REGENTS OF THE UNIVERSITY OF CALIFORNIA
NPI 1174662555
Pathology - Anatomic Pathology & Clinical Pathology in Orange, CA
About Regents Of The University Of California NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REGENTS OF THE UNIVERSITY OF CALIFORNIA (NPI 1174662555), doing business as Uc Irvine Pathology Services, is a healthcare organization registered as an anatomic pathology & clinical pathology in Orange, California and active in the NPI registry since February 2007. The organization lists Sylvia Copen, Provider Enrollment Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 3
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Regents Of The University Of California is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by February 28, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
84Medicare enrollment records show 84 clinicians reassign Medicare billing to Regents Of The University Of California, which bills Medicare for the services they deliver. Of these, 17 practice at this address and 52 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 6
Nearest to this location (20)
See all 84Source: 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 Regents Of The University Of California's NPI number?
The NPI number for Regents Of The University Of California is 1174662555. It was assigned to this organization in the NPPES registry on February 5, 2007. The provider is doing business as UC Irvine Pathology Services.
Where is Regents Of The University Of California located?
Regents Of The University Of California is located at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-6411.
What is Regents Of The University Of California's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Regents Of The University Of California enrolled in Medicare?
Yes. Regents Of The University Of California is registered in the Medicare PECOS enrollment system.
When is Regents Of The University Of California's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Regents Of The University Of California?
According to the CMS Revalidation Reassignment List (October 2026 release), 84 clinicians in 6 Medicare specialties reassign their Medicare billing to Regents Of The University Of California. 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 Pathology (66), Diagnostic Radiology (11) and Interventional Radiology (3). Of these, 17 practice at this address and 52 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 Regents Of The University Of California was last updated on May 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Regents Of The University Of California · NPI 1174662555
Anatomic Pathology & Clinical Pathology organization in Orange, California. Organization record, active in the CMS NPPES registry since February 5, 2007.
## Identity
- **NPI:** 1174662555 (Entity type: Organization)
- **Enumerated:** February 5, 2007
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **Also known as:** UC Irvine Pathology Services (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Sylvia Copen, PROVIDER ENROLLMENT MANAGER
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868
- **Phone:** (714) 456-6411 · **Fax:** (714) 456-5873
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** February 28, 2027 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 84 clinicians in 6 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Pathology (66), Diagnostic Radiology (11), Interventional Radiology (3); 17 practice at this address and 52 within 10 miles; [full list](https://npiprofile.com/npi/1174662555/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 22, 2025
- **Other identifiers:** Medicaid LAB00975F (CA); Other ZZZP3016Z (CA); Other 05D0579200 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1174662555) · Data from the CMS NPPES public registry.