Leonid Shunyakov, MD
Medical Oncology · Bolivar, MONPI 1396709895
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $1,532,035 of the $2,086,590 with a category attached, or 73.4%. It is spread thinly across 60 manufacturers, the largest accounting for just 17.2%. Among medical 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 2,651 payments — averaging $787.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- E.r. Squibb & Sons, L.L.C.$360K
- AstraZeneca$250K
- Johnson & Johnson$209K
- AbbVie$119K
- Seagen Inc.$118K
- Daiichi Sankyo Inc.$107K
- plus $923K from 54 others
Across 317 payments — averaging $2308.47 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.
- Beigene, Ltd.$175K
- Merck$175K
- Takeda Pharmaceuticals U.S.A., Inc.$84K
- Incyte Corporation$74K
- Jazz Pharmaceuticals Inc.$43K
- Bristol Myers Squibb$43K
- plus $138K from 7 others
What the payments were for
- Consulting fees$330,85916%
- Speaking & faculty fees$1,532,03573%
- Travel & lodging$166,3708%
- Food & beverage$54,9143%
- Education$2,4120%
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.
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
$2,086,590 in reported general payments places this provider in the 95th percentile of 144 medical 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 |
|---|---|---|
| RevlimidLenalidomide | 150 | $2,352,954 |
| PomalystPomalidomide | 42 | $909,649 |
| IbrancePalbociclib | 52 | $796,775 |
| VerzenioAbemaciclib | 49 | $786,405 |
| TruqapCapivasertib | 24 | $467,128 |
| CalquenceAcalabrutinib Maleate | 33 | $443,020 |
| AyvakitAvapritinib | 11 | $423,904 |
| PemazyrePemigatinib | 22 | $398,605 |
| LenvimaLenvatinib Mesylate | 17 | $393,142 |
| CabometyxCabozantinib S-Malate | 13 | $333,118 |
| VenclextaVenetoclax | 32 | $319,127 |
| Lenalidomide | 22 | $294,174 |
| LynparzaOlaparib | 18 | $261,419 |
| BrukinsaZanubrutinib | 32 | $248,699 |
| ImbruvicaIbrutinib | 15 | $242,520 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Bristol Myers SquibbRevlimid | $25,767 | $2,352,954150 claims |
| AstraZenecaTruqap, Calquence, Lynparza, Breztri Aerosphere, Symbicort | $249,648 | $1,182,558100 claims |
| PfizerIbrance, Eliquis | $23,228 | $945,637308 claims |
| E.r. Squibb & Sons, L.L.C.Pomalyst | $359,740 | $909,64942 claims |
| Lilly USA, LLCVerzenio, Olanzapine | $9,914 | $797,029223 claims |
| Incyte CorporationPemazyre | $4,596 | $398,60522 claims |
| Eisai Inc.Lenvima | $7,112 | $393,14217 claims |
| Exelixis Inc.Cabometyx | $42,929 | $333,11813 claims |
| AbbVieVenclexta | $118,813 | $319,12732 claims |
| Beigene USA, Inc.Brukinsa | $51,321 | $248,69932 claims |
| Pharmacyclics LLC, An Abbvie CompanyImbruvica | $10,799 | $242,52015 claims |
| MerckKeytruda | $28,378 | $146,44213 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 95th percentile of 144 medical oncology providers in Missouri.
Other medical oncology in Bolivar
- Timothy PluardKansas City$664K
- Brad KahlSaint Louis$336K
- Michael NaughtonCape Girardeau$249K
- Russell PachynskiSaint Louis$226K
- Mark SchroederSaint Louis$198K
- George AnsstasSaint Louis$189K
- Ravi VijSaint Louis$153K
- Douglas AdkinsSaint Louis$141K
- Milan ChhedaSaint Louis$105K
- Maurice WillisSaint Louis$101K
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.