Physician profile

Brian J Blumenstein

Gastroenterology (Internal Medicine) · Oak Lawn, IL

NPI 1194784645

$2,228.34

in general payments reported to CMS, 2019-2025

23 companies · $247 in 2025

The $247 reported for 2025 was less than what a typical Gastroenterology (Internal Medicine) provider received nationally (typical 2025 total: $636).

See the full distribution for Gastroenterology (Internal Medicine)

Payments by year

General payments by program year, as reported to CMS.

What the payments were for

Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.

View as a table
Payment typeAmount (2023-2025)
Food and Beverage$1,270.33

Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.

Who reported paying

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

CompanyGeneral paymentsYearsTop products
Abbvie INC. $1,073.53 2019-2025 Skyrizi, Rinvoq, Viberzi
Salix Pharmaceuticals, A Division of Bausch Health US, LLC $220.41 2019-2024 Xifaxan, Plenvu
Janssen Scientific Affairs, LLC $194.16 2023 Stelara
Takeda Pharmaceuticals U.S.A., INC. $127.32 2019-2023 Entyvio, Gattex
Endogastric Solutions, INC $107.84 2021
Janssen Biotech, INC. $93.41 2019-2023 Stelara
Pfizer INC. $89.04 2023
Celgene Corporation $53.40 2023-2024 Zeposia
Mauna Kea Technologies, INC. $28.58 2022
Madrigal Pharmaceuticals $27.07 2024 Resmetirom
Organon LLC $25.53 2023 Hadlima, Renflexis
Boehringer Ingelheim Pharmaceuticals, INC. $23.54 2023 Cyltezo
Ardelyx, INC. $23.25 2023 Ibsrela
Shionogi INC $19.87 2019
Merck Sharp & Dohme LLC $18.44 2019
Show all 22 companies
CompanyGeneral paymentsYearsTop products
Vivus LLC $17.68 2023 Pancreaze
Braintree Laboratories, INC. $17.21 2023 Suflave
Aimmune Therapeutics, INC. $15.48 2025 Zenpep
Amgen INC. $14.94 2023 Amjevita
Shire North American Group INC $13.44 2019
Medtronic, INC. $12.37 2021
Allergan, INC. $11.83 2019

1 company reported research payments only; those appear in the research section below.

Drugs and devices associated with these payments

CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.

Research and ownership

$50,636.60 in ownership or investment interests, as reported to CMS. These are holdings a clinician or an immediate family member has in a company, not payments received.

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Payment summary

Brian J Blumenstein

$2,228.34

in general payments reported 2019-2025

Years
2019-2025
Top company
Abbvie INC.
Context
The $247 reported for 2025 was less than what a typical Gastroenterology (Internal Medicine) provider received nationally (typical 2025 total: $636).

https://glasscript.com/doctor/326078/brian-j-blumenstein

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.