Individual provider Active NPI

Arnold Baker, RN

  • Psychiatric/Mental Health Registered Nurse
  • Eureka, CA
National Provider Identifier
1639725559
Registry record updated Jun 10, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatric/Mental Health Registered NurseTaxonomy code 163WP0808X
License
579461 Issued in CA
Practice address
720 Wood St
Eureka, CA 95501-4413
Phone
(707) 268-2990
NPI assigned
Aug 15, 2019
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 10, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatric/Mental Health Registered Nurse 163WP0808X 579461 CA Primary

Addresses

Primary practice location

720 Wood St
Eureka, CA 95501-4413

Mailing address

3815 Susan Dr Apt O7
San Bruno, CA 94066-6123
Phone (909) 218-1101

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
Credentials
Registered Nurse

State licenses

LicenseStateTypeSpecialty
579461CAMDPsychiatric/Mental Health Registered Nurse

NPI Registry JSON

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

{
    "created_epoch": "1565827200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781049600000",
    "number": "1639725559",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3815 SUSAN DR APT O7",
            "city": "SAN BRUNO",
            "state": "CA",
            "postal_code": "940666123",
            "telephone_number": "909-218-1101"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "720 WOOD ST",
            "city": "EUREKA",
            "state": "CA",
            "postal_code": "955014413",
            "telephone_number": "707-268-2990"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BAKER",
        "first_name": "ARNOLD",
        "credential": "RN",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-08-15",
        "last_updated": "2026-06-10",
        "certification_date": "2026-06-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WP0808X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Psychiatric/Mental Health",
            "state": "CA",
            "license": "579461",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Eureka, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 10, 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.