Duncan Patrick O'Mahony, PSYCHOLOGIST

Primary specialty

PsychologistTaxonomy code 103T00000X

License

PSYA.PG.7O165412 Issued in WA

Practice address

195 NE Gilman Blvd Ste 100
Issaquah, WA 98027-2940

Phone

(425) 295-7697

NPI assigned

Oct 8, 2025

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1759881600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788912000000",
    "number": "1821963869",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8823 HOLLY DR APT 505",
            "city": "EVERETT",
            "state": "WA",
            "postal_code": "982081843",
            "telephone_number": "425-295-7697"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "195 NE GILMAN BLVD STE 100",
            "city": "ISSAQUAH",
            "state": "WA",
            "postal_code": "980272940",
            "telephone_number": "425-295-7697"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'MAHONY",
        "first_name": "DUNCAN",
        "middle_name": "PATRICK",
        "credential": "PSYCHOLOGIST",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-10-08",
        "last_updated": "2026-09-09",
        "certification_date": "2026-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "WA",
            "license": "MHCLH61523993",
            "primary": false
        },
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "WA",
            "license": "PSYA.PG.7O165412",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Summer Jo Nowicki, N.D.
• Allison Kathryn Nunn, PT, DPT
• Nurani, Mitchell, Kim, PC
• NW Eye Docs, Inc.
• Mary O'Brien, PHD
• Kaitlyn O'Neel, LSWAIC
• Johanna O'Neil, LMP
• Kari Ciaciuch O'Neill, LICSW
• Tracie O'Neill, MD
• Margaret A. Oblander, PT

• Psychologist in Issaquah, WA
• Providers in Issaquah, WA by specialty
• Psychologist in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 9, 2026; 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.