Physician profile

Gary L Gerstner

Gastroenterology (Internal Medicine) · Waukesha, WI

NPI 1255392056

$1,042.17

in general payments reported to CMS, 2019-2025

6 companies · none reported in 2025

Payments by year

General payments by program year, as reported to CMS.

Who reported paying

General payments only, as reported to CMS. Product names cover 2023-2025.

CompanyGeneral paymentsYearsTop products
Abbvie INC. $422.61 2019-2022
Pfizer INC. $247.00 2019
Allergan, INC. $153.97 2019
E.R. Squibb & Sons, L.L.C. $124.88 2021
Janssen Biotech, INC. $81.60 2019
Braintree Laboratories, INC. $12.11 2020

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Payment summary

Gary L Gerstner

$1,042.17

in general payments reported 2019-2025

Years
2019-2022
Top company
Abbvie INC.

https://glasscript.com/doctor/484516/gary-l-gerstner

Source: CMS Open Payments, program years 2019-2025. Payments are legal and often routine.

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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.