What is University of California Irvine's NPI number?

University of California Irvine's National Provider Identifier (NPI) is 1689608150, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What type of organization is University of California Irvine?

University of California Irvine is classified in the NPPES registry as General Acute Care Hospital (Hospitals).

Where is University of California Irvine located?

University of California Irvine's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.

What is University of California Irvine's phone number?

The practice phone number listed in the NPPES registry for University of California Irvine is (714) 456-7890.

Does University of California Irvine accept Medicare?

University of California Irvine is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Who is the authorized official for University of California Irvine?

The authorized official listed on University of California Irvine's NPPES record is Randolph Siwabessy, Sr Vp and Cfo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.

Is University of California Irvine's NPI active?

Yes — University of California Irvine's NPI (1689608150) is active in the NPPES registry as of the last update on 2026-04-17.

OrganizationActiveAccepts Medicare

University of California Irvine

NPI 1689608150 · General Acute Care Hospital · Orange, CA

Enrolled with Medicare as Mdpp Supplier - In-Person Mdpp Supplier · source: CMS PECOS Public Provider Enrollment (2026.04.01)

University of California Irvine is a General Acute Care Hospital organization in Orange, CA (NPI 1689608150).

Provider details

NPI number: 1689608150
Entity type: Organization
Primary specialty: General Acute Care HospitalHospitals
Organization subpart: No
Authorized official: Randolph Siwabessy, Sr Vp and Cfo(714) 456-5180

Specialties & taxonomies

General Acute Care HospitalPrimary282N00000X
Hospitals
Adult Mental Health Clinic/Center261QM0850X
Ambulatory Health Care Facilities
Infusion Therapy Clinic/Center261QI0500X
Ambulatory Health Care Facilities
Multi-Specialty Clinic/Center261QM1300X
Ambulatory Health Care Facilities
Medical Specialty Clinic/Center261QM2500X
Ambulatory Health Care Facilities
Mental Health Clinic/Center (Including Community Mental Health Center)261QM0801X
Ambulatory Health Care Facilities
Clinic/Center261Q00000X

Profile Score

Detailed profile(100/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
22 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

101 the City Dr S

Orange, CA 92868-3201

Phone: (714) 456-7890

Fax: (714) 456-7339

Street-level locationGet directions

More CA providers

Mailing address

1900 S State College Blvd, Ste 400, Rt 183

Anaheim, CA 92806-6153

Other names (DBA / former)

Doing business as: Uci Health
Doing business as: Uci Health - Fountain Valley
Doing business as: Uci Health - Fountain Valley
Doing business as: Uci Health - Irvine
Doing business as: Uci Health - Lakewood
Doing business as: Uci Health - Los Alamitos
Doing business as: Uci Health - Orange
Doing business as: Uci Health - Placentia Linda
Doing business as: Uci Medical Center

Additional practice locations (21)

1640 Newport Blvd
Ste 400b
Costa Mesa, CA 92627-7745
Phone: (949) 386-5000
17100 Euclid St
Fountain Valley, CA 92708-4004
Phone: (714) 966-7200
11190 Warner Ave Ste 110
Fountain Valley, CA 92708-4028
Phone: (714) 431-0303
11250 Warner Ave Bldg E
Fountain Valley, CA 92708-4116
Phone: (714) 513-5590
1002 Health Sciences Rd
Irvine, CA 92617-3010
Phone: (949) 824-7997
850 Health Sciences Rd
Irvine, CA 92617-3058
Phone: (949) 824-2020
1 Medical Plaza Dr
Irvine, CA 92697
Phone: (949) 824-8600
19200 Jamboree Rd
Irvine, CA 92612-2570
Phone: (714) 456-7002
19208 Jamboree Rd
Irvine, CA 92612
Phone: (714) 361-1732

Enumerated: 2006-07-10
Last updated: 2026-04-17
Certified: 2026-04-17

Frequently asked questions

What is University of California Irvine's NPI number?: University of California Irvine's National Provider Identifier (NPI) is 1689608150, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What type of organization is University of California Irvine?: University of California Irvine is classified in the NPPES registry as General Acute Care Hospital (Hospitals).
Where is University of California Irvine located?: University of California Irvine's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
What is University of California Irvine's phone number?: The practice phone number listed in the NPPES registry for University of California Irvine is (714) 456-7890.
Does University of California Irvine accept Medicare?: University of California Irvine is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Who is the authorized official for University of California Irvine?: The authorized official listed on University of California Irvine's NPPES record is Randolph Siwabessy, Sr Vp and Cfo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
Is University of California Irvine's NPI active?: Yes — University of California Irvine's NPI (1689608150) is active in the NPPES registry as of the last update on 2026-04-17.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.