NPIMap

Organization Active NPI

County of Orange

Doing business as AMHS Open Access Costa Mesa

  • Adult Mental Health Clinic/Center
  • Costa Mesa, CA
National Provider Identifier
1730226499
Registry record updated Jun 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Adult Mental Health Clinic/CenterTaxonomy code 261QM0850X
Legal business name
COUNTY OF ORANGE
Doing business as
AMHS Open Access Costa Mesa
Practice address
2801 Bristol St.
2ND Floor
Costa Mesa, CA 92626-5996
Phone
(714) 850-8463
NPI assigned
Jan 31, 2007
Organization subpart
Yes
Parent organization
COUNTY OF ORANGEAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Jun 12, 2026

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

Authorized official

Name
Dr. CHI Y Rajalingam, PH.D., CHC
Title
Chief Compliance Officer
Phone
(714) 834-3154

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Adult Mental Health Clinic/Center 261QM0850X Primary

Addresses

Primary practice location

2801 Bristol St.
2ND Floor
Costa Mesa, CA 92626-5996

Mailing address

405 W 5TH St Ste 212
Santa Ana, CA 92701-4522
Phone (714) 568-5614

Other identifiers 1

IdentifierTypeStateIssuer
3008MedicaidCA

Other names 2

  • AMHS Open Access Costa Mesa Doing business as
  • AMHS Centralized Intake South Other name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20031117000447 CA Part B Supplier - Clinic/Group Practice 1951215789 Receives reassigned benefits from 112 practitioners
26 other NPIs on this enrollment
This NPI is an additional NPI on the enrollment
Practice locations: Westminster, CA; Santa Ana, CA; Orange, CA; Fullerton, CA; Costa Mesa, CA; Anaheim, CA; Aliso Viejo, CA; Mission Viejo, CA

Other NPIs on the same Medicare enrollment 26

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

View all 26

National Provider Directory

National Provider Directory
Part of
Human Services Agency

Locations

2801 Bristol St
Fl 2
Costa Mesa, CA 92626
Phone (714) 850-8463

Practitioners & affiliated clinicians

Practitioners 2

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1170201600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1781222400000",
    "number": "1730226499",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "405 W 5TH ST STE 212",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927014522",
            "telephone_number": "714-568-5614",
            "fax_number": "714-834-6595"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2801 BRISTOL ST.",
            "address_2": "2ND FLOOR",
            "city": "COSTA MESA",
            "state": "CA",
            "postal_code": "926265996",
            "telephone_number": "714-850-8463"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "COUNTY OF ORANGE",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "COUNTY OF ORANGE",
        "enumeration_date": "2007-01-31",
        "last_updated": "2026-06-12",
        "certification_date": "2026-06-12",
        "status": "A",
        "authorized_official_last_name": "RAJALINGAM",
        "authorized_official_first_name": "CHI",
        "authorized_official_middle_name": "Y",
        "authorized_official_title_or_position": "CHIEF COMPLIANCE OFFICER",
        "authorized_official_telephone_number": "714-834-3154",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "PH.D., CHC"
    },
    "taxonomies": [
        {
            "code": "261QM0850X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Adult Mental Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3008",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "AMHS Open Access Costa Mesa",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "AMHS Centralized Intake South",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Costa Mesa, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 12, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.