Healthcare provider profile · identity verified

John J Conzemius, MD

Internal Medicine · LA CROSSE, WI · NPI 1568467827

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 Calcium700199
Amlodipine BesylateAmlodipine Besylate414105
LisinoprilLisinopril389110
Metoprolol SuccinateMetoprolol Succinate33782
OmeprazoleOmeprazole30584
Rosuvastatin CalciumRosuvastatin Calcium29583
EliquisApixaban27856
Levothyroxine SodiumLevothyroxine Sodium24350
Losartan PotassiumLosartan Potassium20361
SimvastatinSimvastatin20151
Tamsulosin HclTamsulosin Hcl18446
Metformin Hcl ErMetformin Hcl16651
TrulicityDulaglutide16029
HydrochlorothiazideHydrochlorothiazide15945
AllopurinolAllopurinol13937
Metoprolol TartrateMetoprolol Tartrate13634
JardianceEmpagliflozin12119
Fluticasone PropionateFluticasone Propionate11149
GabapentinGabapentin11133
GlimepirideGlimepiride10617
Sertraline HclSertraline Hcl9925
Metformin HclMetformin Hcl9721
Pantoprazole SodiumPantoprazole Sodium9422
FurosemideFurosemide8926
ChlorthalidoneChlorthalidone8625
Hydroxyzine HclHydroxyzine Hcl8616
Pravastatin SodiumPravastatin Sodium8522
Montelukast SodiumMontelukast Sodium7917
Albuterol Sulfate HfaAlbuterol Sulfate7832
FamotidineFamotidine7518
FinasterideFinasteride7520
ValsartanValsartan7521
Isosorbide Mononitrate ErIsosorbide Mononitrate6211
Warfarin SodiumWarfarin Sodium6218
Citalopram HbrCitalopram Hydrobromide6115
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr55suppressed
Quetiapine FumarateQuetiapine Fumarate50suppressed
BumetanideBumetanide46suppressed
LansoprazoleLansoprazole46suppressed
Trazodone HclTrazodone Hcl4514
MirtazapineMirtazapine4414
SpironolactoneSpironolactone4413
Potassium ChloridePotassium Chloride4311
Venlafaxine Hcl ErVenlafaxine Hcl43suppressed
Escitalopram OxalateEscitalopram Oxalate41suppressed
Tramadol HclTramadol Hcl4111
Insulin Glargine-YfgnInsulin Glargine-Yfgn40suppressed
Doxazosin MesylateDoxazosin Mesylate38suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog37suppressed
Fluoxetine HclFluoxetine Hcl3611
Fluticasone-SalmeterolFluticasone Propion/Salmeterol36suppressed
Memantine HclMemantine Hcl36suppressed
Buspirone HclBuspirone Hcl35suppressed
ClopidogrelClopidogrel Bisulfate35suppressed
Duloxetine HclDuloxetine Hcl35suppressed
NitroglycerinNitroglycerin3326
Trelegy ElliptaFluticasone/Umeclidin/Vilanter33suppressed
Bupropion Hcl SrBupropion Hcl32suppressed
Potassium Citrate ErPotassium Citrate31suppressed
CarvedilolCarvedilol26suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl26suppressed
PrednisonePrednisone2616
AtenololAtenolol25suppressed
Paroxetine HclParoxetine Hcl25suppressed
Terazosin HclTerazosin Hcl24suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen23suppressed
Sumatriptan SuccinateSumatriptan Succinate23suppressed
BaclofenBaclofen22suppressed
JanuviaSitagliptin Phosphate21suppressed
LoperamideLoperamide Hcl21suppressed
Oxybutynin ChlorideOxybutynin Chloride21suppressed
IrbesartanIrbesartan20suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide19suppressed
RamiprilRamipril19suppressed
Alendronate SodiumAlendronate Sodium18suppressed
AmoxicillinAmoxicillin18suppressed
FarxigaDapagliflozin Propanediol18suppressed
LovastatinLovastatin18suppressed
MeloxicamMeloxicam18suppressed
Nifedipine ErNifedipine18suppressed
EntrestoSacubitril/Valsartan17suppressed
Klor-Con M20Potassium Chloride17suppressed
Triamcinolone AcetonideTriamcinolone Acetonide17suppressed
EstradiolEstradiol16suppressed
LamotrigineLamotrigine16suppressed
Morphine Sulfate ErMorphine Sulfate16suppressed
NadololNadolol16suppressed
SynthroidLevothyroxine Sodium16suppressed
Dicyclomine HclDicyclomine Hcl15suppressed
Doxycycline MonohydrateDoxycycline Monohydrate15suppressed
MetronidazoleMetronidazole15suppressed
Oxycodone HclOxycodone Hcl15suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid15suppressed
CefadroxilCefadroxil14suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl14suppressed
Ipratropium BromideIpratropium Bromide14suppressed
MethocarbamolMethocarbamol14suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic14suppressed
Verapamil ErVerapamil Hcl14suppressed
Benazepril HclBenazepril Hcl13suppressed
ClonidineClonidine13suppressed
Desipramine HclDesipramine Hcl13suppressed
KetoconazoleKetoconazole13suppressed
LubiprostoneLubiprostone13suppressed
Zolpidem TartrateZolpidem Tartrate13suppressed
Amiodarone HclAmiodarone Hcl12suppressed
CelecoxibCelecoxib12suppressed
MounjaroTirzepatide11suppressed

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