Brian Keselyak

Primary specialty

Emergency Registered NurseTaxonomy code 163WE0003X

License

95227210 Issued in CA

Practice address

1601 Ygnacio Valley Rd
Walnut Creek, CA 94598-3122

Phone

(925) 939-5800

NPI assigned

Aug 24, 2026

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

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

{
    "created_epoch": "1787529600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787529600000",
    "number": "1154237709",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1601 YGNACIO VALLEY RD",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945983122",
            "telephone_number": "925-939-5800"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1601 YGNACIO VALLEY RD",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945983122",
            "telephone_number": "925-939-5800"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KESELYAK",
        "first_name": "BRIAN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-08-24",
        "last_updated": "2026-08-24",
        "certification_date": "2026-08-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WE0003X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Emergency",
            "state": "CA",
            "license": "95227210",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Diane Kern, MFT
• Raechellenicole Kern
• Claire Elizabeth Kerney, PA-C
• Kelly Maureen Kerr, DPT
• Pamela L. Kershner, MD
• Janet Kettelhut
• Christopher Tyler Key, PA-C
• Brian J Keyashian, M.D.
• Justin Mark Keyashian, DDS
• Brandy Keyes

• Emergency Registered Nurse in Walnut Creek, CA
• Providers in Walnut Creek, CA by specialty
• Emergency Registered Nurse in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.