Healthcare provider profile · identity verified

John S Wisniewski, MD

Allopathic & Osteopathic Physicians|Internal Medicine · HARTFORD, CT · NPI 1689786568

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 John S Wisniewski, MD received $89.31 in general payments during 2025 across 5 reported records.

Bayer Healthcare Pharmaceuticals Inc. accounted for 65.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

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

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 253 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$89.31

5 reported records · 2 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 $58.0165.0%32025
Novo Nordisk Inc Unresolved — no canonical attribution shown $31.3035.0%22025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$89.315

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. $58.01 3 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $16.96 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $16.96 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
Ozempic
ozempic
2025 Ozempic 2024 253 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
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
253 46

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 Calcium1159316
Amlodipine BesylateAmlodipine Besylate701192
Rosuvastatin CalciumRosuvastatin Calcium568150
Levothyroxine SodiumLevothyroxine Sodium481126
Losartan PotassiumLosartan Potassium34799
HydrochlorothiazideHydrochlorothiazide30187
Metformin HclMetformin Hcl29278
AllopurinolAllopurinol27974
OzempicSemaglutide25346
LisinoprilLisinopril24270
Metoprolol SuccinateMetoprolol Succinate24070
OmeprazoleOmeprazole23465
SimvastatinSimvastatin23161
Olmesartan MedoxomilOlmesartan Medoxomil21557
Tamsulosin HclTamsulosin Hcl20754
Pantoprazole SodiumPantoprazole Sodium17750
ValsartanValsartan16841
SynthroidLevothyroxine Sodium15640
GabapentinGabapentin15442
Metformin Hcl ErMetformin Hcl15343
FurosemideFurosemide14345
MounjaroTirzepatide14322
Tramadol HclTramadol Hcl14132
EzetimibeEzetimibe12737
AtenololAtenolol12631
Escitalopram OxalateEscitalopram Oxalate12034
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide11535
Trazodone HclTrazodone Hcl11437
EliquisApixaban11328
Oxycodone HclOxycodone Hcl11014
CarvedilolCarvedilol10831
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide10326
Nebivolol HclNebivolol Hcl9925
SpironolactoneSpironolactone9728
AlprazolamAlprazolam9331
Sertraline HclSertraline Hcl9221
PrednisonePrednisone9043
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide8724
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen8713
LorazepamLorazepam8631
Pravastatin SodiumPravastatin Sodium8624
ClonazepamClonazepam8413
ChlorthalidoneChlorthalidone8324
Albuterol Sulfate HfaAlbuterol Sulfate8231
Zolpidem TartrateZolpidem Tartrate8121
TrulicityDulaglutide8013
Bupropion XlBupropion Hcl7420
FarxigaDapagliflozin Propanediol7417
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen7313
Fluticasone PropionateFluticasone Propionate7222
Duloxetine HclDuloxetine Hcl7119
FinasterideFinasteride7017
JanumetSitagliptin Phos/Metformin Hcl6918
MirtazapineMirtazapine6821
ClopidogrelClopidogrel Bisulfate6514
Montelukast SodiumMontelukast Sodium6318
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril6114
PregabalinPregabalin5614
DiazepamDiazepam5513
IrbesartanIrbesartan5516
XareltoRivaroxaban5511
JanuviaSitagliptin Phosphate54suppressed
GlimepirideGlimepiride5315
Pioglitazone HclPioglitazone Hcl5215
FamotidineFamotidine51suppressed
NystatinNystatin5118
Citalopram HbrCitalopram Hydrobromide4812
JardianceEmpagliflozin4814
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone4414
Ondansetron HclOndansetron Hcl44suppressed
Potassium ChloridePotassium Chloride4416
Trelegy ElliptaFluticasone/Umeclidin/Vilanter44suppressed
Triamcinolone AcetonideTriamcinolone Acetonide4421
Zolpidem Tartrate ErZolpidem Tartrate43suppressed
Metoprolol TartrateMetoprolol Tartrate4111
Alendronate SodiumAlendronate Sodium4013
LidocaineLidocaine4012
Fluoxetine HclFluoxetine Hcl39suppressed
Dexlansoprazole DrDexlansoprazole38suppressed
Doxycycline MonohydrateDoxycycline Monohydrate3833
Hydralazine HclHydralazine Hcl38suppressed
LansoprazoleLansoprazole36suppressed
Benazepril HclBenazepril Hcl35suppressed
TorsemideTorsemide3512
MethocarbamolMethocarbamol3311
ValacyclovirValacyclovir Hcl3320
BaclofenBaclofen32suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide31suppressed
CephalexinCephalexin3025
Esomeprazole MagnesiumEsomeprazole Magnesium30suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog30suppressed
MeloxicamMeloxicam28suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic2813
Benazepril-HydrochlorothiazideBenazepril/Hydrochlorothiazide27suppressed
Doxazosin MesylateDoxazosin Mesylate27suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide26suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine25suppressed
EszopicloneEszopiclone25suppressed
Methylphenidate HclMethylphenidate Hcl25suppressed
RamiprilRamipril25suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters24suppressed
Sumatriptan SuccinateSumatriptan Succinate24suppressed
SymbicortBudesonide/Formoterol Fumarate24suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip23suppressed
Hydroxyzine HclHydroxyzine Hcl23suppressed
OlanzapineOlanzapine23suppressed
TemazepamTemazepam23suppressed
GemtesaVibegron22suppressed
NateglinideNateglinide22suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin21suppressed
Ropinirole HclRopinirole Hcl21suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl20suppressed
HydrocortisoneHydrocortisone20suppressed
IbuprofenIbuprofen20suppressed
MyrbetriqMirabegron20suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
Amitriptyline HclAmitriptyline Hcl19suppressed
Amlodipine-ValsartanAmlodipine Besylate/Valsartan19suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1917
Donepezil HclDonepezil Hcl19suppressed
FenofibrateFenofibrate Nanocrystallized19suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro19suppressed
TelmisartanTelmisartan19suppressed
AcyclovirAcyclovir18suppressed
Morphine Sulfate ErMorphine Sulfate18suppressed
Spironolactone-HctzSpironolact/Hydrochlorothiazid18suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid18suppressed
Venlafaxine Hcl ErVenlafaxine Hcl18suppressed
Diclofenac SodiumDiclofenac Sodium17suppressed
Meclizine HclMeclizine Hcl17suppressed
Novolog FlexpenInsulin Aspart17suppressed
Ventolin HfaAlbuterol Sulfate17suppressed
Wixela InhubFluticasone Propion/Salmeterol17suppressed
Oxybutynin Chloride ErOxybutynin Chloride16suppressed
Potassium Citrate ErPotassium Citrate16suppressed
Quetiapine FumarateQuetiapine Fumarate16suppressed
Acetaminophen-CodeineAcetaminophen With Codeine15suppressed
AmoxicillinAmoxicillin1512
Carbidopa-LevodopaCarbidopa/Levodopa15suppressed
FenofibrateFenofibrate15suppressed
Paroxetine HclParoxetine Hcl15suppressed
Verapamil ErVerapamil Hcl15suppressed
Azelastine HclAzelastine Hcl14suppressed
PaxlovidNirmatrelvir/Ritonavir1414
AzathioprineAzathioprine13suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog13suppressed
Buspirone HclBuspirone Hcl13suppressed
Clobetasol PropionateClobetasol Propionate1311
DesloratadineDesloratadine13suppressed
FenofibrateFenofibrate,micronized13suppressed
InvokanaCanagliflozin13suppressed
Klor-Con M20Potassium Chloride13suppressed
LevetiracetamLevetiracetam13suppressed
Memantine HclMemantine Hcl13suppressed
Nifedipine ErNifedipine13suppressed
TradjentaLinagliptin13suppressed
UrsodiolUrsodiol13suppressed
AzithromycinAzithromycin1212
CefadroxilCefadroxil12suppressed
CelecoxibCelecoxib12suppressed
CreonLipase/Protease/Amylase12suppressed
Janumet XrSitagliptin Phos/Metformin Hcl12suppressed
LinzessLinaclotide12suppressed
LovastatinLovastatin12suppressed
NadololNadolol12suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1211
Olmesartan-Amlodipine-HctzOlmesartan/Amlodipin/Hcthiazid12suppressed
Raloxifene HclRaloxifene Hcl12suppressed
Repatha SureclickEvolocumab12suppressed
SfFluoride (Sodium)12suppressed
Xtampza ErOxycodone Myristate12suppressed
Bupropion Hcl SrBupropion Hcl11suppressed
Econazole NitrateEconazole Nitrate11suppressed
EstradiolEstradiol11suppressed
Ipratropium BromideIpratropium Bromide11suppressed
KetoconazoleKetoconazole11suppressed
Serevent DiskusSalmeterol Xinafoate11suppressed

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 $89.31 · 5 records Bayer Healthcare Pharmaceuticals Inc. Kerendia, Ozempic, Rybelsus 1
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