University of California Irvine
NPI 1184655581 · General Acute Care Hospital · Lakewood, CA
Enrolled with Medicare as Part a Provider - Hospital · source: CMS PECOS Public Provider Enrollment (2026.04.01)
University of California Irvine is a General Acute Care Hospital organization in Lakewood, CA (NPI 1184655581).
Provider details
- NPI number
- 1184655581
- Entity type
- Organization
- Primary specialty
- General Acute Care HospitalHospitals
- Parent organization
- University of California Irvi
- Organization subpart
- Yes
- Authorized official
- Randolph Siwabessy, Vice President and Chief Financial(714) 456-5180
- License
- 930000046 (CA)
Specialties & taxonomies
Hospitals
Profile Score
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
1 documented practice location
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
Mailing address
Other names (DBA / former)
- Doing business as
- Uci Health Lakewood
Registry dates
- Enumerated
- 2006-07-05
- Last updated
- 2024-07-18
- Certified
- 2024-07-18
Frequently asked questions
- What is University of California Irvine's NPI number?
- University of California Irvine's National Provider Identifier (NPI) is 1184655581, 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 3700 South St, Lakewood, CA 90712-1419.
- What is University of California Irvine's phone number?
- The practice phone number listed in the NPPES registry for University of California Irvine is (562) 531-2550.
- 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, Vice President and Chief Financial. 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 (1184655581) is active in the NPPES registry as of the last update on 2024-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.