Individual provider Active NPI

Katherine Nicolau

  • Clinical Social Worker
  • Stockton, CA
National Provider Identifier
1891109484
Registry record updated Feb 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
License
95966 Issued in CA
Practice address
2040 West LN
Stockton, CA 95205-3358
Phone
(209) 272-2025
NPI assigned
Jun 11, 2014
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 23, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Case Manager/Care Coordinator 171M00000X
Clinical Social Worker 1041C0700X 95966 CA Primary

Addresses

Primary practice location

2040 West LN
Stockton, CA 95205-3358

Mailing address

5201 Great America Pkwy
Ste 320
Santa Clara, CA 95054-1140

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

State licenses

LicenseStateTypeSpecialty
95966CAMDClinical Social Worker

NPI Registry JSON

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

{
    "created_epoch": "1402444800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771804800000",
    "number": "1891109484",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5201 GREAT AMERICA PKWY",
            "address_2": "STE 320",
            "city": "SANTA CLARA",
            "state": "CA",
            "postal_code": "950541140"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2040 WEST LN",
            "city": "STOCKTON",
            "state": "CA",
            "postal_code": "952053358",
            "telephone_number": "209-272-2025"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NICOLAU",
        "first_name": "KATHERINE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-06-11",
        "last_updated": "2026-02-23",
        "certification_date": "2026-02-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "171M00000X",
            "taxonomy_group": "",
            "desc": "Case Manager/Care Coordinator",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "95966",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Stockton, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 23, 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.