Healthcare provider profile · identity verified

Michael Dathan Chesnut, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · PROSPECT, KY · NPI 1821127333

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Michael Dathan Chesnut, M.D. received $866.20 in general payments during 2025 across 42 reported records.

Phathom Pharmaceuticals, Inc. accounted for 18.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 29 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Mounjaro, Ozempic, Trelegy Ellipta, Trintellix.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 55 claims for Synthroid by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Farxiga by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 47 claims for Trelegy Ellipta by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 34 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Mounjaro by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 34 claims for Trulicity by this doctor in 2024.

Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 39 claims for Ozempic by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 111 claims for Eliquis by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported PAXLOVID as an associated drug or biological on 24465 records involving 15715 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Paxlovid by this doctor in 2024.

Takeda Pharmaceuticals U.S.A., Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRINTELLIX as an associated drug or biological on 37075 records involving 14402 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Trintellix by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$866.20

42 reported records · 18 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $159.4618.4%32025
ABBVIE INC. Unresolved — no canonical attribution shown $137.2715.8%72025
Novo Nordisk Inc Unresolved — no canonical attribution shown $124.4214.4%82025
Amgen Inc. Unresolved — no canonical attribution shown $85.159.8%52025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $41.284.8%22025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $36.984.3%22025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $36.894.3%22025
Eisai Inc. Unresolved — no canonical attribution shown $33.623.9%22025
PFIZER INC. Unresolved — no canonical attribution shown $32.963.8%22025
Ardelyx, Inc. Unresolved — no canonical attribution shown $27.713.2%12025
Bausch Health US, LLC Unresolved — no canonical attribution shown $20.922.4%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $20.882.4%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $20.862.4%12025
Antares Pharma, Inc. Unresolved — no canonical attribution shown $20.502.4%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $19.672.3%12025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $17.112.0%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $16.041.9%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $14.481.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$866.2042

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $159.46 3 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $119.29 5 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $86.07 4 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $73.83 5 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $50.59 3 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $46.02 3 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $45.15 3 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $41.28 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $39.13 2 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $36.98 2 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $36.89 2 2025
Source payment records
Leqembi
Normalized: leqembi
Drug Eisai Inc. $33.62 2 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $32.96 2 2025
Source payment records
COMIRNATY
Normalized: comirnaty
Biological PFIZER INC. $32.96 2 2025
Source payment records
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $32.96 2 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $27.71 1 2025
Source payment records
WELLBUTRIN
Normalized: wellbutrin
Drug Bausch Health US, LLC $20.92 1 2025
Source payment records
CAPVAXIVE
Normalized: capvaxive
Biological Merck Sharp & Dohme LLC $20.88 1 2025
Source payment records
GARDASIL 9
Normalized: gardasil 9
Biological Merck Sharp & Dohme LLC $20.88 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $20.86 1 2025
Source payment records
XYOSTED
Normalized: xyosted
Drug Antares Pharma, Inc. $20.50 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $19.67 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $19.67 1 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $17.98 2 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $17.11 1 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $16.94 1 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $16.04 1 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $15.62 1 2025
Source payment records
TRINTELLIX
Normalized: trintellix
Drug Takeda Pharmaceuticals U.S.A., Inc. $14.48 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
MOUNJARO
mounjaro
2025 Mounjaro 2024 27
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 39
Beneficiary count suppressed
exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 47
Beneficiary count suppressed
exact normalized Medicare Part D
TRINTELLIX
trintellix
2025 Trintellix 2024 19
Beneficiary count suppressed
exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
55 13
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
21 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
47 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
34 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
27 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
34 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
39 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
111 20
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 PAXLOVID
open payments reported associated product
CMS Open Payments — General Payments
24465 supporting records · 15715 recipient NPIs · example record 1228794432
Paxlovid · 2024
Exact normalized brand match · 1 Part D row
17 17
Takeda Pharmaceuticals U.S.A., Inc.
Exact reporting entity; no affiliate inference
2025 TRINTELLIX
open payments reported associated product
CMS Open Payments — General Payments
37075 supporting records · 14402 recipient NPIs · example record 1223616266
Trintellix · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
Atorvastatin CalciumAtorvastatin Calcium25477
Amlodipine BesylateAmlodipine Besylate23663
Levothyroxine SodiumLevothyroxine Sodium18342
Losartan PotassiumLosartan Potassium17352
Rosuvastatin CalciumRosuvastatin Calcium16848
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen15319
Metoprolol SuccinateMetoprolol Succinate14237
GabapentinGabapentin14032
OmeprazoleOmeprazole13339
Tamsulosin HclTamsulosin Hcl13034
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen12723
LisinoprilLisinopril11934
Escitalopram OxalateEscitalopram Oxalate11830
EliquisApixaban11120
Metformin HclMetformin Hcl10027
AlprazolamAlprazolam9921
Zolpidem TartrateZolpidem Tartrate9619
Trazodone HclTrazodone Hcl9023
HydrochlorothiazideHydrochlorothiazide8628
FurosemideFurosemide8324
Pantoprazole SodiumPantoprazole Sodium7623
Memantine HclMemantine Hcl75suppressed
Albuterol Sulfate HfaAlbuterol Sulfate7324
AzithromycinAzithromycin7155
CarvedilolCarvedilol7117
MirtazapineMirtazapine6916
MeloxicamMeloxicam6718
Bupropion XlBupropion Hcl6314
Pravastatin SodiumPravastatin Sodium6015
Sertraline HclSertraline Hcl6014
AllopurinolAllopurinol5915
Cyclobenzaprine HclCyclobenzaprine Hcl5919
Donepezil HclDonepezil Hcl5815
Montelukast SodiumMontelukast Sodium5719
EzetimibeEzetimibe5618
Metoprolol TartrateMetoprolol Tartrate5614
SynthroidLevothyroxine Sodium5513
KetoconazoleKetoconazole5216
SimvastatinSimvastatin5117
DiazepamDiazepam50suppressed
ClopidogrelClopidogrel Bisulfate4913
Tramadol HclTramadol Hcl4916
Trelegy ElliptaFluticasone/Umeclidin/Vilanter47suppressed
IrbesartanIrbesartan4611
Alendronate SodiumAlendronate Sodium45suppressed
Ciprofloxacin HclCiprofloxacin Hcl4422
PrednisonePrednisone4325
CelecoxibCelecoxib4213
Hydralazine HclHydralazine Hcl4211
Potassium ChloridePotassium Chloride4211
OzempicSemaglutide39suppressed
Repatha SureclickEvolocumab38suppressed
Oxycodone HclOxycodone Hcl36suppressed
JardianceEmpagliflozin34suppressed
TrulicityDulaglutide34suppressed
ClonazepamClonazepam33suppressed
LorazepamLorazepam33suppressed
Venlafaxine Hcl ErVenlafaxine Hcl33suppressed
GlipizideGlipizide32suppressed
MethylprednisoloneMethylprednisolone3224
Benazepril HclBenazepril Hcl30suppressed
FinasterideFinasteride30suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3018
Duloxetine HclDuloxetine Hcl29suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide28suppressed
Doxycycline HyclateDoxycycline Hyclate2719
Fluoxetine HclFluoxetine Hcl27suppressed
MounjaroTirzepatide27suppressed
Azelastine HclAzelastine Hcl2616
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2620
Olmesartan MedoxomilOlmesartan Medoxomil25suppressed
FenofibrateFenofibrate24suppressed
Ondansetron OdtOndansetron2414
Ropinirole HclRopinirole Hcl24suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide23suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid23suppressed
BaclofenBaclofen22suppressed
Citalopram HbrCitalopram Hydrobromide22suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl22suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine22suppressed
SpironolactoneSpironolactone22suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2114
Clonidine HclClonidine Hcl21suppressed
FarxigaDapagliflozin Propanediol21suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2117
OlanzapineOlanzapine21suppressed
AcyclovirAcyclovir20suppressed
Amitriptyline HclAmitriptyline Hcl19suppressed
AmoxicillinAmoxicillin1915
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip19suppressed
Nebivolol HclNebivolol Hcl19suppressed
Sumatriptan SuccinateSumatriptan Succinate19suppressed
TrintellixVortioxetine Hydrobromide19suppressed
EstradiolEstradiol18suppressed
GlimepirideGlimepiride18suppressed
Oxybutynin ChlorideOxybutynin Chloride18suppressed
PaxlovidNirmatrelvir/Ritonavir1717
Promethazine HclPromethazine Hcl17suppressed
Testosterone CypionateTestosterone Cypionate17suppressed
EszopicloneEszopiclone16suppressed
Fluticasone PropionateFluticasone Propionate16suppressed
Ipratropium BromideIpratropium Bromide16suppressed
Propranolol Hcl ErPropranolol Hcl16suppressed
ValsartanValsartan16suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril15suppressed
FamotidineFamotidine15suppressed
Ondansetron HclOndansetron Hcl15suppressed
Klor-Con M20Potassium Chloride14suppressed
Tizanidine HclTizanidine Hcl14suppressed
AtenololAtenolol13suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium13suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog13suppressed
MupirocinMupirocin13suppressed
XareltoRivaroxaban13suppressed
Hydroxyzine HclHydroxyzine Hcl12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
NaproxenNaproxen12suppressed
OxycontinOxycodone Hcl12suppressed
Amiodarone HclAmiodarone Hcl11suppressed
PregabalinPregabalin11suppressed
PremarinEstrogens, Conjugated11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $866.20 · 42 records Phathom Pharmaceuticals, Inc. ABRYSVO, AREXVY, Auvelity, BREZTRI, CAPVAXIVE, COMIRNATY, Cologuard Collection Kit, EVENITY, GARDASIL 9, IBSRELA, LEQVIO, Leqembi, MOUNJARO, OTEZLA, Ozempic, PREVNAR 20, QULIPTA, REPATHA, Rybelsus, TRELEGY ELLIPTA, TRINTELLIX, UBRELVY, VOQUEZNA, VRAYLAR, Veozah, WELLBUTRIN, Wegovy, XYOSTED, ZEPBOUND 10
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error