NPPES file of Aug 9, 2026

Eriko Nakajima, PA-C

Physician Assistant · Downey, CA

Eriko Nakajima, PA-C is a physician assistant with a practice address in Downey, California, and NPI 1528481421, issued on Jan 28, 2014. Check the license (California 51337, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1528481421
Name
Eriko Nakajima
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
51337 CA
Self-reported in NPPES; status is on the state search
Practice location
11480 Brookshire Ave, Downey, CA 90241
Phone
(562) 869-1201
Enumerated
Jan 28, 2014
Record last updated
Feb 6, 2026
Medicare enrollment
Enrolled (PECOS I20150515001947); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 11480 Brookshire Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Richy Agajanian, M.D.Hematology & Oncology Physician1922116664
  2. Nelly Awkar Lazo, M.DHematology & Oncology Physician1326351537
  3. Elias Ayoub, M.D.Otolaryngology Physician1568400885
  4. David Berger, MDEndocrinology, Diabetes & Metabolism Physician1881683944
  5. Chaiyaporn Boonchalermvichian, MDHematology & Oncology Physician1801046867
  6. Gaurang Chaurushia, MDGastroenterology Physician1538126131

Verify Eriko Nakajima in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 51337
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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92% more Medicare Part D claims than the average physician assistant in 2024

1,590 Medicare Part D claims for 286 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims. 34 claims were for opioids.

  1. Eriko Nakajima1,590
  2. Specialty average830

Most prescribed

  1. Letrozole180 claims
  2. Alendronate Sodium124 claims
  3. Anastrozole66 claims
  4. Exemestane49 claims
  5. Tagrisso47 claims
  6. Prednisone43 claims

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.

Industry payments in 2024: $7,273.35

242 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Eriko Nakajima$7,273.35
  2. Specialty average$841.65

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. City OF Hope Medical FoundationDuarte, CA
  2. The Oncology Institute CA, A Professional CorporationAlhambra, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Eriko Nakajima among 14,451 physician assistant records in California

Eriko Nakajima, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 38% of them.

  • NPI issued2014 · 38% of these records are older, 59% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2013 · median 2018 among the 7,214 with a school on file
  • Record last updated2026 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

49 physician assistant records list a practice address in Downey

They are 49 of the 3,607 NPPES records with a practice address in Downey, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Yasmin AlaranDowney, CA 902411962045922
  2. Deanna ChircoDowney, CA 902411487678405
  3. Thuy Dang, PA-CDowney, CA 902411992172696
  4. Lauren Gillan, PA-CDowney, CA 902411174802698
  5. Heidi Groessl, PACDowney, CA 902411417086026
  6. James Hager, PA-CDowney, CA 902411205805868
  7. Kevin Liu, PA-CDowney, CA 902411275109787
  8. Esther OpokuDowney, CA 902411881235968

Common questions

What is Eriko Nakajima, PA-C's NPI number?

Eriko Nakajima, PA-C's National Provider Identifier (NPI) is 1528481421, issued on Jan 28, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Eriko Nakajima, PA-C located?

The NPPES record lists a practice address at 11480 Brookshire Ave, Downey, CA, 90241. Phone: (562) 869-1201. Providers update this record themselves, so call before visiting.

How can I verify Eriko Nakajima, PA-C's license?

NPPES lists California license number 51337, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Eriko Nakajima, PA-C prescribe under Medicare Part D?

In 2024, Eriko Nakajima, PA-C had 1,590 Medicare Part D claims for 286 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

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.