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MRS. IRENE KAJIYA NAGEL P.A.-C
NPI 1255447496
Physician Assistant - Surgical in Fountain Valley, CA

Active since August 21, 2006PECOS EnrolledAccepts Medicare Assignment
76.74/100
CMS Quality Rating
18035 BROOKHURST ST., SUITE 1300, FOUNTAIN VALLEY, CA 92708(657) 241-9440(714) 665-4601 Get Directions Write a Review

NPPES record last updated: June 27, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jun 27, 2025, Mar 3, 2023, Mar 17, 2016 (3 updates tracked since 2016).

About Mrs. Irene Kajiya Nagel P.a.-c NPPES

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

MRS. IRENE KAJIYA NAGEL P.A.-C (NPI 1255447496) is an individual surgical provider in Fountain Valley, California, licensed in California (PA 15487) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Good Samaritan Regional Medical Center, and is a graduate of Other (2000).

NPPES Registry Identity

NPI1255447496
Entity TypeIndividualFemale
Primary Taxonomy363AS0400X
Provider Legal NameMRS. IRENE KAJIYA NAGELCredential: P.A.-C
Location Address18035 BROOKHURST ST., SUITE 1300Fountain Valley, CA 92708
Mailing Address18035 Brookhurst St., Suite 1300Fountain Valley, CA 92708 · (657) 241-9440 · Fax (714) 665-4601
Phone(657) 241-9440
Fax(714) 665-4601
Sole ProprietorNo
Medical School CMSOtherGraduated 2000
Enumeration DateAugust 21, 2006
Last NPPES UpdateJune 27, 20253 updates tracked since enumeration
NPPES CertifiedJune 27, 2025
✔ NPI 1255447496 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPhysician Assistant · SurgicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AS0400X
License✔ Licensed in CA · PA 15487
Also ListedPhysician AssistantTaxonomy 363A00000X · License PA225076 (OR)
18035 BROOKHURST ST., SUITE 1300, Fountain Valley, CA 92708
Open in Google Maps ↗

Other Names 1

Former Name (1)Irene Aiko Kajiya P.a.-c

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mrs. Irene Kajiya Nagel P.a.-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9234194168
PECOS Enrollment IDI20250602000612
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Good Samaritan Regional Medical Center

Acute Care Hospitals · Corvallis, OR
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380014
Location3600 NW Samaritan DriveCorvallis, OR 97330 · Benton County
Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.74/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality80.94
Promoting Interoperability78
Improvement Activities40
Cost55.12

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 Irene Nagel's NPI number?

The NPI number for Irene Nagel is 1255447496. It was assigned to this individual provider in the NPPES registry on August 21, 2006. The provider is also known as Irene Aiko Kajiya P.A.-C.

Where is Irene Nagel located?

Irene Nagel practices at 18035 Brookhurst St., Suite 1300, Fountain Valley, CA 92708. The listed phone number is (657) 241-9440.

What is Irene Nagel's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Surgical, with taxonomy code 363AS0400X.

Is Irene Nagel enrolled in Medicare?

Yes. Irene Nagel is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Irene Nagel accept?

Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and Regence BlueCross BlueShield of Oregon list Irene Nagel as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Irene Nagel affiliated with any hospitals?

According to CMS data, Irene Nagel is affiliated with Good Samaritan Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Irene Nagel was last updated on June 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.