Healthcare provider profile · identity verified

Brett A. Linzer, M.D.

Pediatric Medicine · OCONOMOWOC, WI · NPI 1083686653

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
Losartan PotassiumLosartan Potassium454127
Atorvastatin CalciumAtorvastatin Calcium35999
Levothyroxine SodiumLevothyroxine Sodium29663
LisinoprilLisinopril26174
Amlodipine BesylateAmlodipine Besylate20658
Metoprolol SuccinateMetoprolol Succinate20354
Metformin Hcl ErMetformin Hcl17647
SimvastatinSimvastatin16750
HydrochlorothiazideHydrochlorothiazide16453
GabapentinGabapentin15639
OmeprazoleOmeprazole15548
Tamsulosin HclTamsulosin Hcl13131
Albuterol Sulfate HfaAlbuterol Sulfate10939
Pantoprazole SodiumPantoprazole Sodium10724
Rosuvastatin CalciumRosuvastatin Calcium10331
Tramadol HclTramadol Hcl10319
Metformin HclMetformin Hcl9826
FurosemideFurosemide9638
Potassium ChloridePotassium Chloride9230
EliquisApixaban8928
Warfarin SodiumWarfarin Sodium8821
Pravastatin SodiumPravastatin Sodium8024
MeloxicamMeloxicam7522
CarvedilolCarvedilol7421
AllopurinolAllopurinol7222
Metoprolol TartrateMetoprolol Tartrate7120
AtenololAtenolol6715
Sertraline HclSertraline Hcl6118
ClopidogrelClopidogrel Bisulfate5916
LorazepamLorazepam59suppressed
Duloxetine HclDuloxetine Hcl5817
OzempicSemaglutide58suppressed
Fluticasone PropionateFluticasone Propionate4819
Montelukast SodiumMontelukast Sodium46suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen4411
SpironolactoneSpironolactone4418
Trazodone HclTrazodone Hcl4416
Doxazosin MesylateDoxazosin Mesylate4111
PrednisonePrednisone3615
Donepezil HclDonepezil Hcl35suppressed
JardianceEmpagliflozin3511
Diltiazem 24hr Er (Cd)Diltiazem Hcl34suppressed
FamotidineFamotidine34suppressed
Fluoxetine HclFluoxetine Hcl34suppressed
Glipizide ErGlipizide33suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid31suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide30suppressed
Oxybutynin Chloride ErOxybutynin Chloride30suppressed
Tizanidine HclTizanidine Hcl30suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3024
DiazepamDiazepam29suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol29suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog2911
Citalopram HbrCitalopram Hydrobromide26suppressed
Escitalopram OxalateEscitalopram Oxalate25suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog24suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide24suppressed
Zolpidem TartrateZolpidem Tartrate2413
Nifedipine ErNifedipine23suppressed
Divalproex SodiumDivalproex Sodium22suppressed
EzetimibeEzetimibe22suppressed
TopiramateTopiramate21suppressed
FinasterideFinasteride20suppressed
Paroxetine HclParoxetine Hcl20suppressed
Pioglitazone HclPioglitazone Hcl20suppressed
SynthroidLevothyroxine Sodium18suppressed
CelecoxibCelecoxib17suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)17suppressed
Oxycodone HclOxycodone Hcl17suppressed
Carbamazepine ErCarbamazepine16suppressed
Propranolol Hcl ErPropranolol Hcl16suppressed
FenofibrateFenofibrate15suppressed
LovastatinLovastatin15suppressed
SymbicortBudesonide/Formoterol Fumarate15suppressed
Venlafaxine Hcl ErVenlafaxine Hcl15suppressed
AmoxicillinAmoxicillin1413
Arnuity ElliptaFluticasone Furoate14suppressed
LantusInsulin Glargine,hum.Rec.Anlog14suppressed
Amiodarone HclAmiodarone Hcl13suppressed
CarbamazepineCarbamazepine13suppressed
Diclofenac SodiumDiclofenac Sodium13suppressed
DuleraMometasone/Formoterol13suppressed
GlimepirideGlimepiride13suppressed
ZonisamideZonisamide13suppressed
NystatinNystatin12suppressed
Prochlorperazine MaleateProchlorperazine Maleate12suppressed
Sumatriptan SuccinateSumatriptan Succinate12suppressed
ValsartanValsartan12suppressed
Bupropion XlBupropion Hcl11suppressed
ClonazepamClonazepam11suppressed
IrbesartanIrbesartan11suppressed
Olmesartan MedoxomilOlmesartan Medoxomil11suppressed
Quetiapine FumarateQuetiapine Fumarate11suppressed
Xtampza ErOxycodone Myristate11suppressed

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