Healthcare provider profile · identity verified

David M Grganto, MD

Family Practice · WINFIELD, IL · NPI 1679508766

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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 Calcium499152
Levothyroxine SodiumLevothyroxine Sodium362101
Rosuvastatin CalciumRosuvastatin Calcium354113
Amlodipine BesylateAmlodipine Besylate341101
LisinoprilLisinopril30278
Metoprolol SuccinateMetoprolol Succinate23351
OmeprazoleOmeprazole18454
SimvastatinSimvastatin17248
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide15640
Metformin Hcl ErMetformin Hcl15251
Escitalopram OxalateEscitalopram Oxalate13739
Tamsulosin HclTamsulosin Hcl13542
Losartan PotassiumLosartan Potassium13341
Pantoprazole SodiumPantoprazole Sodium12042
IrbesartanIrbesartan11135
AlprazolamAlprazolam10222
Metformin HclMetformin Hcl9930
Fluticasone PropionateFluticasone Propionate9735
GlimepirideGlimepiride9029
Potassium ChloridePotassium Chloride8519
Pravastatin SodiumPravastatin Sodium8426
HydrochlorothiazideHydrochlorothiazide8227
JardianceEmpagliflozin7922
MounjaroTirzepatide7813
AllopurinolAllopurinol6618
Trazodone HclTrazodone Hcl6622
FamotidineFamotidine5820
FinasterideFinasteride5816
EliquisApixaban56suppressed
Zolpidem TartrateZolpidem Tartrate5417
FurosemideFurosemide5315
Montelukast SodiumMontelukast Sodium5316
Sertraline HclSertraline Hcl5012
FenofibrateFenofibrate4813
Albuterol Sulfate HfaAlbuterol Sulfate4722
GabapentinGabapentin4418
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide4314
ValsartanValsartan4313
JanuviaSitagliptin Phosphate41suppressed
AmoxicillinAmoxicillin4023
Diltiazem 24hr Er (Cd)Diltiazem Hcl4011
MirtazapineMirtazapine40suppressed
OzempicSemaglutide38suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid3611
EzetimibeEzetimibe34suppressed
CarvedilolCarvedilol3311
Glipizide ErGlipizide33suppressed
Azelastine HclAzelastine Hcl32suppressed
PrednisonePrednisone3232
Ventolin HfaAlbuterol Sulfate31suppressed
Metoprolol TartrateMetoprolol Tartrate3013
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide30suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide29suppressed
SynthroidLevothyroxine Sodium29suppressed
Fluoxetine HclFluoxetine Hcl28suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog28suppressed
Paroxetine HclParoxetine Hcl27suppressed
Enalapril MaleateEnalapril Maleate26suppressed
ValacyclovirValacyclovir Hcl26suppressed
ClopidogrelClopidogrel Bisulfate25suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl2411
MeloxicamMeloxicam24suppressed
GlipizideGlipizide23suppressed
Meclizine HclMeclizine Hcl23suppressed
CelecoxibCelecoxib22suppressed
IbuprofenIbuprofen22suppressed
Venlafaxine Hcl ErVenlafaxine Hcl22suppressed
Bupropion XlBupropion Hcl21suppressed
Citalopram HbrCitalopram Hydrobromide21suppressed
Duloxetine HclDuloxetine Hcl21suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol21suppressed
Hydralazine HclHydralazine Hcl21suppressed
Nebivolol HclNebivolol Hcl21suppressed
BumetanideBumetanide20suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip2018
Donepezil HclDonepezil Hcl20suppressed
Amitriptyline HclAmitriptyline Hcl18suppressed
Armour ThyroidThyroid,pork18suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium18suppressed
LansoprazoleLansoprazole18suppressed
Pioglitazone HclPioglitazone Hcl18suppressed
Sumatriptan SuccinateSumatriptan Succinate18suppressed
Buspirone HclBuspirone Hcl17suppressed
Doxycycline HyclateDoxycycline Hyclate1717
Ondansetron OdtOndansetron17suppressed
AzithromycinAzithromycin1615
Doxazosin MesylateDoxazosin Mesylate16suppressed
FenofibrateFenofibrate Nanocrystallized16suppressed
Triamcinolone AcetonideTriamcinolone Acetonide1611
Amiodarone HclAmiodarone Hcl15suppressed
Benazepril HclBenazepril Hcl14suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin14suppressed
MethylprednisoloneMethylprednisolone1411
Rabeprazole SodiumRabeprazole Sodium14suppressed
RybelsusSemaglutide14suppressed
VagifemEstradiol13suppressed
Verapamil ErVerapamil Hcl13suppressed
Vitamin D2Ergocalciferol (Vitamin D2)13suppressed
XareltoRivaroxaban13suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril12suppressed
Fludrocortisone AcetateFludrocortisone Acetate12suppressed
Humalog Kwikpen U-100Insulin Lispro12suppressed
Janumet XrSitagliptin Phos/Metformin Hcl12suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride11suppressed
Methylphenidate HclMethylphenidate Hcl11suppressed
RizatriptanRizatriptan Benzoate11suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim11suppressed

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
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