Physician profile

Samuel Castillo

Gastroenterology (Internal Medicine) · Chicago, IL

NPI 1467503672

$4,446.92

in general payments reported to CMS, 2019-2025

20 companies · $310 in 2025

The $310 reported for 2025 was less than what a typical Gastroenterology (Internal Medicine) provider 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$764.45

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
Salix Pharmaceuticals, A Division of Bausch Health US, LLC $1,836.29 2020-2025 Xifaxan
Janssen Biotech, INC. $508.83 2019-2025 Stelara, Tremfya
Abbvie INC. $404.63 2019-2022
Celgene Corporation $302.59 2021-2023 Zeposia
Merck Sharp & Dohme LLC $268.31 2019-2022
Gilead Sciences, INC. $267.07 2020-2025
Braintree Laboratories, INC. $130.67 2019-2022
Pfizer INC. $125.50 2022-2023
Madrigal Pharmaceuticals $118.31 2024-2025 Rezdiffra, Resmetirom
Takeda Pharmaceuticals U.S.A., INC. $111.43 2019-2021
Alfasigma USA, INC. $83.71 2020-2022
Boston Scientific Corporation $69.96 2024-2025 Exalt Model D, Captivator II
Ironwood Pharmaceuticals, INC $52.75 2019-2020
Ardelyx, INC. $41.78 2022-2023 Ibsrela
Intercept Pharmaceuticals, INC. $33.58 2021-2022
Show all 20 companies
CompanyGeneral paymentsYearsTop products
Shionogi INC $28.07 2019
Redhill Biopharma INC. $26.96 2021
Nestle Healthcare Nutrition INC. $14.51 2023
Lucid Diagnostics INC. $13.05 2023
Romark Laboratories, Lc $8.92 2019

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.

If you want to bring it up

Most clinicians are glad to talk about this. A respectful way in:

These are normal questions. A good clinician will welcome them.

Share this page

Payment summary

Samuel Castillo

$4,446.92

in general payments reported 2019-2025

Years
2019-2025
Top company
Salix Pharmaceuticals, A Division of Bausch Health US, LLC
Context
The $310 reported for 2025 was less than what a typical Gastroenterology (Internal Medicine) provider received nationally (typical 2025 total: $636).

https://glasscript.com/doctor/247467/samuel-castillo

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

Keep an eye on this page

Get an email when the next June refresh changes this page. No account needed.

Watch this doctor

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.