Healthcare provider profile · identity verified

Thomas St Clair Williams, MD

Allopathic & Osteopathic Physicians|Family Medicine · MONROE, LA · NPI 1467422048

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 St Clair Williams, MD received $268.31 in general payments during 2025 across 11 reported records.

Bayer Healthcare Pharmaceuticals Inc. accounted for 35.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 6 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga, Jardiance, Kerendia.

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 94 claims for Farxiga by this doctor in 2024.

Bayer Healthcare 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 Kerendia as an associated drug or biological on 138674 records involving 48458 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Kerendia 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 187 claims for Jardiance by this doctor in 2024.

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

Payment overview · 2025

General Payments

$268.31

11 reported records · 6 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
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $96.0035.8%52025
Amgen Inc. Unresolved — no canonical attribution shown $78.2229.1%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $39.4114.7%22025
Insulet Corporation Unresolved — no canonical attribution shown $19.397.2%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $18.677.0%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $16.626.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$268.3111

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
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $96.00 5 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $78.22 1 2025
Source payment records
VERQUVO
Normalized: verquvo
Drug Merck Sharp & Dohme LLC $39.41 2 2025
Source payment records
Omnipod
Normalized: omnipod
Device Insulet Corporation $19.39 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $18.67 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $16.62 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
FARXIGA
farxiga
2025 Farxiga 2024 94 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 187 exact normalized Medicare Part D
Kerendia
kerendia
2025 Kerendia 2024 13
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
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
94 29
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Kerendia
open payments reported associated product
CMS Open Payments — General Payments
138674 supporting records · 48458 recipient NPIs · example record 1225434663
Kerendia · 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
187 30

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 Calcium656146
Potassium ChloridePotassium Chloride475105
OmeprazoleOmeprazole440104
FurosemideFurosemide41491
Levothyroxine SodiumLevothyroxine Sodium39868
GabapentinGabapentin38596
Amlodipine BesylateAmlodipine Besylate35893
Rosuvastatin CalciumRosuvastatin Calcium30476
EliquisApixaban27540
Albuterol Sulfate HfaAlbuterol Sulfate25777
Montelukast SodiumMontelukast Sodium25653
LisinoprilLisinopril25164
Metoprolol SuccinateMetoprolol Succinate23666
ClopidogrelClopidogrel Bisulfate22452
MounjaroTirzepatide22230
Pantoprazole SodiumPantoprazole Sodium18839
PrednisonePrednisone18870
JardianceEmpagliflozin18730
Donepezil HclDonepezil Hcl17729
Trazodone HclTrazodone Hcl17639
ValsartanValsartan17541
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen16438
Losartan PotassiumLosartan Potassium16344
Fluticasone PropionateFluticasone Propionate15457
OzempicSemaglutide15323
Tamsulosin HclTamsulosin Hcl15043
Sertraline HclSertraline Hcl14527
Nifedipine ErNifedipine13834
Tramadol HclTramadol Hcl13839
Metformin HclMetformin Hcl13639
Clonidine HclClonidine Hcl13028
HydrochlorothiazideHydrochlorothiazide13034
CarvedilolCarvedilol11931
Metformin Hcl ErMetformin Hcl11835
FamotidineFamotidine11733
Metoprolol TartrateMetoprolol Tartrate11524
Pravastatin SodiumPravastatin Sodium10935
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide10828
Trelegy ElliptaFluticasone/Umeclidin/Vilanter9818
FarxigaDapagliflozin Propanediol9429
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide9219
GlimepirideGlimepiride9122
CelecoxibCelecoxib8929
Escitalopram OxalateEscitalopram Oxalate8619
AllopurinolAllopurinol8323
Hydralazine HclHydralazine Hcl7727
MeloxicamMeloxicam7733
Quetiapine FumarateQuetiapine Fumarate7717
GlipizideGlipizide7628
Ropinirole HclRopinirole Hcl7617
AzithromycinAzithromycin7358
Warfarin SodiumWarfarin Sodium73suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen6813
SimvastatinSimvastatin6815
ClonazepamClonazepam6712
EzetimibeEzetimibe6723
LovastatinLovastatin6716
Triamcinolone AcetonideTriamcinolone Acetonide6643
NystatinNystatin6521
Tizanidine HclTizanidine Hcl6422
LevofloxacinLevofloxacin6351
SpironolactoneSpironolactone6313
Buspirone HclBuspirone Hcl6216
Diclofenac SodiumDiclofenac Sodium6020
TopiramateTopiramate6011
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril5915
Citalopram HbrCitalopram Hydrobromide5916
FinasterideFinasteride5615
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide5618
AtenololAtenolol5512
LinzessLinaclotide5515
MyrbetriqMirabegron53suppressed
PregabalinPregabalin5312
HydrocortisoneHydrocortisone5218
Meclizine HclMeclizine Hcl5222
Silver SulfadiazineSilver Sulfadiazine5216
Ciprofloxacin HclCiprofloxacin Hcl5139
Fluoxetine HclFluoxetine Hcl5112
Lantus SolostarInsulin Glargine,hum.Rec.Anlog5116
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav4940
BaclofenBaclofen4917
EntrestoSacubitril/Valsartan49suppressed
LevetiracetamLevetiracetam49suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim4832
XareltoRivaroxaban46suppressed
Alendronate SodiumAlendronate Sodium4512
Glipizide ErGlipizide45suppressed
Memantine HclMemantine Hcl45suppressed
LantusInsulin Glargine,hum.Rec.Anlog43suppressed
MupirocinMupirocin4329
SucralfateSucralfate4312
Doxycycline HyclateDoxycycline Hyclate4235
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst4231
Oxybutynin Chloride ErOxybutynin Chloride42suppressed
Bupropion Hcl SrBupropion Hcl41suppressed
ColchicineColchicine4116
FluconazoleFluconazole4031
Ibandronate SodiumIbandronate Sodium4014
Paroxetine HclParoxetine Hcl4011
Pioglitazone HclPioglitazone Hcl39suppressed
Acetaminophen-CodeineAcetaminophen With Codeine38suppressed
Amitriptyline HclAmitriptyline Hcl38suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3817
Esomeprazole MagnesiumEsomeprazole Magnesium3812
EstradiolEstradiol37suppressed
NaproxenNaproxen3718
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid3611
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine35suppressed
JanuviaSitagliptin Phosphate35suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride35suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl35suppressed
TrulancePlecanatide35suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol3315
MethylprednisoloneMethylprednisolone3325
Hydroxyzine PamoateHydroxyzine Pamoate3216
Stiolto RespimatTiotropium Br/Olodaterol Hcl32suppressed
IrbesartanIrbesartan31suppressed
Janumet XrSitagliptin Phos/Metformin Hcl30suppressed
LamotrigineLamotrigine30suppressed
MirtazapineMirtazapine30suppressed
Amiodarone HclAmiodarone Hcl2911
CefdinirCefdinir2822
Amlodipine-ValsartanAmlodipine Besylate/Valsartan26suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip2620
DapagliflozinDapagliflozin Propanediol26suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate26suppressed
Ketorolac TromethamineKetorolac Tromethamine26suppressed
Novolog FlexpenInsulin Aspart26suppressed
Xigduo XrDapaglifloz Propaned/Metformin26suppressed
Bisoprolol-HydrochlorothiazideBisoprolol/Hydrochlorothiazide25suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol2511
DiazepamDiazepam25suppressed
Doxazosin MesylateDoxazosin Mesylate25suppressed
Duloxetine HclDuloxetine Hcl25suppressed
Hydroxyzine HclHydroxyzine Hcl25suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate2515
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters25suppressed
Sumatriptan SuccinateSumatriptan Succinate25suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog25suppressed
DigoxinDigoxin24suppressed
FenofibrateFenofibrate24suppressed
NovologInsulin Aspart23suppressed
Zolpidem TartrateZolpidem Tartrate23suppressed
BumetanideBumetanide22suppressed
LansoprazoleLansoprazole22suppressed
LorazepamLorazepam22suppressed
Propranolol HclPropranolol Hcl22suppressed
RybelsusSemaglutide22suppressed
Tresiba Flextouch U-100Insulin Degludec22suppressed
Bupropion XlBupropion Hcl21suppressed
MethocarbamolMethocarbamol2111
Ondansetron OdtOndansetron2113
Phenytoin Sodium ExtendedPhenytoin Sodium Extended21suppressed
TrintellixVortioxetine Hydrobromide21suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl20suppressed
Fludrocortisone AcetateFludrocortisone Acetate20suppressed
MetolazoneMetolazone20suppressed
Insulin SyringeSyringe-Needle,insulin,0.5 Ml19suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide19suppressed
Breo ElliptaFluticasone/Vilanterol18suppressed
CarbamazepineCarbamazepine17suppressed
Metoclopramide HclMetoclopramide Hcl17suppressed
TemazepamTemazepam17suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr16suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate16suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine16suppressed
Ondansetron HclOndansetron Hcl1612
Promethazine HclPromethazine Hcl16suppressed
Testosterone CypionateTestosterone Cypionate16suppressed
Cyproheptadine HclCyproheptadine Hcl15suppressed
Isosorbide DinitrateIsosorbide Dinitrate15suppressed
Morphine Sulfate ErMorphine Sulfate15suppressed
NitroglycerinNitroglycerin15suppressed
OlanzapineOlanzapine15suppressed
Olmesartan MedoxomilOlmesartan Medoxomil15suppressed
RivastigmineRivastigmine15suppressed
Benazepril HclBenazepril Hcl14suppressed
CeftriaxoneCeftriaxone Sodium14suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate14suppressed
FycompaPerampanel14suppressed
PerphenazinePerphenazine14suppressed
PhenytoinPhenytoin14suppressed
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone13suppressed
EntacaponeEntacapone13suppressed
FenofibrateFenofibrate Nanocrystallized13suppressed
KerendiaFinerenone13suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic13suppressed
Solifenacin SuccinateSolifenacin Succinate13suppressed
SotalolSotalol Hcl13suppressed
TrulicityDulaglutide13suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic13suppressed
Ventolin HfaAlbuterol Sulfate13suppressed
Ammonium LactateAmmonium Lactate12suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa12suppressed
Combivent RespimatIpratropium/Albuterol Sulfate12suppressed
Divalproex SodiumDivalproex Sodium12suppressed
Doxepin HclDoxepin Hcl12suppressed
EszopicloneEszopiclone12suppressed
RisperidoneRisperidone12suppressed
Tolterodine TartrateTolterodine Tartrate12suppressed
Venlafaxine Hcl ErVenlafaxine Hcl12suppressed
CephalexinCephalexin11suppressed
CozaarLosartan Potassium11suppressed
Dexamethasone Sodium PhosphateDexamethasone Sodium Phosphate11suppressed
Diltiazem HclDiltiazem Hcl11suppressed
IbuprofenIbuprofen11suppressed
Novolog Mix 70-30Insulin Aspart Prot/Insuln Asp11suppressed
Oseltamivir PhosphateOseltamivir Phosphate1111
Ranolazine ErRanolazine11suppressed
SulfasalazineSulfasalazine11suppressed
Terazosin HclTerazosin Hcl11suppressed
Varenicline TartrateVarenicline Tartrate11suppressed

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 $268.31 · 11 records Bayer Healthcare Pharmaceuticals Inc. EVENITY, FARXIGA, JARDIANCE, Kerendia, Omnipod, VERQUVO 3
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