Physician profile

James A Singer

Gastroenterology (Internal Medicine) · Glendale, AZ

NPI 1962478818

$3,015.92

in general payments reported to CMS, 2019-2025

23 companies · none reported in 2025

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$836.71

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
Gilead Sciences, INC. $499.74 2019-2023
Abbvie INC. $498.96 2019-2023 Skyrizi, Rinvoq, Creon
Takeda Pharmaceuticals U.S.A., INC. $430.76 2019-2023 Entyvio
Janssen Biotech, INC. $390.85 2019-2023 Simponi, Simponi Aria, Remicade
Pfizer INC. $164.90 2019-2022
Genzyme Corporation $142.86 2022-2023
Ironwood Pharmaceuticals, INC $112.56 2019-2023 Linzess
Ardelyx, INC. $110.01 2022-2023 Ibsrela
Celgene Corporation $110.01 2022-2023 Zeposia
Salix Pharmaceuticals, A Division of Bausch Health US, LLC $97.49 2019-2022
Ferring Pharmaceuticals INC. $90.52 2022-2023 Cimzia
Regeneron Healthcare Solutions, INC. $66.38 2022
Intercept Pharmaceuticals, INC. $65.17 2019-2023 Ocaliva
Merck Sharp & Dohme LLC $59.80 2019-2022
Shionogi INC $37.33 2019
Show all 22 companies
CompanyGeneral paymentsYearsTop products
Fresenius Kabi USA, LLC $32.87 2023
Amgen INC. $24.58 2022
Allergan, INC. $24.08 2019
Daiichi Sankyo INC. $16.26 2019
Oxford Immunotec USA INC $15.43 2022
Redhill Biopharma INC. $13.03 2022
Shire North American Group INC $12.33 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

$44,503.96 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.

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

James A Singer

$3,015.92

in general payments reported 2019-2025

Years
2019-2024
Top company
Gilead Sciences, INC.

https://glasscript.com/doctor/43225/james-a-singer

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

Download CSV

The CSV has this whole record: totals, yearly figures, every listed company, payment types, and product associations.

Keep an eye on this page

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

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.