Christopher Spencer, MD
Radiation Oncology · Rolla, MONPI 1568775567
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $67,490 of the $70,496 with a category attached, or 95.7%. Blue Earth Diagnostics accounts for 97.2% of it on its own, with 39 other manufacturers making up the rest. Reporting peaked in 2023 at $37,439 and has fallen 98.6% since, to $535 in 2025. 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 122 payments — averaging $577.83 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Blue Earth Diagnostics$69K
- Novartis$249
- Johnson & Johnson$228
- Daiichi Sankyo Inc.$123
- AstraZeneca$101
- Jazz Pharmaceuticals Inc.$81
- plus $1K from 34 others
What the payments were for
- Consulting fees$67,49096%
- Travel & lodging$8431%
- Food & beverage$2,1623%
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 |
|---|---|---|
| Blue Earth Diagnostics | 16 | $68,524 |
| Novartis | 15 | $249 |
| Johnson & Johnson | 10 | $228 |
| Daiichi Sankyo Inc. | 6 | $123 |
| AstraZeneca | 6 | $101 |
| Jazz Pharmaceuticals Inc. | 3 | $81 |
| Eisai Inc. | 4 | $80 |
| E.r. Squibb & Sons, L.L.C. | 5 | $77 |
| Merck | 4 | $75 |
| Sanofi | 4 | $72 |
| Exelixis Inc. | 3 | $61 |
| Bayer | 3 | $55 |
| Mirati Therapeutics, Inc. | 3 | $51 |
| Incyte Corporation | 3 | $50 |
| Regeneron Healthcare Solutions, Inc. | 2 | $49 |
| Genentech USA, Inc. | 2 | $43 |
| Stemline Therapeutics Inc. | 2 | $40 |
| Tempus AI, Inc | 2 | $40 |
| EMD Serono, Inc. | 2 | $37 |
| Tesaro, Inc. | 2 | $37 |
| Dendreon Pharmaceuticals LLC | 2 | $37 |
| Amgen | 2 | $35 |
| Servier Pharmaceuticals LLC | 2 | $31 |
| Pfizer | 2 | $30 |
| Caris MPI, Inc. | 1 | $28 |
| Pharmacyclics LLC, An Abbvie Company | 1 | $27 |
| Clovis Oncology, Inc. | 2 | $26 |
| Pharmacosmos Therapeutics Inc. | 1 | $21 |
| Rigel Pharmaceuticals, Inc. | 1 | $19 |
| ADC Therapeutics America, Inc. | 1 | $18 |
| Genmab U.S., Inc. | 1 | $18 |
| Gilead | 1 | $17 |
| Myovant Sciences Inc. | 1 | $17 |
| Taiho Oncology, Inc. | 1 | $16 |
| Bristol Myers Squibb | 1 | $15 |
| Tersera Therapeutics LLC | 1 | $14 |
| Coherus Oncology, Inc. | 1 | $13 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $13 |
| Sobi, Inc | 1 | $13 |
| AbbVie | 1 | $12 |
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.
- Axumin$68,511
How this compares
$70,496 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 |
|---|---|---|
| Oxycodone Hcl | 53 | $2,169 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 13 | $686 |
| Pregabalin | 16 | $108 |
| Tramadol Hcl | 12 | $69 |
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 15 | $32 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Rolla
- Clifford RobinsonSaint Louis$817K
- Carlos PerezSpringfield$103K
- Pamela SamsonSaint Louis$95K
- Jeffrey BradleySaint Louis$75K
- Matthew SprakerSaint Louis$61K
- Lauren HenkeSaint Louis$45K
- Jeff MichalskiSaint Louis$44K
- Gregory BiedermannColumbia$41K
- Sunpreet RakhraKansas City$19K
- Stephanie PerkinsSaint Louis$16K
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.