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Dr. Aaron Brenner

Gastroenterology (Gastroenterology Physician)

At a glance

Years since graduation
6
In the NPI registry since
2020

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2020Medical school: University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
  • 2020Registered with an NPI (national billing number; not a license date)

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Gastroenterology Physician primary
    KY license 58259
  • Student in an Organized Health Care Education/Training Program

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Gastroenterology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Payments from drug and device companies

In 2025, 1 companies reported 1 payments worth $23.56 in total to this clinician.

By company
Pfizer Inc.$23.56
By type
Food and Beverage$23.56

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Kentucky →

Other Gastroenterology clinicians in Lexington

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 1, 2026), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1780211268. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.