Leonid Shunyakov, MD
Medical Oncology · Bolivar, MONPI 1396709895
Payments from drug & device makers
Across 2,965 payments — averaging $949.36 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- E.r. Squibb & Sons, L.L.C.$361K
- AstraZeneca$250K
- Johnson & Johnson$209K
- Merck$203K
- Beigene, Ltd.$176K
- Jazz Pharmaceuticals Inc.$120K
- plus $1.5M from 54 others
Across 3 payments — averaging $1170.46 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.
- Eli Lilly$3K
- Takeda Pharmaceuticals U.S.A., Inc.$962
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
$2,814,863 in reported general payments places this provider in the 80th 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 | $68,794 | $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 | $360,525 | $909,64942 claims |
| Lilly USA, LLCVerzenio, Olanzapine | $9,914 | $797,029223 claims |
| Incyte CorporationPemazyre | $78,781 | $398,60522 claims |
| Eisai Inc.Lenvima | $7,112 | $393,14217 claims |
| Exelixis Inc.Cabometyx | $51,679 | $333,11813 claims |
| AbbVieVenclexta | $118,813 | $319,12732 claims |
| Beigene USA, Inc.Brukinsa | $51,321 | $248,69932 claims |
| Pharmacyclics LLC, An Abbvie CompanyImbruvica | $29,025 | $242,52015 claims |
| MerckKeytruda | $202,994 | $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 80th percentile of 144 medical oncology providers in Missouri.
Other medical oncology in Bolivar
- Nina Wagner JohnstonSaint Louis$22M
- Cynthia MaSaint Louis$22M
- Nancy BartlettSaint Louis$19.9M
- Douglas AdkinsSaint Louis$19.2M
- Ramaswamy GovindanSaint Louis$16.4M
- Timothy PluardKansas City$14.7M
- Kelly BoltonSaint Louis$14.5M
- Ravi VijSaint Louis$14.4M
- Daniel MorgenszternSaint Louis$12.8M
- Brad KahlSaint Louis$11.3M
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.