Healthcare provider profile · identity verified

Thomas Gregory Chaisson, MD

Allopathic & Osteopathic Physicians|General Practice · THIBODAUX, LA · NPI 1902895279

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 Thomas Gregory Chaisson, MD received $360.88 in general payments during 2025 across 20 reported records.

Novo Nordisk Inc accounted for 17.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 17 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Eliquis, Gemtesa, Jardiance, Ozempic.

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 ARMOUR THYROID as an associated drug or biological on 50 records involving 11 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Armour Thyroid by this doctor in 2024.

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 LUMIGAN as an associated drug or biological on 25016 records involving 7645 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Lumigan by this doctor in 2024.

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 64 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 13 claims for Farxiga by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 67 claims for Jardiance 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 91 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 145 claims for Eliquis by this doctor in 2024.

Sumitomo Pharma America, 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 GEMTESA as an associated drug or biological on 61692 records involving 22152 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Gemtesa by this doctor in 2024.

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

Payment overview · 2025

General Payments

$360.88

20 reported records · 14 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $64.5017.9%42025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $49.1313.6%32025
ABBVIE INC. Unresolved — no canonical attribution shown $45.8212.7%22025
Vanda Pharmaceuticals Inc. Unresolved — no canonical attribution shown $28.337.8%12025
Dexcom, Inc. Unresolved — no canonical attribution shown $24.526.8%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $21.636.0%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $19.605.4%12025
Cranial Technologies, Inc Unresolved — no canonical attribution shown $18.105.0%12025
Amgen Inc. Unresolved — no canonical attribution shown $16.464.6%12025
Abbott Laboratories Unresolved — no canonical attribution shown $16.214.5%12025
PFIZER INC. Unresolved — no canonical attribution shown $15.004.2%12025
SHIELD THERAPEUTICS INC Unresolved — no canonical attribution shown $14.534.0%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $13.543.8%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $13.513.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$360.8820

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
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $49.13 3 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $45.82 2 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $36.05 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $28.45 2 2025
Source payment records
FANAPT
Normalized: fanapt
Drug Vanda Pharmaceuticals Inc. $28.33 1 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $24.52 1 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $21.63 1 2025
Source payment records
Doc Band
Normalized: doc band
Device Cranial Technologies, Inc $18.10 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $17.03 1 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $16.46 1 2025
Source payment records
FREESTYLE LIBRE
Normalized: freestyle libre
Device Abbott Laboratories $16.21 1 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $15.00 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $15.00 1 2025
Source payment records
Saxenda
Normalized: saxenda
Drug Novo Nordisk Inc $14.68 1 2025
Source payment records
ACCRUFER
Normalized: accrufer
Drug SHIELD THERAPEUTICS INC $14.53 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $13.54 1 2025
Source payment records
  • 2025-06-10 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $13.54 · Open Payments source
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $13.51 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
ELIQUIS
eliquis
2025 Eliquis 2024 145 exact normalized Medicare Part D
GEMTESA
gemtesa
2025 Gemtesa 2024 21
Beneficiary count suppressed
exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 67 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 91 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 ARMOUR THYROID
open payments reported associated product
CMS Open Payments — General Payments
50 supporting records · 11 recipient NPIs · example record 1201517088
Armour Thyroid · 2024
Exact normalized brand match · 1 Part D row
27 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LUMIGAN
open payments reported associated product
CMS Open Payments — General Payments
25016 supporting records · 7645 recipient NPIs · example record 1201352548
Lumigan · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
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
64 16
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
13 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
67 12
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
91 16
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
145 16
Sumitomo Pharma America, Inc.
Exact reporting entity; no affiliate inference
2025 GEMTESA
open payments reported associated product
CMS Open Payments — General Payments
61692 supporting records · 22152 recipient NPIs · example record 1176593503
Gemtesa · 2024
Exact normalized brand match · 1 Part D row
21 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
Levothyroxine SodiumLevothyroxine Sodium1040228
AlprazolamAlprazolam44678
Pantoprazole SodiumPantoprazole Sodium42186
Amlodipine BesylateAmlodipine Besylate34968
GabapentinGabapentin34064
Montelukast SodiumMontelukast Sodium27055
Citalopram HbrCitalopram Hydrobromide26862
Atorvastatin CalciumAtorvastatin Calcium26664
Metformin HclMetformin Hcl26670
GlimepirideGlimepiride24453
LisinoprilLisinopril22656
Losartan PotassiumLosartan Potassium22150
Pravastatin SodiumPravastatin Sodium22143
OmeprazoleOmeprazole21046
Paroxetine HclParoxetine Hcl20538
Metoprolol SuccinateMetoprolol Succinate20450
HydrochlorothiazideHydrochlorothiazide20151
Escitalopram OxalateEscitalopram Oxalate19643
Sertraline HclSertraline Hcl18239
ClonazepamClonazepam17027
Memantine HclMemantine Hcl15827
AllopurinolAllopurinol15440
EliquisApixaban14516
SimvastatinSimvastatin14430
Tamsulosin HclTamsulosin Hcl14041
Metoprolol TartrateMetoprolol Tartrate12832
FamotidineFamotidine12730
ClopidogrelClopidogrel Bisulfate12422
MeloxicamMeloxicam12349
AzithromycinAzithromycin122109
Donepezil HclDonepezil Hcl12219
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid11829
CarvedilolCarvedilol11624
Fluoxetine HclFluoxetine Hcl11620
MirtazapineMirtazapine10519
Duloxetine HclDuloxetine Hcl10419
Metformin Hcl ErMetformin Hcl10330
Rosuvastatin CalciumRosuvastatin Calcium10233
Meclizine HclMeclizine Hcl10029
Trazodone HclTrazodone Hcl9523
Doxazosin MesylateDoxazosin Mesylate9417
Potassium ChloridePotassium Chloride9221
OzempicSemaglutide9116
Olmesartan MedoxomilOlmesartan Medoxomil9017
Colestipol HclColestipol Hcl8921
AtenololAtenolol8818
FurosemideFurosemide8821
LorazepamLorazepam8713
Ciprofloxacin HclCiprofloxacin Hcl8674
Zolpidem TartrateZolpidem Tartrate8618
Esomeprazole MagnesiumEsomeprazole Magnesium8415
Venlafaxine Hcl ErVenlafaxine Hcl7515
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide7319
Bupropion XlBupropion Hcl7217
Fluticasone PropionateFluticasone Propionate7223
JardianceEmpagliflozin6712
Oxybutynin Chloride ErOxybutynin Chloride6718
MounjaroTirzepatide6512
SynthroidLevothyroxine Sodium6416
CelecoxibCelecoxib6314
EszopicloneEszopiclone6318
TemazepamTemazepam63suppressed
PrednisonePrednisone6124
Cyclobenzaprine HclCyclobenzaprine Hcl5820
LevofloxacinLevofloxacin5551
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine54suppressed
Warfarin SodiumWarfarin Sodium53suppressed
Albuterol Sulfate HfaAlbuterol Sulfate5228
Amitriptyline HclAmitriptyline Hcl5112
Nebivolol HclNebivolol Hcl5113
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4911
CephalexinCephalexin4834
DiazepamDiazepam4811
Tizanidine HclTizanidine Hcl4728
Divalproex SodiumDivalproex Sodium46suppressed
TorsemideTorsemide46suppressed
AmoxicillinAmoxicillin4543
JanuviaSitagliptin Phosphate45suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl45suppressed
EstradiolEstradiol4313
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide4313
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst4328
IrbesartanIrbesartan4013
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim4021
Doxycycline HyclateDoxycycline Hyclate3927
FluconazoleFluconazole3919
MethylprednisoloneMethylprednisolone3937
SucralfateSucralfate39suppressed
Bisoprolol-HydrochlorothiazideBisoprolol/Hydrochlorothiazide38suppressed
LactuloseLactulose3714
Tramadol HclTramadol Hcl3617
Trelegy ElliptaFluticasone/Umeclidin/Vilanter35suppressed
Testosterone CypionateTestosterone Cypionate34suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril32suppressed
LovastatinLovastatin32suppressed
Memantine Hcl ErMemantine Hcl32suppressed
Pioglitazone HclPioglitazone Hcl32suppressed
Tolterodine Tartrate ErTolterodine Tartrate32suppressed
Clindamycin HclClindamycin Hcl3125
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen3117
Ropinirole HclRopinirole Hcl31suppressed
Clonidine HclClonidine Hcl30suppressed
Megestrol AcetateMegestrol Acetate3013
Buspirone HclBuspirone Hcl28suppressed
Quetiapine FumarateQuetiapine Fumarate28suppressed
Armour ThyroidThyroid,pork27suppressed
TelmisartanTelmisartan27suppressed
Verapamil ErVerapamil Hcl27suppressed
Amiodarone HclAmiodarone Hcl26suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2621
ColchicineColchicine26suppressed
Diclofenac SodiumDiclofenac Sodium26suppressed
Ondansetron HclOndansetron Hcl2619
ValsartanValsartan26suppressed
Dicyclomine HclDicyclomine Hcl2512
IbuprofenIbuprofen25suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended25suppressed
FenofibrateFenofibrate24suppressed
LansoprazoleLansoprazole24suppressed
Raloxifene HclRaloxifene Hcl24suppressed
TrulicityDulaglutide24suppressed
BaclofenBaclofen23suppressed
Breo ElliptaFluticasone/Vilanterol22suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip2219
GemfibrozilGemfibrozil22suppressed
Ventolin HfaAlbuterol Sulfate22suppressed
AcyclovirAcyclovir21suppressed
Azelastine HclAzelastine Hcl21suppressed
Dropsafe Prep PadsAlcohol Antiseptic Pads21suppressed
GemtesaVibegron21suppressed
Chlordiazepoxide-ClidiniumChlordiazepoxide/Clidinium Br20suppressed
EzetimibeEzetimibe20suppressed
FentanylFentanyl20suppressed
Hydroxyzine HclHydroxyzine Hcl20suppressed
FinasterideFinasteride19suppressed
Hydralazine HclHydralazine Hcl19suppressed
Nifedipine ErNifedipine19suppressed
Novolog FlexpenInsulin Aspart19suppressed
Bupropion HclBupropion Hcl18suppressed
FenofibrateFenofibrate Nanocrystallized18suppressed
Hydroxyzine PamoateHydroxyzine Pamoate18suppressed
LatanoprostLatanoprost18suppressed
RamiprilRamipril18suppressed
ConstuloseLactulose17suppressed
LevetiracetamLevetiracetam17suppressed
Np ThyroidThyroid,pork17suppressed
PregabalinPregabalin17suppressed
TradjentaLinagliptin17suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl16suppressed
Ibandronate SodiumIbandronate Sodium16suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride16suppressed
MupirocinMupirocin1615
MyrbetriqMirabegron16suppressed
OlanzapineOlanzapine16suppressed
Ondansetron OdtOndansetron16suppressed
Chlordiazepoxide HclChlordiazepoxide Hcl15suppressed
Amlodipine-OlmesartanAmlodipine Bes/Olmesartan Med14suppressed
ChlorthalidoneChlorthalidone14suppressed
Droplet Pen NeedlePen Needle, Diabetic14suppressed
Bisoprolol FumarateBisoprolol Fumarate13suppressed
Clorazepate DipotassiumClorazepate Dipotassium13suppressed
Estradiol (Twice Weekly)Estradiol13suppressed
FarxigaDapagliflozin Propanediol13suppressed
Liothyronine SodiumLiothyronine Sodium13suppressed
MetolazoneMetolazone13suppressed
PhenobarbitalPhenobarbital13suppressed
PrimidonePrimidone13suppressed
ValacyclovirValacyclovir Hcl13suppressed
Benazepril HclBenazepril Hcl12suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol12suppressed
Diltiazem 24hr ErDiltiazem Hcl12suppressed
DipyridamoleDipyridamole12suppressed
EntrestoSacubitril/Valsartan12suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate12suppressed
KeppraLevetiracetam12suppressed
Levalbuterol Tartrate HfaLevalbuterol Tartrate12suppressed
NystatinNystatin12suppressed
RytaryCarbidopa/Levodopa12suppressed
SpironolactoneSpironolactone12suppressed
Verapamil SrVerapamil Hcl12suppressed
Zolpidem Tartrate ErZolpidem Tartrate12suppressed
LubiprostoneLubiprostone11suppressed
LumiganBimatoprost11suppressed
Metoclopramide HclMetoclopramide Hcl11suppressed
Terbinafine HclTerbinafine Hcl11suppressed
TopamaxTopiramate11suppressed
Tramadol Hcl-AcetaminophenTramadol Hcl/Acetaminophen11suppressed

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 $360.88 · 20 records Novo Nordisk Inc ACCRUFER, Dexcom G6 Transmitter, Doc Band, ELIQUIS, EVENITY, FANAPT, FREESTYLE LIBRE, GEMTESA, JARDIANCE, NURTEC ODT, Ozempic, Rybelsus, Saxenda, The Cologuard Plus Collection Kit, VRAYLAR, Wegovy, XIFAXAN 8
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