NPPES file of Aug 9, 2026

Oksana Lelyukh Kostyukevich, PA-C

Physician Assistant · Downey, CA

Oksana Lelyukh Kostyukevich, PA-C is a physician assistant with a practice address in Downey, California, and NPI 1720768898, issued on Jul 24, 2023. Check the license 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
1720768898
Name
Oksana Lelyukh Kostyukevich
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
Practice location
11938 Paramount Blvd, Downey, CA 90242
Phone
(562) 923-6060
Enumerated
Jul 24, 2023
Record last updated
Aug 7, 2026
Fax
(562) 923-6601
Medicare enrollment
Enrolled (PECOS I20240913001477); may accept Medicare assignment
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 11938 Paramount Blvd

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

  1. Ifeoma AniemekaFamily Nurse Practitioner1649804386
  2. Winifred Ezenwa, NURSE PRACTITIONERFamily Nurse Practitioner1265995260
  3. Dominique Gillyard, DNPFamily Nurse Practitioner1710791082
  4. Betty LaPhysician Assistant1982568457
  5. Elaine Lau, DDSDentist1124131487
  6. Helen NjokuNurse Practitioner1528692217

Verify Oksana Lelyukh Kostyukevich in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
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56% fewer Medicare Part D claims than the average physician assistant in 2024

365 Medicare Part D claims for 175 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.

  1. Oksana Kostyukevich365
  2. Specialty average830

Most prescribed

  1. Azithromycin44 claims
  2. Fluticasone Propionate29 claims
  3. Lidocaine Hcl Viscous22 claims
  4. Nitrofurantoin Mono-Macro21 claims
  5. Ibuprofen16 claims
  6. Albuterol Sulfate Hfa14 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: $1,078.77

7 payments; by number, the most common kind was food and beverage; the largest payer was Silk Road Medical, Inc. 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. Oksana Kostyukevich$1,078.77
  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.

Oksana Lelyukh Kostyukevich among 14,451 physician assistant records in California

Oksana Lelyukh Kostyukevich, 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 2023, is newer than 80% of them.

  • NPI issued2023 · 80% of these records are older, 13% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2022 · 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. Hilarie Beattie, PADowney, CA 902421215053459
  2. Robert Boucher, PADowney, CA 902421144364340
  3. Chris Ediss, PA-CDowney, CA 902421639374671
  4. Deniche Francis, PA-CDowney, CA 902421205044104
  5. Dudley FukunagaDowney, CA 902421629219282
  6. Mondana Hatzidakis, PA-CDowney, CA 902421689820037
  7. Joan McCormac, PACDowney, CA 902421457556490
  8. Roberto Mendoza, P.A.Downey, CA 902421669403150

Common questions

What is Oksana Lelyukh Kostyukevich, PA-C's NPI number?

Oksana Lelyukh Kostyukevich, PA-C's National Provider Identifier (NPI) is 1720768898, issued on Jul 24, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Oksana Lelyukh Kostyukevich, PA-C located?

The NPPES record lists a practice address at 11938 Paramount Blvd, Downey, CA, 90242. Phone: (562) 923-6060. Providers update this record themselves, so call before visiting.

How can I verify Oksana Lelyukh Kostyukevich, PA-C's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Oksana Lelyukh Kostyukevich, PA-C prescribe under Medicare Part D?

In 2024, Oksana Lelyukh Kostyukevich, PA-C had 365 Medicare Part D claims for 175 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.