GlassScriptPhysician profile
Donald B Knapp
NPI 1184614109
$268.67
in general payments reported to CMS, 2019-2025
3 companies · none reported in 2025
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $22.77 · 2020: $107 · 2021: $139.
Who reported paying
General payments only, as reported to CMS. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Alcon Vision LLC | $138.96 | 2021 | |
| Coopervision INC. | $106.94 | 2020 | |
| Biotissue Holdings INC. | $22.77 | 2019 |
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Donald Knapp 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.
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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.