NPIMap

Organization Active NPI

Crittenton Services

  • Case Management Agency
  • Fullerton, CA
National Provider Identifier
1699143545
Registry record updated Oct 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Case Management AgencyTaxonomy code 251B00000X
Legal business name
CRITTENTON SERVICES
Practice address
1400 N Harbor Blvd Ste 200
Fullerton, CA 92835-4145
Phone
(714) 680-9000
Fax
(714) 680-8207
NPI assigned
Sep 9, 2015
Last updated
Oct 6, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Oct 6, 2026

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

Authorized official

Name
Natalie Nieva
Title
Supervisor MH
Phone
(714) 680-9000

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Case Management Agency 251B00000X Primary

Addresses

Primary practice location

1400 N Harbor Blvd Ste 200
Fullerton, CA 92835-4145

Mailing address

PO Box 919
Fullerton, CA 92836-0919
Phone (714) 680-9000

National Provider Directory

National Provider Directory
Tax ID family
Crittenton Services for Children and Families8 organizations share this tax ID, including this one

Other organizations with this tax ID 7

Organizations that report the same tax identification number in the National Provider Directory.

Practitioners & affiliated clinicians

Practitioners 294

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 294

NPI Registry JSON

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

{
    "created_epoch": "1441756800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1791244800000",
    "number": "1699143545",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 919",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928360919",
            "telephone_number": "714-680-9000",
            "fax_number": "714-680-8233"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1400 N HARBOR BLVD STE 200",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928354145",
            "telephone_number": "714-680-9000",
            "fax_number": "714-680-8207"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "CRITTENTON SERVICES",
        "organizational_subpart": "NO",
        "enumeration_date": "2015-09-09",
        "last_updated": "2026-10-06",
        "certification_date": "2026-10-06",
        "status": "A",
        "authorized_official_last_name": "NIEVA",
        "authorized_official_first_name": "NATALIE",
        "authorized_official_title_or_position": "SUPERVISOR MH",
        "authorized_official_telephone_number": "714-680-9000"
    },
    "taxonomies": [
        {
            "code": "251B00000X",
            "taxonomy_group": "",
            "desc": "Case Management",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Fullerton, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 6, 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.