NPPES file of Aug 9, 2026

Jonah D. Fleisher, MD

Obstetrics & Gynecology Physician · Chicago, IL

Jonah D. Fleisher, MD is an obstetrics & gynecology physician with a practice address in Chicago, Illinois, and NPI 1063648632, issued on Jun 9, 2009. Check the license (Illinois 036.143320, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1063648632
Name
Jonah D. Fleisher
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License numbers
036.143320 IL
274112 NY
MD449108 PA
Self-reported in NPPES; status is on the state search
Practice location
1801 W Taylor St, M/C 650, Chicago, IL 60612
Phone
(312) 413-7500
Enumerated
Jun 9, 2009
Record last updated
Jul 21, 2022
Medicaid ID
1028348820001 NY
Medicare enrollment
Enrolled (PECOS I20171009002614); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 2009
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 Jonah D. Fleisher in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036.143320
    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 Illinois 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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Bills Medicare through one group practice

  1. The Board OF Trustees OF The University OF IllinoisChicago, IL

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

Jonah D. Fleisher among 2,062 obstetrics & gynecology physician records in Illinois

Jonah D. Fleisher, MD is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 57% of them.

  • NPI issued2009 · 57% of these records are older, 41% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2009 · median 2006 among the 1,168 with a school on file
  • Record last updated2022 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

700 obstetrics & gynecology physician records list a practice address in Chicago

They are 700 of the 63,379 NPPES records with a practice address in Chicago, and 2,062 obstetrics & gynecology physician records in Illinois.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Eric Brown, M.D.Chicago, IL 606121356303663
  2. Allison Cowett, M.D.Chicago, IL 606121639282668
  3. Sadia Haider, MDChicago, IL 606121033163522
  4. Kimberly Jezek-TischChicago, IL 606121720090269
  5. Robin Jones, M.D.Chicago, IL 606121942262258
  6. Martha KaempfeChicago, IL 606121821000142
  7. Andrea KempChicago, IL 606121932112927
  8. Edward Linn, M.D.Chicago, IL 606121730178765

Common questions

What is Jonah D. Fleisher, MD's NPI number?

Jonah D. Fleisher, MD's National Provider Identifier (NPI) is 1063648632, issued on Jun 9, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Jonah D. Fleisher, MD located?

The NPPES record lists a practice address at 1801 W Taylor St, M/C 650, Chicago, IL, 60612. Phone: (312) 413-7500. Providers update this record themselves, so call before visiting.

How can I verify Jonah D. Fleisher, MD's license?

NPPES lists Illinois license number 036.143320, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.