NPPES file of Aug 9, 2026

Claire Fischer

Physician Assistant · Wheaton, IL

Claire Fischer is a physician assistant with a practice address in Wheaton, Illinois, and NPI 1265199004, issued on Nov 28, 2021. Check the license with the Illinois 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
1265199004
Name
Claire Fischer
Primary taxonomy
Physician Assistant 363A00000X
Practice location
901 E Willow Ave, Wheaton, IL 60187
Phone
(312) 524-0721
Enumerated
Nov 28, 2021
Record last updated
Sep 20, 2022
Medicare enrollment
Enrolled (PECOS I20221123000776); accepts Medicare assignment
Medical or professional school
R Franklin University Of Med & Sci/Chicago Medical School, 2022
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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Verify Claire Fischer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois 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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60% fewer Medicare Part D claims than the average physician assistant in 2024

333 Medicare Part D claims for 79 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 13 claims were for opioids.

  1. Claire Fischer333
  2. Specialty average830

Most prescribed

  1. Pantoprazole Sodium37 claims
  2. Eliquis36 claims
  3. Isosorbide Dinitrate27 claims
  4. Torsemide27 claims
  5. Sertraline Hcl20 claims
  6. Metoprolol Succinate13 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.

Bills Medicare through one group practice

  1. United Elite Hospitalists LLCPalos Heights, IL

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

Claire Fischer among 4,926 physician assistant records in Illinois

Claire Fischer is one of 4,926 physician assistant records with a practice address in Illinois. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 66% of them.

  • NPI issued2021 · 66% of these records are older, 29% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2022 · median 2019 among the 3,407 with a school on file
  • Record last updated2022 · 35% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

29 physician assistant records list a practice address in Wheaton

They are 29 of the 2,468 NPPES records with a practice address in Wheaton, and 4,926 physician assistant records in Illinois.

The 8 physician assistant records with the nearest ZIP codes

  1. Greta Abel, PA-CWheaton, IL 601871174844096
  2. Lena Draus, PA-CWheaton, IL 601871891376422
  3. Deborah Horne, PACWheaton, IL 601871043272875
  4. Isha Kothari, P.A.Wheaton, IL 601871154629541
  5. Kathryn Lovell, PA-CWheaton, IL 601871881106359
  6. Sana Abbasi, PACarol Stream, IL 601881831803295
  7. Anthony Adeniran, MDCarol Stream, IL 601881275840357
  8. Cathleen Brindl, PA-CCarol Stream, IL 601881558385831

Common questions

What is Claire Fischer's NPI number?

Claire Fischer's National Provider Identifier (NPI) is 1265199004, issued on Nov 28, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Claire Fischer located?

The NPPES record lists a practice address at 901 E Willow Ave, Wheaton, IL, 60187. Phone: (312) 524-0721. Providers update this record themselves, so call before visiting.

How can I verify Claire Fischer's license?

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

How much does Claire Fischer prescribe under Medicare Part D?

In 2024, Claire Fischer had 333 Medicare Part D claims for 79 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.