William J. Harrigan

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

Practice address

675 Main St
Waltham, MA 02451-0602

Phone

(508) 416-7872

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

Other names 1

• Baz Harrigan Other name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

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": "1659252732",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10 BUTLER AVE",
            "city": "MAYNARD",
            "state": "MA",
            "postal_code": "017541404",
            "telephone_number": "508-416-7872",
            "fax_number": "508-628-7329"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "675 MAIN ST",
            "city": "WALTHAM",
            "state": "MA",
            "postal_code": "024510602",
            "telephone_number": "508-416-7872"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARRIGAN",
        "first_name": "WILLIAM",
        "middle_name": "J.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-09-08",
        "last_updated": "2025-09-08",
        "certification_date": "2025-09-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "BAZ",
            "last_name": "HARRIGAN",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

• Joshua Armand Hanson, M.A.
• Happy at Home LLC
• Adam Harlow, M.S., BCBA
• Melissa P. D. Harms, MSW
• Katrina Marie Harrigan, LMHC
• Catherine Harrington
• Kathleen D Harrington, CRNA
• Kristen Harrington
• Megan Harrington
• Rose Harrington, COUNSELOR

• Mental Health Counselor in Waltham, MA
• Providers in Waltham, MA by specialty
• Mental Health Counselor 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.