Pamela Samson, MD
Radiation Oncology · Saint Louis, MONPI 1215223003
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (34.2%), speaking fees and travel and lodging — rather than concentrated in one kind of arrangement. 9 manufacturers reported payments, led by Siemens Medical Solutions USA, Inc. at 54.6% of the total. 2025 is the largest year on record at $30,178, more than ten times the $734 reported in 2019. Among radiation oncology clinicians in MO 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 138 payments — averaging $691.02 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Siemens Medical Solutions USA, Inc.$52K
- AstraZeneca$38K
- Medtronic$4K
- Varian Medical Systems, Inc.$467
- Astrazeneca UK Limited$292
- Novocure Inc.$149
- plus $326 from 3 others
Across 12 payments — averaging $54,758 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.
- Siemens Medical Solutions USA, Inc.$657K
What the payments were for
- Consulting fees$32,58934%
- Speaking & faculty fees$30,28032%
- Travel & lodging$27,76029%
- Food & beverage$4,6645%
- Education$680%
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. | 83 | $52,034 |
| AstraZeneca | 22 | $38,343 |
| Medtronic | 24 | $3,749 |
| Varian Medical Systems, Inc. | 1 | $467 |
| Astrazeneca UK Limited | 4 | $292 |
| Novocure Inc. | 1 | $149 |
| Boston Scientific | 1 | $142 |
| Biosense Webster, Inc. | 1 | $117 |
| Empnia, Inc. | 1 | $67 |
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.
- Varian Ethos Treatment Planning$27,709
- IMFINZI$15,106
- Halcyon$9,154
- Varian Treatment$3,680
- Clinac iX$1,858
- Other$467
- Arctic Front$332
- Edge$176
- Oncology$149
- ARIA Radiation Therapy Management Software$120
- Carto Smarttouch$117
- Carto 3 System$117
How this compares
$95,361 in reported general payments places this provider in the 95th percentile of 123 radiation oncology providers in Missouri.
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 |
|---|---|---|
| Pentoxifylline | 15 | $421 |
| Dexamethasone | 13 | $203 |
| Pantoprazole Sodium | 14 | $19 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Saint Louis
- Clifford RobinsonSaint Louis$817K
- Jeffrey BradleySaint Louis$75K
- Matthew SprakerSaint Louis$61K
- Lauren HenkeSaint Louis$45K
- Jeff MichalskiSaint Louis$44K
- Stephanie PerkinsSaint Louis$16K
- Hiram GaySaint Louis$12K
- Shahed BadiyanSaint Louis$6K
- Robert FrazierSaint Louis$6K
- Christopher AbrahamSaint Louis$5K
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.