NPPES file of Aug 9, 2026

Michael Mesirow, PA-C

Physician Assistant · Berwyn, IL

Michael Mesirow, PA-C is a physician assistant with a practice address in Berwyn, Illinois, and NPI 1487150629, issued on Apr 5, 2018. Check the license (Illinois 085.006505, as entered in NPPES) 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
1487150629
Name
Michael Mesirow
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
085.006505 IL
Self-reported in NPPES; status is on the state search
Practice location
2550 Oak Park Ave, Berwyn, IL 60402
Phone
(708) 575-6757
Enumerated
Apr 5, 2018
Record last updated
Mar 5, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2550 Oak Park Ave

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

  1. Diane Garrison, DDSGeneral Practice Dentistry1265588503
  2. Chanel Mesch, FNPFamily Nurse Practitioner1487151304
  3. Claudia Roldan, FNPFamily Nurse Practitioner1801557319

Verify Michael Mesirow in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 085.006505
    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
Find the Illinois license search

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97% fewer Medicare Part D claims than the average physician assistant in 2024

23 Medicare Part D claims, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.

  1. Michael Mesirow23
  2. Specialty average830

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.

Michael Mesirow among 4,926 physician assistant records in Illinois

Michael Mesirow, PA-C 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 2018, is newer than 48% of them.

  • NPI issued2018 · 48% of these records are older, 47% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2025 · 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).

16 physician assistant records list a practice address in Berwyn

They are 16 of the 1,031 NPPES records with a practice address in Berwyn, and 4,926 physician assistant records in Illinois.

The 8 physician assistant records with the nearest ZIP codes

  1. Sumayyah Ahmed, PA-CBerwyn, IL 604021851084206
  2. Margaret Chao, PABerwyn, IL 604021780889238
  3. Brigette Chelchowski, PA-CBerwyn, IL 604021740808633
  4. Ellen Harris, PABerwyn, IL 604021619998895
  5. Jorge Hernandez, PHYSICIAN ASSISTANTBerwyn, IL 604021013768654
  6. Celesia Leonard, PA-CBerwyn, IL 604021609878370
  7. Michelle Levine, PA-CBerwyn, IL 604021780214528
  8. Shachi PatelBerwyn, IL 604021326642109

Common questions

What is Michael Mesirow, PA-C's NPI number?

Michael Mesirow, PA-C's National Provider Identifier (NPI) is 1487150629, issued on Apr 5, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Michael Mesirow, PA-C located?

The NPPES record lists a practice address at 2550 Oak Park Ave, Berwyn, IL, 60402. Phone: (708) 575-6757. Providers update this record themselves, so call before visiting.

How can I verify Michael Mesirow, PA-C's license?

NPPES lists Illinois license number 085.006505, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Michael Mesirow, PA-C prescribe under Medicare Part D?

In 2024, Michael Mesirow, PA-C had 23 Medicare Part D claims; 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.