NPPES file of Aug 9, 2026

Kevin Oei

Family Medicine Physician · Downey, CA

Kevin Oei is a family medicine physician with a practice address in Downey, California, and NPI 1063816809, issued on Oct 21, 2014. Check the license (California 20A13597, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1063816809
Name
Kevin Oei
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
20A13597 CA
Self-reported in NPPES; status is on the state search
Practice location
11500 Brookshire Ave, Downey, CA 90241
Phone
(562) 904-5000
Enumerated
Oct 21, 2014
Record last updated
Oct 21, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20161129001649); accepts 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 11500 Brookshire Ave

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

  1. Ava Azimi, M.D.Internal Medicine Physician1023252483
  2. Cristionne Barbarin, LCSWClinical Social Worker1942685342
  3. Ivan Barrett, M.D.Diagnostic Radiology Physician1073571113
  4. Tyana Besada, MSN, RN, CNS, CCRNClinical Nurse Specialist1932056231
  5. Payal Bhowmick, PHARMDPharmacotherapy Pharmacist1518783661
  6. Alexis BoltonFamily Nurse Practitioner1215546197

Verify Kevin Oei in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A13597
    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
Open 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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96% fewer Medicare Part D claims than the average family medicine physician in 2024

138 Medicare Part D claims for 112 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Kevin Oei138
  2. Specialty average3,544

Most prescribed

  1. Cephalexin16 claims
  2. Fluticasone Propionate12 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 76.3 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.

  1. Qualityout of 100 · 30% of the final score62.7
  2. Costout of 100 · 30%59.3
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $3,352.85

27 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kevin Oei$3,352.85
  2. Specialty average$902.55

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

Bills Medicare through one group practice

  1. Pih Health PhysiciansWhittier, CA

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

Kevin Oei among 17,133 family medicine physician records in California

Kevin Oei is one of 17,133 family medicine physician records with a practice address in California. 81% 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 71% of them.

  • NPI issued2014 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2013 · median 2005 among the 10,652 with a school on file
  • Record last updated2014 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

65 family medicine physician records list a practice address in Downey

They are 65 of the 3,607 NPPES records with a practice address in Downey, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Matthew Blazon Yee, DODowney, CA 902411710043328
  2. Sherie Carnegie, D ODowney, CA 902411821013772
  3. Simon Chang, M.D.Downey, CA 902411760594097
  4. Andrew Chao, D.O.Downey, CA 902411780621755
  5. Thilan Fernando, M.D.Downey, CA 902411316146632
  6. Ole Heggeness, D.O.Downey, CA 902411518911908
  7. Ragaa Iskarous, M.D.Downey, CA 902411215035274
  8. Antonio Morquecho, PADowney, CA 902411417173220

Common questions

What is Kevin Oei's NPI number?

Kevin Oei's National Provider Identifier (NPI) is 1063816809, issued on Oct 21, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Kevin Oei located?

The NPPES record lists a practice address at 11500 Brookshire Ave, Downey, CA, 90241. Phone: (562) 904-5000. Providers update this record themselves, so call before visiting.

How can I verify Kevin Oei's license?

NPPES lists California license number 20A13597, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Kevin Oei prescribe under Medicare Part D?

In 2024, Kevin Oei had 138 Medicare Part D claims for 112 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

What is Kevin Oei's MIPS final score?

The 2023 MIPS final score is 76.3 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.