Irene Kajiya Nagel, P.A.-C
Surgical Physician Assistant · Fountain Valley, CA
Irene Kajiya Nagel, P.A.-C is a surgical physician assistant with a practice address in Fountain Valley, California, and NPI 1255447496, issued on Aug 21, 2006. Check the license (California PA 15487, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Irene Kajiya Nagel
- Credential
- P.A.-C
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License numbers
- PA 15487 CA
PA225076 OR
Self-reported in NPPES; status is on the state search - Practice location
- 18035 Brookhurst St., Suite 1300, Fountain Valley, CA 92708
- Phone
- (657) 241-9440
- Enumerated
- Aug 21, 2006
- Record last updated
- Jun 27, 2025
- Fax
- (714) 665-4601
- Medicare enrollment
- Enrolled (PECOS I20250602000612); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Irene Kajiya Nagel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA 15487Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average surgical physician assistant in 2024
14 Medicare Part D claims, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,314.00
21 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 7,578 providers of this specialty with any payment received $703.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Surgical Physician Assistant providers in California
There are 1,075 surgical physician assistant records in California.
All 1,075 in California → Every provider in Fountain Valley →
Other surgical physician assistant records in California
- Brooke Aber, P.A.Pleasant Hill, CA1790716074
- Brooke Abrantes, PA-CMountain View, CA1316771298
- Jory Adam, PA-CGreenbrae, CA1922269521
- Zulhumar Adil, PA-CFullerton, CA1578328043
- Neil Adler, PASan Jose, CA1447223276
- Lauren Aguilar, PAFresno, CA1518822022
- Maria Eugenia Aguilar H., PACMonterrey Park, CA1427276799
- Dzevahira Ahmetspahic, PA-CSan Leandro, CA1578601613
- James Aicardi, PA-CSan Francisco, CA1528557568
- Songolaye Akinloye, P.A.Los Angeles, CA1487781043
Common questions
What is Irene Kajiya Nagel, P.A.-C's NPI number?
Irene Kajiya Nagel, P.A.-C's National Provider Identifier (NPI) is 1255447496, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irene Kajiya Nagel, P.A.-C located?
The NPPES record lists a practice address at 18035 Brookhurst St., Suite 1300, Fountain Valley, CA, 92708. Phone: (657) 241-9440. Providers update this record themselves, so call before visiting.
How can I verify Irene Kajiya Nagel, P.A.-C's license?
NPPES lists California license number PA 15487, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Irene Kajiya Nagel, P.A.-C prescribe under Medicare Part D?
In 2024, Irene Kajiya Nagel, P.A.-C had 14 Medicare Part D claims; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions only.
What is Irene Kajiya Nagel, P.A.-C's MIPS final score?
The 2023 MIPS final score is 76.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.