NPPES file of Aug 9, 2026

Violetta S. Karpova, MD

Diagnostic Radiology Physician · Duarte, CA

Violetta S. Karpova, MD is a diagnostic radiology physician with a practice address in Duarte, California, and NPI 1588981914, issued on Apr 25, 2010. Check the license (California A142447, 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
1588981914
Name
Violetta S. Karpova
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License numbers
A142447 CA
56244-020 WI
Self-reported in NPPES; status is on the state search
Practice location
1500 E Duarte Road, Duarte, CA 91010
Phone
(626) 256-4673
Enumerated
Apr 25, 2010
Record last updated
Jul 8, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20160804001833); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 2010
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 1500 E Duarte Road

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

  1. Idoroenyi Amanam, M.D.Hematology (Internal Medicine) Physician1205257920
  2. Andrew Artz, M.D., M.S.Hematology (Internal Medicine) Physician1306859772
  3. Brian Bowman, N.P.Gerontology Nurse Practitioner1770971418
  4. Ernest Han, MDGynecologic Oncology Physician1639247950
  5. Gregory Idos, M.D.Gastroenterology Physician1770769937
  6. Paul Koller, M.D.Hematology (Internal Medicine) Physician1720340169

Verify Violetta S. Karpova in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A142447
    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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The practice group's MIPS final score for 2023 (Medicare payment program): 99.1 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 score85.2
  2. Costnot scored (reweighted)
  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).

Industry payments in 2024: $5.00

1 payment: food and beverage; the largest payer was Merit Medical Systems Inc. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Violetta Karpova$5.00
  2. Specialty average$2,488.38

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. City OF Hope Medical FoundationIrvine, CA

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

Violetta S. Karpova among 4,500 diagnostic radiology physician records in California

Violetta S. Karpova, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 67% of them.

  • NPI issued2010 · 67% of these records are older, 30% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2010 · median 2004 among the 3,130 with a school on file
  • Record last updated2021 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

29 diagnostic radiology physician records list a practice address in Duarte

They are 29 of the 1,287 NPPES records with a practice address in Duarte, and 4,500 diagnostic radiology physician records in California.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. William Boswell, M.D.Duarte, CA 910101548209612
  2. Bihong Chen, MDDuarte, CA 910101790861540
  3. Mark Esensten, MDDuarte, CA 910101346271012
  4. John Hogan, MDDuarte, CA 910101780641480
  5. Alexander Jung, MDDuarte, CA 910101285766006
  6. Shana Landau, M.D.Duarte, CA 910101437190915
  7. Eva Luo, MDDuarte, CA 910101649347535
  8. Rizvan Mirza, M.D.Duarte, CA 910101972517084

Common questions

What is Violetta S. Karpova, MD's NPI number?

Violetta S. Karpova, MD's National Provider Identifier (NPI) is 1588981914, issued on Apr 25, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Violetta S. Karpova, MD located?

The NPPES record lists a practice address at 1500 E Duarte Road, Duarte, CA, 91010. Phone: (626) 256-4673. Providers update this record themselves, so call before visiting.

How can I verify Violetta S. Karpova, MD's license?

NPPES lists California license number A142447, 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.

What is Violetta S. Karpova, MD's MIPS final score?

The 2023 MIPS final score is 99.1 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.