GlassScriptPhysician profile
Marshall J Barker
NPI 1083655005
$702.09
in general payments reported to CMS, 2019-2025
18 companies · none reported in 2025
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $28.14 · 2020: $84.74 · 2021: $183 · 2022: $110 · 2023: $203 · 2024: $93.14.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $296.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $296.18 |
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.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Merck Sharp & Dohme LLC | $93.27 | 2020-2024 | Vaxneuvance, Gardasil 9, Rotateq |
| Redhill Biopharma INC. | $70.55 | 2020-2021 | |
| Pfizer INC. | $63.64 | 2019-2023 | |
| Abbvie INC. | $57.51 | 2021-2022 | |
| Astellas Pharma US INC | $57.13 | 2023-2024 | Veozah |
| Vanda Pharmaceuticals INC. | $51.44 | 2020-2024 | Hetlioz, Fanapt |
| Dexcom, INC. | $48.38 | 2021-2023 | Dexcom G6 Transmitter |
| Insulet Corporation | $41.17 | 2021-2023 | Omnipod |
| Takeda Pharmaceuticals U.S.A., INC. | $40.23 | 2021-2022 | |
| Boston Scientific Corporation | $34.20 | 2023 | |
| Corcept Therapeutics | $26.15 | 2023 | Korlym |
| Abbott Laboratories | $23.65 | 2023 | Freestyle Libre 2 |
| Vbi Vaccine (Delaware) INC. | $23.09 | 2023 | Prehevbrio |
| Grifols USA, LLC | $17.08 | 2019 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | $15.86 | 2022 |
Show all 18 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Amgen INC. | $15.10 | 2021 | |
| Lilly USA, LLC | $12.07 | 2021 | |
| Teva Pharmaceuticals USA, INC. | $11.57 | 2021 |
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:
- "I saw Marshall Barker listed in the CMS Open Payments database. Can you tell me about your work with those companies?"
- "Is there a generic or alternative to this medication, and would it work as well for me?"
- "What made you choose this particular treatment for my situation?"
These are normal questions. A good clinician will welcome them.
Share this page
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.