UNIVERSITY OF CALIFORNIA IRVINE
NPI 1689608150
General Acute Care Hospital in Orange, CA

NPI Status: Active since July 10, 2006

Contact Information

101 THE CITY DR S
ORANGE, CA
ZIP 92868
Phone: (714) 456-7890
Fax: (714) 456-7339

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  • Organization
  • General Acute Care Hospital

About UNIVERSITY OF CALIFORNIA IRVINE

This page provides the complete NPI Profile along with additional information for University Of California Irvine, a provider established in Orange, California operating as a General Acute Care Hospital. The healthcare provider is registered in the NPI registry with number 1689608150 assigned on July 2006. The practitioner's primary taxonomy code is 282N00000X. The provider is registered as an organization and their NPI record was last updated April 2026. The provider's . The authorized official of this NPI record is Randolph Siwabessy (Sr Vp And Cfo)

NPI
1689608150
Provider Legal Name
UNIVERSITY OF CALIFORNIA IRVINE
Other Organization Name
Other Name Type
(6)
Entity Type
Organization
Location Address
101 THE CITY DR S ORANGE, CA 92868
Location Phone
(714) 456-7890
Location Fax
(714) 456-7339
Mailing Address
1900 S STATE COLLEGE BLVD, STE 400, RT 183 ANAHEIM, CA 92806
Mailing Phone
(714) 456-7890
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
07-10-2006
Last Update Date
04-17-2026
Code Navigator

Location Map

Secondary Locations

  • 1640 NEWPORT BLVD STE 400B
    COSTA MESA, CA 92627
    (949) 386-5000
  • 19210 Jamboree Rd
    Irvine, CA 92612
    (714) 456-7002
  • 1002 HEALTH SCIENCES RD
    IRVINE, CA 92617
    (949) 824-7997
  • 11250 Warner Ave Bldg E
    Fountain Valley, CA 92708
    (714) 513-5590
  • 1325 N Rose Dr Ste 100
    Placentia, CA 92870
    (714) 961-5990
  • 1301 N Rose Dr
    Placentia, CA 92870
    (714) 993-2000
  • 19200 Jamboree Rd
    Irvine, CA 92612
    (714) 456-7002
  • 19208 Jamboree Rd
    Irvine, CA 92612
    (714) 361-1732
  • 17100 Euclid St
    Fountain Valley, CA 92708
    (714) 966-7200
  • 23961 CALLE DE LA MAGDALENA STE 200
    LAGUNA HILLS, CA 92653
    (949) 238-4100
  • 1041 E Yorba Linda Blvd Ste 203
    Placentia, CA 92870
    (714) 985-9110
  • 3800 W CHAPMAN AVE STE 500
    ORANGE, CA 92868
    (714) 456-5902
  • 850 HEALTH SCIENCES RD
    IRVINE, CA 92617
    (949) 824-2020
  • 3751 Katella Ave
    Los Alamitos, CA 90720
    (562) 598-1311
  • 18635 YORBA LINDA BLVD
    YORBA LINDA, CA 92886
    (714) 790-8600
  • 1 MEDICAL PLAZA DR
    IRVINE, CA 92697
    (949) 824-8600
  • 11190 Warner Ave Ste 110
    Fountain Valley, CA 92708
    (714) 431-0303
  • 3700 South St
    Lakewood, CA 90712
    (562) 531-2550
  • 200 S MANCHESTER AVE STE 200
    ORANGE, CA 92868
    (714) 456-7890
  • 10861 Cherry St
    Los Alamitos, CA 90720
    (562) 799-3134
  • 3951 Katella Ave
    Los Alamitos, CA 90720
    (562) 799-3126

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

General Acute Care Hospital

Taxonomy Code
282N00000X
Type
Hospitals
License State
CA
Taxonomy Description
An acute general hospital is an institution whose primary function is to provide inpatient diagnostic and therapeutic services for a variety of medical conditions, both surgical and non-surgical, to a wide population group. The hospital treats patients in an acute phase of illness or injury, characterized by a single episode or a fairly short duration, from which the patient returns to his or her normal or previous level of activity.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1261Q00000XAmbulatory Health Care Facilities

Clinic/Center

 
2261QH0100XAmbulatory Health Care Facilities

Clinic/Center
Health Service

 
3261QI0500XAmbulatory Health Care Facilities

Clinic/Center
Infusion Therapy

 
4261QM0801XAmbulatory Health Care Facilities

Clinic/Center
Mental Health (Including Community Mental Health Center)

 
5261QM0850XAmbulatory Health Care Facilities

Clinic/Center
Adult Mental Health

 
6261QM0855XAmbulatory Health Care Facilities

Clinic/Center
Adolescent and Children Mental Health

 
7261QM1300XAmbulatory Health Care Facilities

Clinic/Center
Multi-Specialty

 
8261QM2500XAmbulatory Health Care Facilities

Clinic/Center
Medical Specialty

 

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

RANDOLPH SIWABESSY

Authorized Official Title
SR VP AND CFO
Authorized Official Phone
(714) 456-5180

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
HSC30348GMEDICAID (05)CA 
HSC30348WMEDICAID (05)CA 
ZZT40348GMEDICAID (05)CA 
ZZT30348GMEDICAID (05)CA 
ZZT40348WMEDICAID (05)CA 
ZZT30348WMEDICAID (05)CA 

Reviews for UNIVERSITY OF CALIFORNIA IRVINE

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1689608150, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
9
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
0
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
1
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
0
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 8 → 16 → 7 6 → 12 → 3 8 → 16 → 7 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 6 + 1 + 6 + 9 + 1 + 2 + 0 + 1 + 6 + 1 + 1 + 0 + 24 = 60

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 60 is 60. The difference is the calculated check digit.

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1689608150.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
101 THE CITY DR S
ORANGE, CA 92868
Internal Medicine (Rheumatology)
101 THE CITY DR S
ORANGE, CA 92868
Genetic Counselor, MS
101 THE CITY DR S, DEPARTMENT OF PEDIATRICS
ORANGE, CA 92868
Urology
101 THE CITY DR S
ORANGE, CA 92868
Nurse Anesthetist, Certified Registered
101 THE CITY DR S
ORANGE, CA 92868
Surgery
101 THE CITY DR S
ORANGE, CA 92868
Pediatrics (Pediatric Nephrology)
101 THE CITY DR S, BLDG. 56, SUITE 600
ORANGE, CA 92868
Otolaryngology (Otology & Neurotology)
101 THE CITY DR S, BLDG 56, SUITE 500 RTE 81
ORANGE, CA 92868
Anesthesiology
101 THE CITY DR S
ORANGE, CA 92868
Pediatrics (Neurodevelopmental Disabilities)
101 THE CITY DR S
ORANGE, CA 92868
Psychiatry & Neurology (Neurology)
101 THE CITY DR S
ORANGE, CA 92868
Internal Medicine
101 THE CITY DR S
ORANGE, CA 92868
Urology
101 THE CITY DR S
ORANGE, CA 92868
Pediatrics
101 THE CITY DR S
ORANGE, CA 92868
Anesthesiology
101 THE CITY DR S
ORANGE, CA 92868
Nurse Anesthetist, Certified Registered
101 THE CITY DR S
ORANGE, CA 92868
Emergency Medicine
101 THE CITY DR S
ORANGE, CA 92868
Internal Medicine (Hematology & Oncology)
101 THE CITY DR S
ORANGE, CA 92868
Internal Medicine (Infectious Disease)
101 THE CITY DR S
ORANGE, CA 92868

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1689608150, enumerated as an "organization" on July 10, 2006.

The provider is located at 101 THE CITY DR S ORANGE, CA 92868 and the phone number is (714) 456-7890.

General Acute Care Hospital with taxonomy code 282N00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.