UCI DEPARTMENT OF MEDICINE
NPI 1619925153
Internal Medicine - Endocrinology, Diabetes & Metabolism in Orange, CA

Q: What is Uc Regents's NPI number?

The NPI number for Uc Regents is 1619925153. It was assigned to this organization in the NPPES registry on May 5, 2006. The provider is doing business as Uci Department Of Medicine.

Q: What is Uc Regents's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for Uc Regents was last updated on August 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.

Active since May 05, 2006

101 THE CITY DR S, ORANGE, CA 92868(714) 456-8068(714) 456-3765 Get Directions Write a Review

NPPES record last updated: August 17, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Uci Department Of Medicine NPPES

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

UCI DEPARTMENT OF MEDICINE (NPI 1619925153) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Orange, California and active in the NPI registry since May 2006. The organization lists Uci Health Provider Relations, Ups Provider Relations, as its authorized official.

NPPES Registry Identity

NPI1619925153

Entity TypeOrganization

Primary Taxonomy207RE0101X

Legal Business NameUC REGENTS

Location Address101 THE CITY DR SOrange, CA 92868

Mailing AddressPo Box 31001-2482Pasadena, CA 91110-2482

Phone(714) 456-8068

Fax(714) 456-3765

Organization SubpartNo

Authorized OfficialUci Health Provider RelationsUps Provider Relations · (714) 456-2986

Enumeration DateMay 5, 2006

Last NPPES UpdateAugust 17, 2018

✔ NPI 1619925153 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

101 THE CITY DR S, Orange, CA 92868

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Other Names 1

Doing Business AsUci Department Of Medicine

Other Identifiers 3

OtherZZZ53989ZCA · Blue Shield Group #

OtherCU0494CA · Railroad Medicare Group

OtherZZZP3010ZCA · Medi-cal Group #

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Uci Department Of Medicine is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

522

Medicare enrollment records show 522 clinicians reassign Medicare billing to Uci Department Of Medicine, which bills Medicare for the services they deliver. Of these, 9 practice at this address and 302 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 36

Internal Medicine160

Nurse Practitioner70

Hematology/Oncology46

Gastroenterology36

Pulmonary Disease36

Cardiovascular Disease (Cardiology)31

Nephrology20

Endocrinology15

28 other specialties108

Nearest to this location (20)

See all 522

Steven Park, MD

Internal Medicine

NPI 1033144928

101 THE CITY DR S
Orange, CA 92868

(714) 456-8068

✔ PECOS✔ Accepts MedicareSame address

Brian S Andrews, MD

Rheumatology

NPI 1609970292

UCI MEDICAL CENTER 101 THE CITY DRIVE SOUTH
Orange, CA 92868

(714) 456-8978

✔ PECOSSame address

John Fruehauf, MD

General Surgery

NPI 1588744635

UCI MEDICAL CENTER 101 THE CITY DRIVE SOUTH
Orange, CA 92868

(714) 456-8978

✔ PECOS✔ Accepts MedicareSame address

Ajanta Naidu, M.D.

Endocrinology

NPI 1093795684

UCI MEDICAL CENTER 101 THE CITY DRIVE, PAVILLION 1
Orange, CA 92868

(714) 456-7011

✔ PECOSSame address

Rebecca Ahdoot, M.D.

Nephrology

NPI 1851735211

101 THE CITY DR S
Orange, CA 92868

(714) 880-7812

✔ PECOS✔ Accepts MedicareSame address

Rosa Andrade, MD

Infectious Disease

NPI 1093919680

101 THE CITY DR S BLDG 29
Orange, CA 92868

(714) 456-7720

✔ PECOS✔ Accepts MedicareSame address

Elen Araya, FNP

Nurse Practitioner

NPI 1023225281

101 THE CITY DR S
Orange, CA 92868

(714) 880-7812

✔ PECOSSame address

Shirin Attarian, M.D.

Hematology/Oncology

NPI 1427310713

101 THE CITY DR S
Orange, CA 92868

(714) 456-8000

✔ PECOS✔ Accepts MedicareSame address

Matthew Butteri, M.D.

Hospitalist

NPI 1558488700

101 CITY DRIVE BLDG 26
Orange, CA 92868

(714) 456-5339

✔ PECOS✔ Accepts MedicareSame address

Wayne Chang, MD

Occupational Medicine

NPI 1306926076

101 THE CITY DR S
Orange, CA 92868

(714) 880-7812

✔ PECOSSame address

Frances Dang, MD

Gastroenterology

NPI 1225892219

101 THE CITY DR S BLDG 22C
Orange, CA 92868

(888) 717-4463

✔ PECOS✔ Accepts MedicareSame address

Michael Gibson, M.D.

Advanced Heart Failure and Transplant Cardiology

NPI 1881920882

101 THE CITY DR S
Orange, CA 92868

(714) 456-6699

✔ PECOS✔ Accepts MedicareSame address

Christopher Gilani, MD

Anesthesiology

NPI 1548720840

101 THE CITY DR S
Orange, CA 92868

(714) 456-5239

✔ PECOS✔ Accepts MedicareSame address

Jesse Goitia, M.D.

Cardiovascular Disease (Cardiology)

NPI 1013301290

101 THE CITY DR S
Orange, CA 92868

(714) 880-7812

✔ PECOS✔ Accepts MedicareSame address

Ryan Herring

Preventive Medicine

NPI 1255823993

101 THE CITY DR S
Orange, CA 92868

(714) 456-7890

✔ PECOS✔ Accepts MedicareSame address

Panch Jeyakumar, M.D.

Pulmonary Disease

NPI 1629047964

101 THE CITY DR S
Orange, CA 92868

(714) 880-7812

✔ PECOS✔ Accepts MedicareSame address

Jessica Kim, MD

Pediatric Medicine

NPI 1477086866

101 THE CITY DR S
Orange, CA 92868

(714) 456-7016

✔ PECOS✔ Accepts MedicareSame address

Sayeh Lavasani, MD

Medical Oncology

NPI 1205130572

101 THE CITY DR S
Orange, CA 92868

(714) 880-7812

✔ PECOS✔ Accepts MedicareSame address

Michael Rochon-Duck, M.D.

Cardiac Electrophysiology

NPI 1609168517

101 THE CITY DR S STE 400
Orange, CA 92868

(714) 456-6693

✔ PECOS✔ Accepts MedicareSame address

Robert Rowe, M.D.

Emergency Medicine

NPI 1043674682

101 THE CITY DR S
Orange, CA 92868

(714) 456-5239

✔ PECOS✔ Accepts MedicareSame address

See all 522 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 1619925153. It was assigned to this organization in the NPPES registry on May 5, 2006. The provider is doing business as Uci Department Of Medicine.

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 Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Uc Regents enrolled in Medicare?

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

How many clinicians bill Medicare through Uc Regents?

According to the CMS Revalidation Reassignment List (October 2026 release), 522 clinicians in 36 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 Internal Medicine (160), Nurse Practitioner (70) and Hematology/Oncology (46). Of these, 9 practice at this address and 302 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 August 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.