Healthcare provider profile · identity verified

Robert T Key, MD

Family Practice · PRAIRIE DU CHIEN, WI · NPI 1801886312

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
Amlodipine BesylateAmlodipine Besylate35995
Atorvastatin CalciumAtorvastatin Calcium27977
Rosuvastatin CalciumRosuvastatin Calcium21055
LisinoprilLisinopril20559
Levothyroxine SodiumLevothyroxine Sodium18747
Metoprolol SuccinateMetoprolol Succinate16848
GabapentinGabapentin16536
Losartan PotassiumLosartan Potassium15342
OmeprazoleOmeprazole13744
SimvastatinSimvastatin12831
Tamsulosin HclTamsulosin Hcl11028
Metformin HclMetformin Hcl10027
Metoprolol TartrateMetoprolol Tartrate10022
Fluticasone PropionateFluticasone Propionate9740
HydrochlorothiazideHydrochlorothiazide8524
Metformin Hcl ErMetformin Hcl8526
Potassium ChloridePotassium Chloride8423
JardianceEmpagliflozin8115
OzempicSemaglutide8115
Pantoprazole SodiumPantoprazole Sodium7923
Pravastatin SodiumPravastatin Sodium6918
FurosemideFurosemide6522
Bupropion XlBupropion Hcl6322
XareltoRivaroxaban6211
Albuterol Sulfate HfaAlbuterol Sulfate6122
AllopurinolAllopurinol6119
PregabalinPregabalin59suppressed
Bisoprolol-HydrochlorothiazideBisoprolol/Hydrochlorothiazide5817
Warfarin SodiumWarfarin Sodium5814
EliquisApixaban5316
Amitriptyline HclAmitriptyline Hcl5214
Terazosin HclTerazosin Hcl5216
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4912
Buspirone HclBuspirone Hcl4712
AtenololAtenolol4612
PrednisonePrednisone4435
Sertraline HclSertraline Hcl4415
FinasterideFinasteride4112
Bisoprolol FumarateBisoprolol Fumarate3714
Isosorbide Mononitrate ErIsosorbide Mononitrate3711
FamotidineFamotidine36suppressed
EzetimibeEzetimibe35suppressed
MeloxicamMeloxicam3512
Diclofenac SodiumDiclofenac Sodium3411
Donepezil HclDonepezil Hcl34suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen34suppressed
Montelukast SodiumMontelukast Sodium34suppressed
AlprazolamAlprazolam33suppressed
GlimepirideGlimepiride33suppressed
MirtazapineMirtazapine32suppressed
JanuviaSitagliptin Phosphate31suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol30suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3020
ClopidogrelClopidogrel Bisulfate29suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl29suppressed
Duloxetine HclDuloxetine Hcl29suppressed
ClonazepamClonazepam28suppressed
GemfibrozilGemfibrozil28suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide26suppressed
Oxycodone HclOxycodone Hcl26suppressed
Trazodone HclTrazodone Hcl26suppressed
MethocarbamolMethocarbamol25suppressed
Propranolol HclPropranolol Hcl25suppressed
Ventolin HfaAlbuterol Sulfate24suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl23suppressed
Doxycycline HyclateDoxycycline Hyclate2321
Fluoxetine HclFluoxetine Hcl23suppressed
PhenobarbitalPhenobarbital22suppressed
FenofibrateFenofibrate Nanocrystallized21suppressed
SynthroidLevothyroxine Sodium21suppressed
Zolpidem TartrateZolpidem Tartrate21suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended20suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
BaclofenBaclofen19suppressed
DigoxinDigoxin19suppressed
Tramadol HclTramadol Hcl19suppressed
CelecoxibCelecoxib18suppressed
Citalopram HbrCitalopram Hydrobromide18suppressed
Enalapril MaleateEnalapril Maleate18suppressed
Oxybutynin Chloride ErOxybutynin Chloride18suppressed
VascepaIcosapent Ethyl18suppressed
Venlafaxine Hcl ErVenlafaxine Hcl18suppressed
Carbidopa-LevodopaCarbidopa/Levodopa17suppressed
Dicyclomine HclDicyclomine Hcl17suppressed
NitroglycerinNitroglycerin1713
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril16suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid16suppressed
Glipizide ErGlipizide15suppressed
Hydroxyzine HclHydroxyzine Hcl15suppressed
Memantine HclMemantine Hcl15suppressed
Paroxetine HclParoxetine Hcl15suppressed
SpironolactoneSpironolactone15suppressed
TorsemideTorsemide15suppressed
ValsartanValsartan15suppressed
Benazepril HclBenazepril Hcl14suppressed
Meclizine HclMeclizine Hcl14suppressed
Escitalopram OxalateEscitalopram Oxalate13suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog13suppressed
LorazepamLorazepam13suppressed
CarvedilolCarvedilol12suppressed
CephalexinCephalexin12suppressed
Clonidine HclClonidine Hcl12suppressed
Enoxaparin SodiumEnoxaparin Sodium12suppressed
Hydroxyzine PamoateHydroxyzine Pamoate12suppressed
Alendronate SodiumAlendronate Sodium11suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog11suppressed
Combivent RespimatIpratropium/Albuterol Sulfate11suppressed
Doxepin HclDoxepin Hcl11suppressed
Indomethacin ErIndomethacin11suppressed
NystatinNystatin11suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl11suppressed

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