Healthcare provider profile · identity verified

Steven P Siewert, MD

Family Practice · COTTAGE GROVE, WI · NPI 1861442931

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 Calcium431123
LisinoprilLisinopril27469
SimvastatinSimvastatin17347
Oxycodone HclOxycodone Hcl14715
Levothyroxine SodiumLevothyroxine Sodium14631
Metoprolol SuccinateMetoprolol Succinate13839
Amlodipine BesylateAmlodipine Besylate13635
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen12326
OmeprazoleOmeprazole12239
Tamsulosin HclTamsulosin Hcl12134
Diclofenac SodiumDiclofenac Sodium12053
Losartan PotassiumLosartan Potassium11131
Rosuvastatin CalciumRosuvastatin Calcium10730
GabapentinGabapentin10520
HydrochlorothiazideHydrochlorothiazide10129
Fluticasone PropionateFluticasone Propionate8645
FurosemideFurosemide8518
Metoprolol TartrateMetoprolol Tartrate7622
Sertraline HclSertraline Hcl6122
EliquisApixaban60suppressed
Metformin Hcl ErMetformin Hcl5919
FamotidineFamotidine5818
Metformin HclMetformin Hcl5715
CarvedilolCarvedilol51suppressed
Fluoxetine HclFluoxetine Hcl5112
AllopurinolAllopurinol4812
Potassium ChloridePotassium Chloride4813
Trazodone HclTrazodone Hcl4814
Albuterol Sulfate HfaAlbuterol Sulfate4627
Citalopram HbrCitalopram Hydrobromide4511
OzempicSemaglutide42suppressed
LorazepamLorazepam40suppressed
Enalapril MaleateEnalapril Maleate37suppressed
AtenololAtenolol36suppressed
CarisoprodolCarisoprodol36suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid35suppressed
AlprazolamAlprazolam3411
Warfarin SodiumWarfarin Sodium33suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog31suppressed
Pantoprazole SodiumPantoprazole Sodium31suppressed
XareltoRivaroxaban30suppressed
Benazepril HclBenazepril Hcl29suppressed
JardianceEmpagliflozin29suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen29suppressed
AzithromycinAzithromycin2724
Bupropion Hcl SrBupropion Hcl27suppressed
LovastatinLovastatin27suppressed
Doxazosin MesylateDoxazosin Mesylate26suppressed
ClopidogrelClopidogrel Bisulfate25suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2516
Buspirone HclBuspirone Hcl24suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl24suppressed
OxycontinOxycodone Hcl24suppressed
FentanylFentanyl23suppressed
MeloxicamMeloxicam23suppressed
Nifedipine ErNifedipine23suppressed
BaclofenBaclofen22suppressed
FinasterideFinasteride22suppressed
Quetiapine FumarateQuetiapine Fumarate22suppressed
Bupropion XlBupropion Hcl21suppressed
EzetimibeEzetimibe21suppressed
Azelastine HclAzelastine Hcl20suppressed
Hydralazine HclHydralazine Hcl20suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate19suppressed
NitroglycerinNitroglycerin1916
FenofibrateFenofibrate Nanocrystallized18suppressed
Venlafaxine Hcl ErVenlafaxine Hcl18suppressed
Alendronate SodiumAlendronate Sodium17suppressed
FenofibrateFenofibrate17suppressed
GlipizideGlipizide17suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide17suppressed
PrednisonePrednisone1713
Oxybutynin ChlorideOxybutynin Chloride16suppressed
Ventolin HfaAlbuterol Sulfate16suppressed
AmoxicillinAmoxicillin1511
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine15suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol15suppressed
Ondansetron OdtOndansetron15suppressed
Amiodarone HclAmiodarone Hcl14suppressed
CephalexinCephalexin1412
HydrocortisoneHydrocortisone14suppressed
LoperamideLoperamide Hcl14suppressed
MyrbetriqMirabegron14suppressed
Donepezil HclDonepezil Hcl13suppressed
Hydroxyzine HclHydroxyzine Hcl13suppressed
LidocaineLidocaine13suppressed
Sumatriptan SuccinateSumatriptan Succinate13suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim12suppressed
Testosterone CypionateTestosterone Cypionate12suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter12suppressed
Wixela InhubFluticasone Propion/Salmeterol12suppressed
Advair DiskusFluticasone Propion/Salmeterol11suppressed
Carbidopa-LevodopaCarbidopa/Levodopa11suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl11suppressed
Humulin 70-30Insulin Nph Hum/Reg Insulin Hm11suppressed
Janumet XrSitagliptin Phos/Metformin 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