Healthcare provider profile · identity verified

Guy Agostino, M.D.

Internal Medicine · LA GRANGE, IL · NPI 1992769822

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 Calcium32090
Amlodipine BesylateAmlodipine Besylate31884
LisinoprilLisinopril22860
Levothyroxine SodiumLevothyroxine Sodium20757
Metformin HclMetformin Hcl18852
Losartan PotassiumLosartan Potassium15342
SimvastatinSimvastatin15138
HydrochlorothiazideHydrochlorothiazide14038
Metoprolol SuccinateMetoprolol Succinate12735
AlprazolamAlprazolam12532
Pravastatin SodiumPravastatin Sodium12536
OmeprazoleOmeprazole12231
Rosuvastatin CalciumRosuvastatin Calcium11532
GlimepirideGlimepiride11125
Pantoprazole SodiumPantoprazole Sodium10433
Citalopram HbrCitalopram Hydrobromide10322
IrbesartanIrbesartan8621
Metformin Hcl ErMetformin Hcl7122
Sertraline HclSertraline Hcl6921
Metoprolol TartrateMetoprolol Tartrate6620
AllopurinolAllopurinol6317
Tamsulosin HclTamsulosin Hcl6321
Venlafaxine Hcl ErVenlafaxine Hcl56suppressed
ClonazepamClonazepam55suppressed
Fluticasone PropionateFluticasone Propionate5324
Zolpidem TartrateZolpidem Tartrate52suppressed
CefuroximeCefuroxime Axetil5043
LorazepamLorazepam46suppressed
GabapentinGabapentin4515
EliquisApixaban44suppressed
Escitalopram OxalateEscitalopram Oxalate4211
FurosemideFurosemide4212
LovastatinLovastatin36suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen35suppressed
MethylprednisoloneMethylprednisolone3530
FenofibrateFenofibrate Nanocrystallized34suppressed
Potassium ChloridePotassium Chloride3413
AzithromycinAzithromycin3328
CefdinirCefdinir3123
ClopidogrelClopidogrel Bisulfate30suppressed
ValsartanValsartan30suppressed
Alendronate SodiumAlendronate Sodium29suppressed
JanuviaSitagliptin Phosphate29suppressed
XareltoRivaroxaban29suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide28suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide26suppressed
PaxlovidNirmatrelvir/Ritonavir2524
Warfarin SodiumWarfarin Sodium25suppressed
Albuterol Sulfate HfaAlbuterol Sulfate2414
OzempicSemaglutide24suppressed
SpironolactoneSpironolactone23suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2314
FinasterideFinasteride22suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide22suppressed
Nifedipine ErNifedipine22suppressed
Enalapril MaleateEnalapril Maleate21suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl2013
EzetimibeEzetimibe20suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol20suppressed
MeloxicamMeloxicam2015
CarvedilolCarvedilol19suppressed
CephalexinCephalexin1914
Duloxetine HclDuloxetine Hcl19suppressed
FamotidineFamotidine18suppressed
Rabeprazole SodiumRabeprazole Sodium18suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1818
AtenololAtenolol17suppressed
NystatinNystatin1712
Donepezil HclDonepezil Hcl16suppressed
Doxazosin MesylateDoxazosin Mesylate16suppressed
Oxybutynin Chloride ErOxybutynin Chloride16suppressed
Pioglitazone HclPioglitazone Hcl16suppressed
TemazepamTemazepam16suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril15suppressed
Montelukast SodiumMontelukast Sodium15suppressed
Benazepril HclBenazepril Hcl14suppressed
Bisoprolol FumarateBisoprolol Fumarate14suppressed
Meclizine HclMeclizine Hcl14suppressed
TorsemideTorsemide14suppressed
LansoprazoleLansoprazole13suppressed
Olmesartan MedoxomilOlmesartan Medoxomil13suppressed
Trazodone HclTrazodone Hcl13suppressed
LevofloxacinLevofloxacin12suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav11suppressed
EszopicloneEszopiclone11suppressed
JardianceEmpagliflozin11suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters11suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid11suppressed

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