Individual provider Active NPI

Marilyn Elizabeth Kerkhoff, NP

  • Family Nurse Practitioner
  • Martinez, CA
National Provider Identifier
1336123090
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
465769 Issued in CA
Practice address
150 Muir Rd
Martinez, CA 94553-4668
Phone
(925) 372-2494
Fax
(925) 372-2215
NPI assigned
Dec 5, 2005
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Nurse Practitioner 363LF0000X 465769 CA Primary

Addresses

Primary practice location

150 Muir Rd
Martinez, CA 94553-4668

Mailing address

4715 Crestone Needle Way
Antioch, CA 94531-8314
Phone (925) 372-2494

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
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
465769CAMDFamily Nurse Practitioner

NPI Registry JSON

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

{
    "created_epoch": "1133740800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1336123090",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4715 CRESTONE NEEDLE WAY",
            "city": "ANTIOCH",
            "state": "CA",
            "postal_code": "945318314",
            "telephone_number": "925-372-2494",
            "fax_number": "925-372-2215"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "150 MUIR RD",
            "city": "MARTINEZ",
            "state": "CA",
            "postal_code": "945534668",
            "telephone_number": "925-372-2494",
            "fax_number": "925-372-2215"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KERKHOFF",
        "first_name": "MARILYN",
        "middle_name": "ELIZABETH",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-12-05",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "465769",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Martinez, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.