Individual provider Active NPI

Rosalyn Sheree Warren, LCSW

  • Clinical Social Worker
  • Lancaster, CA
National Provider Identifier
1073645677
Registry record updated Jun 2, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
License
20937 Issued in CA
Practice address
44228 Hampton St
Lancaster, CA 93536-7512
Phone
(909) 728-3567
NPI assigned
Mar 9, 2007
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 2, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Social Worker 1041C0700X 13200-C NV
Clinical Social Worker 1041C0700X 20937 CA Primary

Addresses

Primary practice location

44228 Hampton St
Lancaster, CA 93536-7512

Mailing address

44228 Hampton St
Lancaster, CA 93536-7512
Phone (909) 728-3567

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
Eligible to order & refer
  • Part B services: No
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
13200-CNVMDClinical Social Worker

NPI Registry JSON

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

{
    "created_epoch": "1173398400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780358400000",
    "number": "1073645677",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "44228 HAMPTON ST",
            "city": "LANCASTER",
            "state": "CA",
            "postal_code": "935367512",
            "telephone_number": "909-728-3567"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44228 HAMPTON ST",
            "city": "LANCASTER",
            "state": "CA",
            "postal_code": "935367512",
            "telephone_number": "909-728-3567"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WARREN",
        "first_name": "ROSALYN",
        "middle_name": "SHEREE",
        "name_prefix": "Dr.",
        "credential": "LCSW",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-03-09",
        "last_updated": "2026-06-02",
        "certification_date": "2026-06-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NV",
            "license": "13200-C",
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "20937",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lancaster, CA

Sources for this page

Verify at the official NPI Registry.