David Diamond, MD
Radiation Oncology · Winter Park, FLNPI 1528069671
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (46.2%), royalties or licence payments and travel and lodging — rather than concentrated in one kind of arrangement. 19 manufacturers reported payments, led by Bayer at 54.5% of the total. Reporting peaked in 2019 at $18,878 and has fallen 57.7% since, to $7,981 in 2025. Among radiation oncology clinicians in FL with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 64 payments — averaging $679.89 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Bayer$24K
- Medtronic$19K
- Novartis$216
- Boston Scientific$146
- AstraZeneca$138
- Novocure Inc.$114
- plus $460 from 13 others
What the payments were for
- Royalty or licence$18,74543%
- Speaking & faculty fees$20,09946%
- Travel & lodging$2,9337%
- Food & beverage$1,7364%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Bayer | 25 | $23,694 |
| Medtronic | 1 | $18,745 |
| Novartis | 7 | $216 |
| Boston Scientific | 3 | $146 |
| AstraZeneca | 6 | $138 |
| Novocure Inc. | 1 | $114 |
| Myriad Genetic Laboratories, Inc. | 4 | $96 |
| Daiichi Sankyo Inc. | 3 | $67 |
| Teleflex LLC | 2 | $57 |
| Smith+Nephew | 2 | $48 |
| Blue Earth Diagnostics | 2 | $37 |
| Bioprotect Medical, Inc. | 1 | $30 |
| MIM Software Inc. | 1 | $22 |
| Dendreon Pharmaceuticals LLC | 1 | $21 |
| GSK | 1 | $21 |
| Cardinal Health 414 LLC | 1 | $21 |
| Regeneron Healthcare Solutions, Inc. | 1 | $19 |
| Kerecis Limited | 1 | $15 |
| Elekta, Inc. | 1 | $6 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- Xofigo$23,421
- VenaSeal$18,745
- GENERAL - THERAPIES$115
- Optune$114
How this compares
$43,513 in reported general payments places this provider in the 95th percentile of 465 radiation oncology providers in Florida.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Tamsulosin Hcl | 48 | $514 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Winter Park
- Evan ThomasWinter Park$209K
- Robert SollaccioWinter Park$13K
- Shravan KandulaOrlando$444K
- Martin KeischMiami Shores$319K
- Marcio FagundesMiami$274K
- Rupesh KotechaMiami$208K
- John SylvesterLakewood Ranch$205K
- Ravi ShridharOrlando$192K
- Alan BrownFort Myers$165K
- Akash NandaOrlando$165K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.