Healthcare provider profile · identity verified

Ronald J Cooper, MD

Family Practice · WAUKESHA, WI · NPI 1396799615

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 Calcium615147
GabapentinGabapentin42296
FurosemideFurosemide40956
Amlodipine BesylateAmlodipine Besylate392108
LisinoprilLisinopril35994
Metoprolol SuccinateMetoprolol Succinate33390
Levothyroxine SodiumLevothyroxine Sodium27454
OmeprazoleOmeprazole26076
EliquisApixaban21435
Duloxetine HclDuloxetine Hcl21347
Tamsulosin HclTamsulosin Hcl20850
Metformin Hcl ErMetformin Hcl20655
Potassium ChloridePotassium Chloride18943
AllopurinolAllopurinol18036
Losartan PotassiumLosartan Potassium17142
Albuterol Sulfate HfaAlbuterol Sulfate16061
JardianceEmpagliflozin14628
Metformin HclMetformin Hcl14440
Glipizide ErGlipizide13534
Rosuvastatin CalciumRosuvastatin Calcium12537
HydrochlorothiazideHydrochlorothiazide12026
Warfarin SodiumWarfarin Sodium12023
Trazodone HclTrazodone Hcl11728
Metoprolol TartrateMetoprolol Tartrate10930
Fluoxetine HclFluoxetine Hcl10719
TrulicityDulaglutide10523
CarvedilolCarvedilol10424
Fluticasone-SalmeterolFluticasone Propion/Salmeterol10434
Sertraline HclSertraline Hcl9220
Lantus SolostarInsulin Glargine,hum.Rec.Anlog8918
EzetimibeEzetimibe8621
Tramadol HclTramadol Hcl8023
Pantoprazole SodiumPantoprazole Sodium7521
SimvastatinSimvastatin7119
ClopidogrelClopidogrel Bisulfate7021
Quetiapine FumarateQuetiapine Fumarate6919
SpironolactoneSpironolactone6818
Amitriptyline HclAmitriptyline Hcl6616
LovastatinLovastatin6613
Hydroxyzine HclHydroxyzine Hcl6416
Pioglitazone HclPioglitazone Hcl6020
PrednisonePrednisone5938
BumetanideBumetanide5414
Cyclobenzaprine HclCyclobenzaprine Hcl5317
BaclofenBaclofen4713
Citalopram HbrCitalopram Hydrobromide4712
FenofibrateFenofibrate Nanocrystallized46suppressed
Pravastatin SodiumPravastatin Sodium4512
Ropinirole HclRopinirole Hcl4512
Carbidopa-LevodopaCarbidopa/Levodopa43suppressed
Fluticasone PropionateFluticasone Propionate4318
LorazepamLorazepam4311
Hydralazine HclHydralazine Hcl4111
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen4117
LatanoprostLatanoprost41suppressed
Alendronate SodiumAlendronate Sodium40suppressed
Bupropion Hcl SrBupropion Hcl4012
Semglee (Yfgn) PenInsulin Glargine-Yfgn40suppressed
Tizanidine HclTizanidine Hcl4012
MyrbetriqMirabegron39suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr38suppressed
CephalexinCephalexin3530
Donepezil HclDonepezil Hcl35suppressed
AtenololAtenolol34suppressed
Divalproex SodiumDivalproex Sodium34suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl34suppressed
PregabalinPregabalin3314
AmoxicillinAmoxicillin3217
Venlafaxine Hcl ErVenlafaxine Hcl32suppressed
Escitalopram OxalateEscitalopram Oxalate30suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro30suppressed
LevetiracetamLevetiracetam30suppressed
Doxycycline MonohydrateDoxycycline Monohydrate2922
Isosorbide Mononitrate ErIsosorbide Mononitrate29suppressed
Doxazosin MesylateDoxazosin Mesylate28suppressed
GlipizideGlipizide27suppressed
LantusInsulin Glargine,hum.Rec.Anlog27suppressed
Niacin ErNiacin27suppressed
Oxybutynin ChlorideOxybutynin Chloride27suppressed
SynthroidLevothyroxine Sodium27suppressed
MirtazapineMirtazapine26suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl25suppressed
MeloxicamMeloxicam2511
Diclofenac SodiumDiclofenac Sodium2414
Montelukast SodiumMontelukast Sodium24suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2414
XareltoRivaroxaban24suppressed
Buspirone HclBuspirone Hcl22suppressed
Diltiazem 24hr ErDiltiazem Hcl22suppressed
LamotrigineLamotrigine22suppressed
Novolog FlexpenInsulin Aspart22suppressed
Spiriva HandihalerTiotropium Bromide22suppressed
Clonidine HclClonidine Hcl21suppressed
IrbesartanIrbesartan21suppressed
ClonazepamClonazepam20suppressed
Combivent RespimatIpratropium/Albuterol Sulfate20suppressed
Insulin Aspart FlexpenInsulin Aspart20suppressed
OzempicSemaglutide20suppressed
TopiramateTopiramate20suppressed
Clindamycin HclClindamycin Hcl1914
Dorzolamide-TimololDorzolamide/Timolol/Pf19suppressed
Propranolol HclPropranolol Hcl19suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic19suppressed
FamotidineFamotidine1812
MethocarbamolMethocarbamol18suppressed
Paroxetine HclParoxetine Hcl18suppressed
Colesevelam HclColesevelam Hcl17suppressed
FinasterideFinasteride17suppressed
MresviaRsv Vaccine, Pref, Mrna/Pf1717
NystatinNystatin17suppressed
OlanzapineOlanzapine17suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1713
TorsemideTorsemide17suppressed
ValsartanValsartan17suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide16suppressed
Meclizine HclMeclizine Hcl16suppressed
AlprazolamAlprazolam15suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc15suppressed
ChlorthalidoneChlorthalidone15suppressed
JanuviaSitagliptin Phosphate15suppressed
MethimazoleMethimazole15suppressed
Oxycodone HclOxycodone Hcl15suppressed
PrimidonePrimidone15suppressed
SucralfateSucralfate15suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter15suppressed
Zolpidem TartrateZolpidem Tartrate15suppressed
Dicyclomine HclDicyclomine Hcl14suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)14suppressed
GlimepirideGlimepiride14suppressed
Klor-Con M20Potassium Chloride14suppressed
Morphine Sulfate ErMorphine Sulfate14suppressed
Ondansetron HclOndansetron Hcl14suppressed
Ondansetron OdtOndansetron14suppressed
SymbicortBudesonide/Formoterol Fumarate14suppressed
CefdinirCefdinir13suppressed
HumalogInsulin Lispro13suppressed
LevofloxacinLevofloxacin13suppressed
Timolol MaleateTimolol Maleate13suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog13suppressed
AripiprazoleAripiprazole12suppressed
Enalapril MaleateEnalapril Maleate12suppressed
Memantine HclMemantine Hcl12suppressed
Nortriptyline HclNortriptyline Hcl12suppressed
TemazepamTemazepam12suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav11suppressed
Ciprofloxacin HclCiprofloxacin Hcl11suppressed
FenofibrateFenofibrate11suppressed
Nifedipine ErNifedipine11suppressed
NitroglycerinNitroglycerin11suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen11suppressed
Probenecid-ColchicineProbenecid/Colchicine11suppressed

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