COUNTY OF ORANGE
NPI 1730226499
Clinic/Center - Adult Mental Health in Costa Mesa, CA
About County Of Orange NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
COUNTY OF ORANGE (NPI 1730226499), doing business as Amhs Open Access Costa Mesa, is a healthcare organization registered as an adult mental health in Costa Mesa, California and active in the NPI registry since January 2007. The organization lists Chi Y Rajalingam, Chief Compliance Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 2
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
County Of Orange is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
119Medicare enrollment records show 119 clinicians reassign Medicare billing to County Of Orange, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 85 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 8
Nearest to this location (20)
See all 119Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is County Of Orange's NPI number?
The NPI number for County Of Orange is 1730226499. It was assigned to this organization in the NPPES registry on January 31, 2007. The provider is doing business as AMHS Open Access Costa Mesa. The provider is also known as AMHS Centralized Intake South.
Where is County Of Orange located?
County Of Orange is located at 2801 Bristol St. 2nd Floor, Costa Mesa, CA 92626. The listed phone number is (714) 850-8463.
What is County Of Orange's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Adult Mental Health, with taxonomy code 261QM0850X.
Is County Of Orange enrolled in Medicare?
Yes. County Of Orange is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through County Of Orange?
According to the CMS Revalidation Reassignment List (October 2026 release), 119 clinicians in 8 Medicare specialties reassign their Medicare billing to County Of Orange. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Clinical Social Worker (40), Marriage and Family Therapist (36) and Psychiatry (36). Of these, 2 practice at this address and 85 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for County Of Orange was last updated on June 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# County Of Orange · NPI 1730226499
Adult Mental Health organization in Costa Mesa, California. Organization record, active in the CMS NPPES registry since January 31, 2007.
## Identity
- **NPI:** 1730226499 (Entity type: Organization)
- **Enumerated:** January 31, 2007
- **Primary specialty:** Clinic/Center - Adult Mental Health · taxonomy 261QM0850X
- **Also known as:** AMHS Open Access Costa Mesa (Doing Business As); AMHS Centralized Intake South (Other Name)
- **Organization subpart:** Yes (part of County Of Orange)
- **Authorized official:** Chi Rajalingam, CHIEF COMPLIANCE OFFICER
## Practice location
- **Address:** 2801 BRISTOL ST., 2ND FLOOR, Costa Mesa, CA 92626-5996
- **Phone:** (714) 850-8463
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 119 clinicians in 8 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Clinical Social Worker (40), Marriage and Family Therapist (36), Psychiatry (36); 2 practice at this address and 85 within 10 miles; [full list](https://npiprofile.com/npi/1730226499/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 12, 2026
- **Other identifiers:** Medicaid 3008 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1730226499) · Data from the CMS NPPES public registry.