomas David O'Halloran, MB BCH BAO
• Breelin Davenport O'Hara, PA-C
• Brian O'Hara
• Carmen Calderon O'Hara, LICSW
• Elizabeth O'Hara

• Student in an Organized Health Care Education/Training Program in Boston, MA
• Providers in Boston, MA by specialty
• Student in an Organized Health Care Education/Training Program in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 27, 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.