NPPES file of Aug 9, 2026

Olga Neonila Popel, MD

Rheumatology Physician · Westlake Village, CA

Olga Neonila Popel, MD is a rheumatology physician with a practice address in Westlake Village, California, and NPI 1265518054, issued on Oct 27, 2006. Check the license (California G42577, 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
1265518054
Name
Olga Neonila Popel
Credential
MD
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
G42577 CA
Self-reported in NPPES; status is on the state search
Practice location
1250 LA Venta Dr Ste 211, Westlake Village, CA 91361
Phone
(805) 494-6920
Enumerated
Oct 27, 2006
Record last updated
Sep 6, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(805) 494-6922
Medicare enrollment
Enrolled (PECOS I20040322001479); accepts Medicare assignment
Medical or professional school
University Of North Dakota School Of Medicine, 1979
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 1250 LA Venta Dr Ste 211

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

  1. Shahryar Ashouri, M.D.Hematology & Oncology Physician1609946169

Verify Olga Neonila Popel in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G42577
    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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37% fewer Medicare Part D claims than the average rheumatology physician in 2024

1,247 Medicare Part D claims for 244 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 72 claims were for opioids.

  1. Olga Popel1,247
  2. Specialty average1,978

Most prescribed

  1. Prednisone132 claims
  2. Hydroxychloroquine Sulfate112 claims
  3. Methotrexate105 claims
  4. Gabapentin84 claims
  5. Meloxicam76 claims
  6. Allopurinol68 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): 86.1 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 score82.9
  2. Costout of 100 · 30%66.7
  3. Promoting interoperabilityout of 100 · 25%100.0
  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).

Bills Medicare through one group practice

  1. The Regents OF The University OF CaliforniaLos Angeles, CA

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

Rheumatology Physician providers in California

There are 926 rheumatology physician records in California.

Other rheumatology physician records in California

  1. Khurram Abbass, MDSan Jose, CA1154455178
  2. Mai Abdelnabi, MDSan Francisco, CA1013394980
  3. Brian Abe, MD, PHDStanford, CA1104262708
  4. Thomas Abel, MDMonte Sereno, CA1871679399
  5. Feruza AbraamyanRoseville, CA1124769278
  6. Thomas Adamson, M.D.San Diego, CA1639187057
  7. Sana Afroz, MDMoreno Valley, CA1356724074
  8. Ishita Aggarwal, MDSan Francisco, CA1518385699
  9. Atul Agrawal, MDAntioch, CA1528146016
  10. Bikramjit Ahluwalia, MDApple Valley, CA1669402467

Common questions

What is Olga Neonila Popel, MD's NPI number?

Olga Neonila Popel, MD's National Provider Identifier (NPI) is 1265518054, issued on Oct 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Olga Neonila Popel, MD located?

The NPPES record lists a practice address at 1250 LA Venta Dr Ste 211, Westlake Village, CA, 91361. Phone: (805) 494-6920. Providers update this record themselves, so call before visiting.

How can I verify Olga Neonila Popel, MD's license?

NPPES lists California license number G42577, 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 Olga Neonila Popel, MD prescribe under Medicare Part D?

In 2024, Olga Neonila Popel, MD had 1,247 Medicare Part D claims for 244 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.

What is Olga Neonila Popel, MD's MIPS final score?

The 2023 MIPS final score is 86.1 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.