Physician profile
Mark E Chittum
NPI 1518942572
$4,066.54
in general payments reported to CMS, 2019-2025
7 companies · none reported in 2025
Payments by year
General and research payments by program year, as reported to CMS.
General payments by year: 2019: $3,553 · 2020: $185 · 2021: $328.
Who reported paying
General payments only, as reported to CMS. Research payments are listed separately below. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| F. Hoffmann-La Roche Ag | $3,048.08 | 2019-2020 | |
| US Retina LLC | $908.67 | 2019-2021 | |
| Regeneron Healthcare Solutions, INC. | $34.77 | 2019 | |
| Allergan, INC. | $26.02 | 2019-2020 | |
| Genentech USA, INC. | $20.21 | 2019 | |
| Genentech, INC. | $16.95 | 2019 | |
| Eyepoint US, INC. | $11.84 | 2020 |
Research and ownership
$1,768.17 in research payments reported 2019-2025. Research payments are often institution-directed and tied to clinical trials: they are reported under a clinician's name but frequently go to a hospital or research organization, and usually reflect participation in medical research.
$11,125.07 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:
- "I saw Mark Chittum 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.