NPPES file of Aug 9, 2026

Jason Zimmermann, M.D.

Surgery Physician · Oak Lawn, IL

Jason Zimmermann, M.D. is a surgery physician with a practice address in Oak Lawn, Illinois, and NPI 1083001077, issued on Apr 17, 2015. Check the license (Illinois 036.147577, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083001077
Name
Jason Zimmermann
Credential
M.D.
Primary taxonomy
Surgery Physician 208600000X
License number
036.147577 IL
Self-reported in NPPES; status is on the state search
Practice location
4400 W 95TH St Ste 413, Oak Lawn, IL 60453
Phone
(708) 499-0034
Enumerated
Apr 17, 2015
Record last updated
May 12, 2022
Medicare enrollment
Enrolled (PECOS I20210607002926); accepts Medicare assignment
Medical or professional school
Rush Medical College Of Rush University, 2015
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 4400 W 95TH St Ste 413

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

  1. Paul Balash, M.D.Surgery Physician1073741625
  2. Ameer Gomberawalla, M.D.Surgery Physician1659671675
  3. Mallory KosowPhysician Assistant1548930431

Verify Jason Zimmermann 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 036.147577
    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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53% more Medicare Part D claims than the average surgery physician in 2024

225 Medicare Part D claims for 85 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 55 claims were for opioids.

  1. Jason Zimmermann225
  2. Specialty average147

Most prescribed

  1. Metronidazole31 claims
  2. Sulfamethoxazole-Trimethoprim31 claims
  3. Metoclopramide Hcl28 claims
  4. Tramadol Hcl28 claims
  5. Hydrocodone-Acetaminophen25 claims
  6. Gavilyte-G15 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.

Industry payments in 2024: $93.49

4 payments; by number, the most common kind was food and beverage; the largest payer was W. L. Gore & Associates, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jason Zimmermann$93.49
  2. Specialty average$3,513.80

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. Advocate Health And Hospitals CorporationOak Lawn, IL

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

Jason Zimmermann among 1,520 surgery physician records in Illinois

Jason Zimmermann, M.D. is one of 1,520 surgery physician records with a practice address in Illinois. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 61% of them.

  • NPI issued2015 · 61% of these records are older, 37% newer
  • In a Medicare fileYes · 66% of these records are
  • In the CMS Doctors and Clinicians fileYes · 43% of these records are
  • Graduated2015 · median 2004 among the 650 with a school on file
  • Record last updated2022 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in Illinois

There are 1,520 surgery physician records in Illinois.

The 8 surgery physician records with the nearest ZIP codes

  1. Paul Balash, M.D.Oak Lawn, IL 604531073741625
  2. Bryce Bardezbanian, MDOak Lawn, IL 604531245496694
  3. Joseph Brosnan, MDOak Lawn, IL 604531497816300
  4. James Doherty, M.D.Oak Lawn, IL 604531366589194
  5. Ameer Gomberawalla, M.D.Oak Lawn, IL 604531659671675
  6. William Hopkins, MDOak Lawn, IL 604531316036114
  7. Gerald Klompien, MDOak Lawn, IL 604531326109232
  8. Barbara Krueger, MDOak Lawn, IL 604531376640367

Common questions

What is Jason Zimmermann, M.D.'s NPI number?

Jason Zimmermann, M.D.'s National Provider Identifier (NPI) is 1083001077, issued on Apr 17, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Jason Zimmermann, M.D. located?

The NPPES record lists a practice address at 4400 W 95TH St Ste 413, Oak Lawn, IL, 60453. Phone: (708) 499-0034. Providers update this record themselves, so call before visiting.

How can I verify Jason Zimmermann, M.D.'s license?

NPPES lists Illinois license number 036.147577, 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.

How much does Jason Zimmermann, M.D. prescribe under Medicare Part D?

In 2024, Jason Zimmermann, M.D. had 225 Medicare Part D claims for 85 beneficiaries; the average among surgery physician prescribers was 147. 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.