NPPES file of Aug 9, 2026

Brett Michael Mahon, M.D.

Anatomic Pathology & Clinical Pathology Physician · Chicago, IL

Brett Michael Mahon, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Chicago, Illinois, and NPI 1023274271, issued on Aug 6, 2008. Check the license (Illinois 036.120861, 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
1023274271
Name
Brett Michael Mahon
Credential
M.D.
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
036.120861 IL
Self-reported in NPPES; status is on the state search
Practice location
1750 W Harrison St, Chicago, IL 60612
Phone
(312) 942-5260
Enumerated
Aug 6, 2008
Record last updated
Jan 18, 2011 (not updated in 15 years: call before relying on the address or phone)
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 1750 W Harrison St

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

  1. Mohamed Rafat Akkad Wattar, MDAnatomic Pathology & Clinical Pathology Physician1033850920
  2. Tamara AmponsahEmergency Medicine Physician1821871682
  3. Maria Charina Benavidez, MDSurgery Physician1528645843
  4. Dawn Bradly, MDAnatomic Pathology & Clinical Pathology Physician1578729240
  5. Courtney Camp, RNC, MSN, APNCritical Care Neonatal Nurse Practitioner1790015576
  6. Talib Chaudhry, MDSurgery Physician1093342446

Verify Brett Michael Mahon 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 036.120861
    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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Industry payments in 2024: $600.00

1 payment: consulting fee; the largest payer was Abbvie Inc. The 2,607 providers of this specialty with any payment received $3,565.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Brett Mahon$600.00
  2. Specialty average$3,565.00

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Brett Michael Mahon among 789 anatomic pathology & clinical pathology physician records in Illinois

Brett Michael Mahon, M.D. is one of 789 anatomic pathology & clinical pathology physician records with a practice address in Illinois. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 49% of them.

  • NPI issued2008 · 49% of these records are older, 42% newer
  • In a Medicare fileYes · 55% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • Record last updated2011 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in Illinois

There are 789 anatomic pathology & clinical pathology physician records in Illinois.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Frederick Behm, MDChicago, IL 606121457354656
  2. Thomas Betlej, MDChicago, IL 606121962486480
  3. Pincas Bitterman, MDChicago, IL 606121306821905
  4. John Coon, MDChicago, IL 606121922083237
  5. Robert Decresce, MDChicago, IL 606121114902814
  6. Paolo Gattuso, MDChicago, IL 606121245215854
  7. Shriram Jakate, MDChicago, IL 606121811972086
  8. Jerome Loew, MDChicago, IL 606121366427536

Common questions

What is Brett Michael Mahon, M.D.'s NPI number?

Brett Michael Mahon, M.D.'s National Provider Identifier (NPI) is 1023274271, issued on Aug 6, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Brett Michael Mahon, M.D. located?

The NPPES record lists a practice address at 1750 W Harrison St, Chicago, IL, 60612. Phone: (312) 942-5260. Providers update this record themselves, so call before visiting.

How can I verify Brett Michael Mahon, M.D.'s license?

NPPES lists Illinois license number 036.120861, 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.