Healthcare provider profile · identity verified

Thomas C Gniadek, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · WATERBURY, CT · NPI 1972591931

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 C Gniadek, M.D. received $1,294.75 in general payments during 2025 across 78 reported records.

Boehringer Ingelheim Pharmaceuticals, Inc. accounted for 16.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 19 associated products.

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

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 CREON as an associated drug or biological on 91561 records involving 20616 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Creon 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 197 claims for Synthroid 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 104 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 104 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 394 claims for Mounjaro 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 114 claims for Ozempic 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 Tresiba as an associated drug or biological on 415 records involving 264 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Tresiba by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,294.75

78 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
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $216.8616.8%142025
Abbott Laboratories Unresolved — no canonical attribution shown $197.8815.3%102025
Novo Nordisk Inc Unresolved — no canonical attribution shown $191.0414.8%172025
Insulet Corporation Unresolved — no canonical attribution shown $171.6613.3%142025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $100.797.8%52025
Amgen Inc. Unresolved — no canonical attribution shown $95.087.3%42025
Lilly USA, LLC Unresolved — no canonical attribution shown $79.626.2%32025
Xeris Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $64.265.0%32025
Antares Pharma, Inc. Unresolved — no canonical attribution shown $48.923.8%22025
Intra-Sana Laboratories Unresolved — no canonical attribution shown $37.612.9%22025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $29.052.2%12025
Amneal Pharmaceuticals LLC Unresolved — no canonical attribution shown $27.122.1%12025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$20.461.6%12025
ABBVIE INC. Unresolved — no canonical attribution shown $14.401.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,294.7578

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
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $296.48 17 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $197.88 10 2025
Source payment records
Omnipod
Normalized: omnipod
Device Insulet Corporation $171.66 14 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $100.79 5 2025
Source payment records
TEPEZZA
Normalized: tepezza
Biological Amgen Inc. $75.94 3 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $75.54 9 2025
Source payment records
XYOSTED
Normalized: xyosted
Drug Antares Pharma, Inc. $48.92 2 2025
Source payment records
GVOKE HYPOPEN
Normalized: gvoke hypopen
Drug Xeris Pharmaceuticals, Inc. $44.97 2 2025
Source payment records
GLYCATE
Normalized: glycate
Drug Intra-Sana Laboratories $37.61 2 2025
Source payment records
RELTONE 200 MG
Normalized: reltone 200 mg
Drug Intra-Sana Laboratories $37.61 2 2025
Source payment records
RELTONE 400 MG
Normalized: reltone 400 mg
Drug Intra-Sana Laboratories $37.61 2 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $29.05 1 2025
Source payment records
UNITHROID
Normalized: unithroid
Drug Amneal Pharmaceuticals LLC $27.12 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $23.36 1 2025
Source payment records
MINIMED 780G
Normalized: minimed 780g
Device Medtronic, Inc. $20.46 1 2025
Source payment records
RECORLEV
Normalized: recorlev
Drug Xeris Pharmaceuticals, Inc. $19.29 1 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $19.14 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $19.14 1 2025
Source payment records
SYNTHROID
Normalized: synthroid
Drug ABBVIE INC. $14.40 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
JARDIANCE
jardiance
2025 Jardiance 2024 104 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 114 exact normalized Medicare Part D
SYNTHROID
synthroid
2025 Synthroid 2024 197 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 CREON
open payments reported associated product
CMS Open Payments — General Payments
91561 supporting records · 20616 recipient NPIs · example record 1201352608
Creon · 2024
Exact normalized brand match · 1 Part D row
21 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
197 48
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
104 32
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
104 32
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
394 60
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
114 18
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Tresiba
open payments reported associated product
CMS Open Payments — General Payments
415 supporting records · 264 recipient NPIs · example record 1188130328
Tresiba · 2024
Exact normalized brand match · 1 Part D row
14 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 Sodium905236
Rosuvastatin CalciumRosuvastatin Calcium434108
MounjaroTirzepatide39460
LisinoprilLisinopril30480
Metoprolol SuccinateMetoprolol Succinate24560
Amlodipine BesylateAmlodipine Besylate23770
EzetimibeEzetimibe23258
Losartan PotassiumLosartan Potassium20655
Metformin HclMetformin Hcl20257
SynthroidLevothyroxine Sodium19748
Pantoprazole SodiumPantoprazole Sodium17648
FurosemideFurosemide17353
Pravastatin SodiumPravastatin Sodium15043
Nano 2nd Gen Pen NeedlePen Needle, Diabetic14252
Lantus SolostarInsulin Glargine,hum.Rec.Anlog14143
HydrochlorothiazideHydrochlorothiazide13938
Atorvastatin CalciumAtorvastatin Calcium13638
Tresiba Flextouch U-100Insulin Degludec13638
GabapentinGabapentin13234
Escitalopram OxalateEscitalopram Oxalate13133
Zolpidem TartrateZolpidem Tartrate12923
OzempicSemaglutide11418
GlimepirideGlimepiride11231
Metformin Hcl ErMetformin Hcl11135
AlprazolamAlprazolam11025
JardianceEmpagliflozin10432
NateglinideNateglinide9428
Montelukast SodiumMontelukast Sodium9028
AllopurinolAllopurinol8022
EliquisApixaban8013
Humalog Kwikpen U-100Insulin Lispro7326
Potassium ChloridePotassium Chloride7320
Albuterol Sulfate HfaAlbuterol Sulfate6524
Alendronate SodiumAlendronate Sodium6512
Tamsulosin HclTamsulosin Hcl6118
Tramadol HclTramadol Hcl58suppressed
FarxigaDapagliflozin Propanediol5715
OmeprazoleOmeprazole5518
Pioglitazone HclPioglitazone Hcl5516
ClopidogrelClopidogrel Bisulfate5115
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog5013
Tresiba Flextouch U-200Insulin Degludec5016
JanuviaSitagliptin Phosphate4914
LidocaineLidocaine4712
SimvastatinSimvastatin4612
NovologInsulin Aspart4512
ClonazepamClonazepam43suppressed
Metoprolol TartrateMetoprolol Tartrate4312
HumalogInsulin Lispro4214
Novolog FlexpenInsulin Aspart4223
Klor-Con M20Potassium Chloride4112
Hydroxyzine HclHydroxyzine Hcl3816
Olmesartan MedoxomilOlmesartan Medoxomil37suppressed
Repatha SureclickEvolocumab37suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip3518
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic35suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic3514
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen34suppressed
LorazepamLorazepam34suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog3411
Sertraline HclSertraline Hcl32suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic3112
AtenololAtenolol30suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium30suppressed
Lyumjev Kwikpen U-100Insulin Lispro-Aabc30suppressed
RamiprilRamipril30suppressed
Fluticasone PropionateFluticasone Propionate2811
Insulin Lispro Kwikpen U-100Insulin Lispro28suppressed
MethimazoleMethimazole27suppressed
Trazodone HclTrazodone Hcl26suppressed
Memantine HclMemantine Hcl25suppressed
TradjentaLinagliptin25suppressed
Bupropion XlBupropion Hcl24suppressed
Meclizine HclMeclizine Hcl24suppressed
Humulin R U-500 KwikpenInsulin Regular, Human23suppressed
PrednisonePrednisone23suppressed
SpironolactoneSpironolactone23suppressed
VascepaIcosapent Ethyl23suppressed
Gvoke Hypopen 2-PackGlucagon2218
HydrocortisoneHydrocortisone22suppressed
PregabalinPregabalin22suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid22suppressed
CreonLipase/Protease/Amylase21suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl21suppressed
LansoprazoleLansoprazole21suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters21suppressed
AmoxicillinAmoxicillin20suppressed
Doxazosin MesylateDoxazosin Mesylate20suppressed
Humulin 70-30Insulin Nph Hum/Reg Insulin Hm20suppressed
Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/720suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl19suppressed
FenofibrateFenofibrate Nanocrystallized19suppressed
FamotidineFamotidine18suppressed
JanumetSitagliptin Phos/Metformin Hcl18suppressed
CephalexinCephalexin17suppressed
SucralfateSucralfate17suppressed
Calcitonin-SalmonCalcitonin,salmon,synthetic16suppressed
Donepezil HclDonepezil Hcl15suppressed
Insulin SyringeSyringe And Needle,insulin,1ml15suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate15suppressed
NystatinNystatin15suppressed
Propranolol HclPropranolol Hcl15suppressed
TelmisartanTelmisartan15suppressed
Zolpidem Tartrate ErZolpidem Tartrate15suppressed
Benazepril HclBenazepril Hcl14suppressed
CarvedilolCarvedilol14suppressed
Doxycycline HyclateDoxycycline Hyclate14suppressed
EszopicloneEszopiclone14suppressed
FinasterideFinasteride14suppressed
Fludrocortisone AcetateFludrocortisone Acetate14suppressed
NitroglycerinNitroglycerin14suppressed
Pitavastatin CalciumPitavastatin Calcium14suppressed
TadalafilTadalafil14suppressed
TresibaInsulin Degludec14suppressed
Warfarin SodiumWarfarin Sodium14suppressed
Breo ElliptaFluticasone/Vilanterol13suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine13suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin13suppressed
Glipizide ErGlipizide13suppressed
MeloxicamMeloxicam13suppressed
Raloxifene HclRaloxifene Hcl13suppressed
Repatha SyringeEvolocumab13suppressed
SotalolSotalol Hcl13suppressed
Vitamin D2Ergocalciferol (Vitamin D2)13suppressed
AzithromycinAzithromycin12suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine12suppressed
ColchicineColchicine12suppressed
EuthyroxLevothyroxine Sodium12suppressed
Fenofibric AcidFenofibric Acid (Choline)12suppressed
Folic AcidFolic Acid12suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst12suppressed
Ondansetron OdtOndansetron12suppressed
Testosterone CypionateTestosterone Cypionate12suppressed
Tramadol Hcl-AcetaminophenTramadol Hcl/Acetaminophen12suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril11suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr11suppressed
DiazepamDiazepam11suppressed
Humalog Mix 50-50 KwikpenInsulin Lispro Protamin/Lispro11suppressed
Labetalol HclLabetalol Hcl11suppressed
Oxybutynin Chloride ErOxybutynin Chloride11suppressed

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 $1,294.75 · 78 records Boehringer Ingelheim Pharmaceuticals, Inc. EVENITY, FREESTYLE LIBRE 3, GLYCATE, GVOKE HYPOPEN, JARDIANCE, LEQVIO, MINIMED 780G, Omnipod, Ozempic, PROLIA, RECORLEV, RELTONE 200 MG, RELTONE 400 MG, REZDIFFRA, SYNTHROID, TEPEZZA, UNITHROID, Wegovy, XYOSTED 7
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