Evan Osmundson
Radiation Oncology · Nashville, TNNPI 1225347636
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (47.6%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. 5 manufacturers reported payments, led by Siemens Medical Solutions USA, Inc. at 58.0% of the total. Among radiation oncology clinicians in TN with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 14 payments — averaging $600.46 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Siemens Medical Solutions USA, Inc.$5K
- Varian Medical Systems, Inc.$3K
- Bristol Myers Squibb$170
- Novocure Inc.$24
- Merck$11
Across 50 payments — averaging $14,378 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Merck$435K
- Siemens Medical Solutions USA, Inc.$140K
- EMD Serono, Inc.$74K
- Genentech, Inc.$69K
What the payments were for
- Consulting fees$2,59031%
- Speaking & faculty fees$4,00048%
- Travel & lodging$1,25815%
- Food & beverage$5246%
- Education$350%
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 |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | 9 | $4,872 |
| Varian Medical Systems, Inc. | 2 | $3,330 |
| Bristol Myers Squibb | 1 | $170 |
| Novocure Inc. | 1 | $24 |
| Merck | 1 | $11 |
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.
How this compares
$8,406 in reported general payments places this provider in the 90th percentile of 115 radiation oncology providers in Tennessee.
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 |
|---|---|---|
| Gabapentin | 11 | $106 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Nashville
- Han-Chih ChangNashville$66K
- Karen WinkfieldNashville$53K
- James GrayNashville$46K
- John PhillipsNashville$23K
- Casey LipscombNashville$23K
- Andrew KennedyNashville$18K
- Anthony CmelakNashville$16K
- Joshua MondscheinNashville$6K
- Diandra Ayala-PeacockNashville$4K
- Ryan JonesNashville$3K
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.