Will O'Brien

Primary specialty

PharmacistTaxonomy code 183500000X

License

25361 Issued in IA

Practice address

250 Mercy Dr
Dubuque, IA 52001-7320

Phone

(563) 589-8000

NPI assigned

Nov 6, 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

State licenses

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

{
    "created_epoch": "1762387200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762387200000",
    "number": "1992675805",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "405 3RD AVE SW",
            "city": "FARLEY",
            "state": "IA",
            "postal_code": "520469681"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "250 MERCY DR",
            "city": "DUBUQUE",
            "state": "IA",
            "postal_code": "520017320",
            "telephone_number": "563-589-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "WILL",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-11-06",
        "last_updated": "2025-11-06",
        "certification_date": "2025-11-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "183500000X",
            "taxonomy_group": "",
            "desc": "Pharmacist",
            "state": "IA",
            "license": "25361",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Pharmacist in Dubuque, IA
• Providers in Dubuque, IA by specialty
• Pharmacist in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 6, 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.