Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Covered recipient · General Payments record

LEONID SHUNYAKOV

Allopathic & Osteopathic Physicians Internal Medicine Medical Oncology

NPI
1396709895
CMS profile
335741
Location
BOLIVAR, MO

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2022 · Entire year

$334,003.60

455 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2022 · entire year · sorted by reported total

By paying entity

PY2022 · entire year · sorted by reported total

Paying entityAmountRecords
E.R. Squibb & Sons, L.L.C. $44,772.25 44
AstraZeneca Pharmaceuticals LP $32,593.54 29
Seagen Inc. $31,001.83 34
Janssen Biotech, Inc. $29,957.21 25
GlaxoSmithKline, LLC. $29,108.80 20
JAZZ PHARMACEUTICALS INC. $25,013.52 22
Daiichi Sankyo Inc. $24,743.50 23
BeiGene USA, Inc. $23,858.35 23
GENZYME CORPORATION $20,670.85 18
Regeneron Healthcare Solutions, Inc. $15,071.11 13
Karyopharm Therapeutics Inc. $12,554.75 12
Genentech USA, Inc. $8,991.99 24
ABBVIE INC. $6,027.50 14
Roche Diagnostics Corporation $4,919.61 10
Genentech, Inc. $4,366.43 5
Celgene Corporation $4,279.42 28
Merck Sharp & Dohme LLC $3,862.98 10
Pharmacyclics LLC, an AbbVie Company $3,354.97 9
Lilly USA, LLC $2,921.99 2
Janssen Scientific Affairs, LLC $1,887.75 2
Exelixis Inc. $1,721.79 5
Epizyme, Inc., $487.16 3
Novartis Pharmaceuticals Corporation $255.74 15
PFIZER INC. $206.67 15
SANOFI-AVENTIS U.S. LLC $181.98 2
Gilead Sciences, Inc. $151.10 5
CTI BioPharma Corp. $117.42 1
Incyte Corporation $115.98 2
Amgen Inc. $98.19 1
Progenics Pharmaceuticals, Inc. $84.68 1
Rigel Pharmaceuticals, Inc. $61.24 4
Sun Pharmaceutical Industries Inc. $54.64 3
SERVIER PHARMACEUTICALS LLC $51.50 3
Foundation Medicine, Inc. $51.21 2
ARRAY BIOPHARMA INC $50.25 5
EISAI INC. $48.88 3
Kyowa Kirin, Inc. $41.87 2
Kite Pharma, Inc. $41.59 2
Verity Pharmaceuticals Inc. $29.16 2
Takeda Pharmaceuticals U.S.A., Inc. $27.78 2
Acrotech Biopharma LLC $25.90 2
Pharmacosmos Therapeutics Inc. $22.44 1
Organon LLC $21.15 1
Accord Healthcare, Inc. $20.87 1
PharmaEssentia USA Corporation $17.54 1
Myovant Sciences Inc. $16.16 1
G1 Therapeutics, Inc. $15.86 1
Sobi, Inc $14.23 1
EMD Serono, Inc. $12.27 1

Page 1 of 10; records 1–50 of 455 matching records. This page contains 50 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

LEONID SHUNYAKOV

NPI 1396709895 · CMS profile ID 335741

Allopathic & Osteopathic Physicians / Internal Medicine / Medical Oncology

BOLIVAR, MO

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

General Payments, PY2022; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types

Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00

Page 1 of 10; records 1–50 of 455 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1396709895?year=2022&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c

Cite these filtered records

The citation includes this program year, filters, data edition, and page of results.

Plain
LEONID SHUNYAKOV, NPI 1396709895, CMS profile ID 335741. General Payments, PY2022; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 10; records 1–50 of 455 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1396709895?year=2022&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c.
APA 7
IndustryPayments. (2026). LEONID SHUNYAKOV, NPI 1396709895, CMS profile ID 335741. General Payments, PY2022; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 10; records 1–50 of 455 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1396709895?year=2022&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c.
Bluebook
LEONID SHUNYAKOV, NPI 1396709895, CMS profile ID 335741, IndustryPayments, General Payments, PY2022; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types (Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00). Page 1 of 10; records 1–50 of 455 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c. https://industrypayments.org/provider/npi-1396709895?year=2022&recipient=provider#records-h.

Centers for Medicare & Medicaid Services, Open Payments

Citation formats are provided for reference; check the requirements of your publication.

Payment records · PY2022

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2022 · Physicians and non-physician practitioners · CMS publication 2026-06-30

455 matching records · $334,003.60 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 455 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 455.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
E.R. Squibb & Sons, L.L.C. $1,605.0012/23/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625445 CMS
Karyopharm Therapeutics Inc. $10.3912/23/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 946522243 CMS
Daiichi Sankyo Inc. $1,100.0012/20/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 930873819 CMS
E.R. Squibb & Sons, L.L.C. $12.7512/19/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625473 CMS
E.R. Squibb & Sons, L.L.C. $300.0012/19/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625497 CMS
Gilead Sciences, Inc. $11.8612/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 929571871 CMS
Celgene Corporation $3.9112/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625443 CMS
PFIZER INC. $22.5712/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 949507907 CMS
PFIZER INC. $22.8212/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 949541055 CMS
Seagen Inc. $113.8112/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 904113797 CMS
Seagen Inc. $6,160.0012/14/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 904113803 CMS
Seagen Inc. $338.1312/14/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 904113817 CMS
E.R. Squibb & Sons, L.L.C. $1,738.7512/13/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625433 CMS
GlaxoSmithKline, LLC. $1,600.0012/13/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 944565879 CMS
PharmaEssentia USA Corporation $17.5412/13/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941280897 CMS
Janssen Biotech, Inc. $81.3612/11/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 886073115 CMS
Celgene Corporation $95.8412/10/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625441 CMS
Genentech USA, Inc. $17.8812/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950719159 CMS
Celgene Corporation $13.0612/07/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625469 CMS
Daiichi Sankyo Inc. $555.0012/07/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 930889537 CMS
GlaxoSmithKline, LLC. $472.6612/07/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 944565919 CMS
PFIZER INC. $14.2412/04/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 949502825 CMS
AstraZeneca Pharmaceuticals LP $118.8512/02/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 915799057 CMS
E.R. Squibb & Sons, L.L.C. $1,605.0012/02/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625423 CMS
Kite Pharma, Inc. $18.8912/02/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 920067331 CMS
E.R. Squibb & Sons, L.L.C. $1,475.0012/01/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625425 CMS
JAZZ PHARMACEUTICALS INC. $22.7812/01/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 951368401 CMS
Novartis Pharmaceuticals Corporation $18.5612/01/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 894372239 CMS
Janssen Biotech, Inc. $1,100.0011/30/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 886073241 CMS
Genentech USA, Inc. $18.8511/29/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950723851 CMS
Regeneron Healthcare Solutions, Inc. $19.3711/29/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 927400289 CMS
Celgene Corporation $15.8511/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625467 CMS
Regeneron Healthcare Solutions, Inc. $223.1311/25/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 927400279 CMS
ABBVIE INC. $21.5011/23/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 891598419 CMS
ABBVIE INC. $4,725.0011/23/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 891598421 CMS
Daiichi Sankyo Inc. $262.5011/22/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 930862795 CMS
E.R. Squibb & Sons, L.L.C. $3,665.0011/22/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625451 CMS
Exelixis Inc. $1,650.0011/22/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932471613 CMS
Daiichi Sankyo Inc. $27.5011/21/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 930873045 CMS
E.R. Squibb & Sons, L.L.C. $72.6711/21/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932625421 CMS
Gilead Sciences, Inc. $21.9611/21/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 929571875 CMS
BeiGene USA, Inc. $893.5311/17/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940793021 CMS
BeiGene USA, Inc. $3,900.0011/17/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940793023 CMS
BeiGene USA, Inc. $101.5311/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940793025 CMS
BeiGene USA, Inc. $642.2111/17/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940793027 CMS
BeiGene USA, Inc. $307.9011/17/2022 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940793029 CMS
Seagen Inc. $17.5011/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 904113787 CMS
BeiGene USA, Inc. $1,950.0011/16/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940792997 CMS
BeiGene USA, Inc. $5,200.0011/16/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940793007 CMS
BeiGene USA, Inc. $75.9011/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940793009 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $324,796.96 410
PY2020 $129,096.10 205
PY2021 $233,777.75 277
PY2022 $334,003.60 455
PY2023 $348,699.85 445
PY2024 $327,068.46 442
PY2025 $389,146.89 417

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.