Physician profile

Thomas L Oconnor

Gastroenterology (Internal Medicine) · Bourbonnais, IL

NPI 1760470033

$10,971.85

in general payments reported to CMS, 2019-2025

40 companies · $2,126 in 2025

The $2,126 reported for 2025 was more than what 80% of Gastroenterology (Internal Medicine) providers received nationally (typical 2025 total: $636).

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$6,497.71
Education$39.64

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. $3,151.71 2019-2025
Janssen Biotech, INC. $1,671.21 2019-2025 Stelara, Tremfya, Simponi Aria
Takeda Pharmaceuticals U.S.A., INC. $1,041.01 2019-2025 Entyvio, Eohilia, Gattex
Nestle Healthcare Nutrition INC. $651.16 2020-2023
Genzyme Corporation $616.17 2023-2025
Pfizer INC. $548.99 2019-2025
Aimmune Therapeutics, INC. $543.73 2024-2025 Zenpep, Vowst
Salix Pharmaceuticals, A Division of Bausch Health US, LLC $455.24 2019-2023 Xifaxan
Celgene Corporation $421.07 2021-2024 Zeposia
Ardelyx, INC. $203.77 2022-2025 Ibsrela
Gilead Sciences, INC. $198.15 2019-2025
Qol Medical, LLC $147.34 2024-2025 Sucraid, Sucraid
Merck Sharp & Dohme LLC $133.01 2019-2023 Dificid
Lilly USA, LLC $132.42 2024-2025 Omvoh
Ferring Pharmaceuticals INC. $88.41 2019-2021
Show all 40 companies
CompanyGeneral paymentsYearsTop products
Braintree Laboratories, INC. $86.95 2020-2025 Sutab, Suflave
Shionogi INC $82.62 2019-2020
Vivus LLC $76.03 2021-2025 Pancreaze
Capsovision, INC. $62.91 2024 Capsocam Plus
Phathom Pharmaceuticals, INC. $54.20 2024-2025 Voquezna
Redhill Biopharma INC. $50.41 2020-2021
Mirum Pharmaceuticals, INC. $47.10 2025 Livmarli
Celltrion USA INC. $44.50 2025 Vegzelma
Ethicon US, LLC $41.31 2020
Ironwood Pharmaceuticals, INC $39.52 2019-2021
Regeneron Healthcare Solutions, INC. $37.38 2025 Dupixent
Concordia Pharmaceuticals INC. $35.46 2019
Organon LLC $33.20 2022
Boston Scientific Corporation $31.88 2022
Ucb, INC. $28.67 2019
Mauna Kea Technologies, INC. $27.43 2021
Echosens North America, INC. $27.19 2023-2024 Fibroscan
Shire North American Group INC $26.73 2019
Fresenius Kabi USA, LLC $24.11 2023
Allergan, INC. $22.29 2019
Intercept Pharmaceuticals, INC. $22.16 2025
Daiichi Sankyo INC. $19.45 2021
Medtronic, INC. $19.44 2023 Gi Genius
Dova Pharmaceuticals $18.28 2019
Janssen Pharmaceuticals, INC $9.24 2025

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.

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Payment summary

Thomas L Oconnor

$10,971.85

in general payments reported 2019-2025

Years
2019-2025
Top company
Abbvie INC.
Context
The $2,126 reported for 2025 was more than what 80% of Gastroenterology (Internal Medicine) providers received nationally (typical 2025 total: $636).

https://glasscript.com/doctor/983153/thomas-l-oconnor

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.