UC REGENTS
NPI 1346298528
Radiology - Diagnostic Radiology in Orange, CA

Active since May 04, 2006
101 THE CITY DR S, ORANGE, CA 92868(714) 456-8068(714) 456-2979 Get Directions Write a Review

NPPES record last updated: May 22, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 22, 2025, Dec 13, 2023 (2 updates tracked since 2023).

About Uc Regents NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

UC REGENTS (NPI 1346298528), doing business as Uci Radiology Associates, is a healthcare organization registered as a diagnostic radiology in Orange, California and active in the NPI registry since May 2006. The organization lists Sylvia Copen, Provider Enrollment Manager, as its authorized official.

NPPES Registry Identity

NPI1346298528
Entity TypeOrganization
Primary Taxonomy2085R0202X
Legal Business NameUC REGENTS
Location Address101 THE CITY DR SOrange, CA 92868-3201
Mailing AddressPo Box 31001-2482Pasadena, CA 91110-2482 · (714) 456-8026
Fax(714) 456-2979
Organization SubpartNo
Authorized OfficialSylvia CopenProvider Enrollment Manager · (714) 456-6227
Enumeration DateMay 4, 2006
Last NPPES UpdateMay 22, 20252 updates tracked since enumeration
NPPES CertifiedMay 22, 2025
✔ NPI 1346298528 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
101 THE CITY DR S, Orange, CA 92868

Other Names 1

Doing Business AsUci Radiology Associates

Other Identifiers 5

OtherZZZ22566ZCA · Blue Shield Group #
OtherCD6546CA · Railroad Medicare Group
OtherGR0077110CA · Medi-cal Group #
OtherHW13931Medicare Group #
OtherZZZP3012ZCA · Blue Shield Group #

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)

Uc Regents is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by October 31, 2026

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.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20031106000833Non-DME Part B · Clinic/Group PracticeDue dateOctober 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

202

Medicare enrollment records show 202 clinicians reassign Medicare billing to Uc Regents, which bills Medicare for the services they deliver. Of these, 56 practice at this address and 122 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 5

Diagnostic Radiology167
Interventional Radiology25
Nuclear Medicine5
Nurse Practitioner4
Neurology1

Nearest to this location (20)

See all 202
Diagnostic Radiology
NPI 1265220172
101 THE CITY DR S
Orange, CA 92868
(714) 456-6921
✔ PECOS✔ Accepts MedicareSame address
Nuclear Medicine
NPI 1811120371
101 THE CITY DR S
Orange, CA 92868
(714) 880-7812
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1689203739
101 THE CITY DR S
Orange, CA 92868
(714) 456-8888
✔ PECOSSame address
Diagnostic Radiology
NPI 1730767781
101 THE CITY DR S STE 400
Orange, CA 92868
(213) 804-1913
✔ PECOS✔ Accepts MedicareSame address
Interventional Radiology
NPI 1952714065
101 THE CITY DR S
Orange, CA 92868
(714) 456-6595
✔ PECOS✔ Accepts MedicareSame address
Interventional Radiology
NPI 1174880389
101 THE CITY DR S
Orange, CA 92868
(714) 880-7812
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1518345321
101 THE CITY DR S
Orange, CA 92868
(714) 880-7812
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1174838627
101 THE CITY DR S
Orange, CA 92868
(714) 456-7002
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1043536972
101 THE CITY DR S
Orange, CA 92868
(714) 506-9595
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1992083133
101 THE CITY DR S
Orange, CA 92868
(718) 960-9000
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1669685715
101 THE CITY DR S
Orange, CA 92868
(714) 880-7812
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1770162349
101 THE CITY DR S
Orange, CA 92868
(714) 456-7016
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1295173250
101 THE CITY DR S
Orange, CA 92868
(714) 456-8888
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1013233212
101 THE CITY DR S
Orange, CA 92868
(714) 880-7812
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1740449149
101 THE CITY DR S
Orange, CA 92868
(714) 456-7237
✔ PECOS✔ Accepts MedicareSame address
Diagnostic Radiology
NPI 1952690349
101 THE CITY DR S
Orange, CA 92868
(714) 456-7890
✔ PECOS✔ Accepts MedicareSame address
Nuclear Medicine
NPI 1164044640
101 THE CITY DR S
Orange, CA 92868
(714) 456-7890
✔ PECOS✔ Accepts MedicareSame address
Nuclear Medicine
NPI 1386983138
101 THE CITY DR S
Orange, CA 92868
(714) 456-8888
✔ PECOS✔ Accepts MedicareSame address
Interventional Radiology
NPI 1336223262
101 THE CITY DR S
Orange, CA 92868
(714) 456-7237
✔ PECOS✔ Accepts MedicareSame address
Interventional Radiology
NPI 1750875142
101 THE CITY DR S
Orange, CA 92868
(714) 456-8888
✔ PECOS✔ Accepts MedicareSame address
See all 202 clinicians

Source: 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 Uc Regents's NPI number?

The NPI number for Uc Regents is 1346298528. It was assigned to this organization in the NPPES registry on May 4, 2006. The provider is doing business as UCI Radiology Associates.

Where is Uc Regents located?

Uc Regents is located at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-8068.

What is Uc Regents's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Uc Regents enrolled in Medicare?

Yes. Uc Regents is registered in the Medicare PECOS enrollment system.

When is Uc Regents'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 October 31, 2026. 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 Uc Regents?

According to the CMS Revalidation Reassignment List (October 2026 release), 202 clinicians in 5 Medicare specialties reassign their Medicare billing to Uc Regents. 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 Diagnostic Radiology (167), Interventional Radiology (25) and Nuclear Medicine (5). Of these, 56 practice at this address and 122 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 Uc Regents 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.