Physician profile
David R Knowles
NPI 1881699908
$7,246.82
in general payments reported to CMS, 2019-2025
42 companies · $970 in 2025
The $970 reported for 2025 was more than what a typical Urology provider received nationally (typical 2025 total: $631).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $1,139 · 2020: $863 · 2021: $1,043 · 2022: $1,182 · 2023: $1,018 · 2024: $1,032 · 2025: $970.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $2,855 · Education: $165.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $2,855.02 |
| Education | $164.99 |
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 |
|---|---|---|---|
| Astellas Pharma US INC | $1,475.16 | 2019-2025 | Xtandi, Myrbetriq |
| Janssen Biotech, INC. | $1,176.49 | 2019-2025 | Erleada, Akeega |
| Endo Pharmaceuticals INC. | $464.90 | 2019-2024 | Edex, Aveed, Xiaflex |
| Abbvie INC. | $452.35 | 2019-2025 | |
| Sumitomo Pharma America, INC. | $422.03 | 2023-2025 | Gemtesa, Orgovyx |
| Pfizer INC. | $409.80 | 2019-2025 | |
| Bayer Healthcare Pharmaceuticals INC. | $349.23 | 2019-2025 | |
| Urovant Sciences INC | $171.38 | 2021-2022 | |
| Acerus Pharmaceuticals Corporation | $158.91 | 2022 | |
| Amgen INC. | $157.82 | 2019-2022 | |
| Tolmar, INC. | $153.53 | 2023-2025 | Jatenzo, Eligard |
| Merck Sharp & Dohme LLC | $143.03 | 2020-2024 | Lynparza |
| Boston Scientific Corporation | $133.13 | 2019-2021 | |
| Novartis Pharmaceuticals Corporation | $132.32 | 2024-2025 | |
| Myriad Genetic Laboratories, INC. | $132.12 | 2022-2025 | Prolaris |
Show all 42 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Travere Therapeutics, INC. | $116.75 | 2019-2021 | |
| Aytu Biopharma, INC. | $101.69 | 2019-2021 | |
| Endo USA, INC. | $98.47 | 2024-2025 | Xiaflex, Edex, Aveed |
| Alnylam Pharmaceuticals INC. | $91.73 | 2021-2023 | Givlaari |
| Urogen Pharma, INC. | $89.53 | 2021-2025 | Jelmyto |
| Rochester Medical Corporation | $88.03 | 2020-2021 | |
| Myovant Sciences INC. | $87.54 | 2021-2022 | |
| Ferring Pharmaceuticals INC. | $85.22 | 2019-2025 | Adstiladrin |
| Allergan, INC. | $78.57 | 2019-2022 | |
| Olympus America INC. | $62.59 | 2025 | Itind System |
| C. R. Bard, INC. & Subsidiaries | $60.48 | 2019-2025 | Bard Urinary Drainage Bag |
| Progenics Pharmaceuticals, INC. | $45.10 | 2022-2024 | |
| Teleflex LLC | $30.16 | 2024-2025 | Barrigel |
| Antares Pharma, INC. | $29.93 | 2019-2024 | Xyosted |
| Genzyme Corporation | $24.82 | 2022 | |
| Clovis Oncology, INC. | $23.78 | 2020 | |
| Coloplast Corp | $20.86 | 2021 | |
| Janssen Pharmaceuticals, INC | $20.14 | 2019 | |
| Calyxo, INC. | $19.67 | 2025 | Cvac Aspiration System |
| Zyla Life Sciences, INC. | $19.40 | 2019 | |
| Photocure INC | $18.92 | 2025 | Cysview |
| Dendreon Pharmaceuticals LLC | $18.52 | 2020 | |
| E.R. Squibb & Sons, L.L.C. | $18.38 | 2022 | |
| Abc Home Medical Supply, INC. | $18.27 | 2022 | |
| Laborie Medical Technologies Corp. | $17.42 | 2025 | Optilume Bph Drug Coated Balloon Catheter |
| Immunitybio, INC. | $15.40 | 2025 | |
| 180 Medical, INC. | $13.25 | 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:
- "I saw David Knowles 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.