Healthcare provider profile · identity verified

William E Schwab, MD

Family Practice · MADISON, WI · NPI 1407817281

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
OmeprazoleOmeprazole31140
Levothyroxine SodiumLevothyroxine Sodium30938
FamotidineFamotidine20733
Atorvastatin CalciumAtorvastatin Calcium20038
Sertraline HclSertraline Hcl13217
Amlodipine BesylateAmlodipine Besylate12424
Metformin Hcl ErMetformin Hcl12322
Tamsulosin HclTamsulosin Hcl12119
LisinoprilLisinopril11821
Fluticasone PropionateFluticasone Propionate9331
Buspirone HclBuspirone Hcl9112
GabapentinGabapentin9015
Quetiapine FumarateQuetiapine Fumarate88suppressed
HydrochlorothiazideHydrochlorothiazide8618
BaclofenBaclofen83suppressed
Losartan PotassiumLosartan Potassium7014
LactuloseLactulose69suppressed
Trazodone HclTrazodone Hcl66suppressed
Rosuvastatin CalciumRosuvastatin Calcium6419
Fluoxetine HclFluoxetine Hcl60suppressed
AripiprazoleAripiprazole59suppressed
CarbamazepineCarbamazepine59suppressed
Olmesartan MedoxomilOlmesartan Medoxomil57suppressed
SimvastatinSimvastatin5713
Citalopram HbrCitalopram Hydrobromide56suppressed
KetoconazoleKetoconazole5619
LamotrigineLamotrigine51suppressed
CarvedilolCarvedilol50suppressed
EliquisApixaban4912
Metoprolol SuccinateMetoprolol Succinate49suppressed
FurosemideFurosemide46suppressed
ClonazepamClonazepam45suppressed
Oxybutynin ChlorideOxybutynin Chloride45suppressed
RisperidoneRisperidone45suppressed
Doxazosin MesylateDoxazosin Mesylate44suppressed
Divalproex Sodium ErDivalproex Sodium43suppressed
Warfarin SodiumWarfarin Sodium41suppressed
Zolpidem TartrateZolpidem Tartrate41suppressed
AtenololAtenolol39suppressed
LansoprazoleLansoprazole37suppressed
IbuprofenIbuprofen3311
JardianceEmpagliflozin32suppressed
MirtazapineMirtazapine32suppressed
PhenobarbitalPhenobarbital32suppressed
Potassium ChloridePotassium Chloride32suppressed
LevetiracetamLevetiracetam31suppressed
Metformin HclMetformin Hcl31suppressed
Pantoprazole SodiumPantoprazole Sodium31suppressed
Carbamazepine ErCarbamazepine30suppressed
JanuviaSitagliptin Phosphate29suppressed
Propranolol HclPropranolol Hcl29suppressed
Glipizide ErGlipizide28suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2815
CimetidineCimetidine26suppressed
Bupropion Hcl SrBupropion Hcl25suppressed
Bupropion XlBupropion Hcl25suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium25suppressed
FenofibrateFenofibrate,micronized24suppressed
LovastatinLovastatin24suppressed
NystatinNystatin2416
DiazepamDiazepam23suppressed
Metoprolol TartrateMetoprolol Tartrate23suppressed
Pravastatin SodiumPravastatin Sodium23suppressed
Amitriptyline HclAmitriptyline Hcl22suppressed
Enalapril MaleateEnalapril Maleate22suppressed
ErythromycinErythromycin Base21suppressed
OlanzapineOlanzapine21suppressed
Arnuity ElliptaFluticasone Furoate20suppressed
SpironolactoneSpironolactone20suppressed
Methylphenidate HclMethylphenidate Hcl19suppressed
Sumatriptan SuccinateSumatriptan Succinate19suppressed
LevocarnitineLevocarnitine18suppressed
NaproxenNaproxen18suppressed
AmoxicillinAmoxicillin17suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen17suppressed
OxcarbazepineOxcarbazepine17suppressed
Quinidine SulfateQuinidine Sulfate17suppressed
FinasterideFinasteride16suppressed
Galantamine HbrGalantamine Hbr16suppressed
Guanfacine Hcl ErGuanfacine Hcl16suppressed
Paroxetine HclParoxetine Hcl16suppressed
Terazosin HclTerazosin Hcl16suppressed
Venlafaxine Hcl ErVenlafaxine Hcl16suppressed
Fluticasone Propionate HfaFluticasone Propionate15suppressed
NitrofurantoinNitrofurantoin Macrocrystal15suppressed
Alendronate SodiumAlendronate Sodium14suppressed
ChlorthalidoneChlorthalidone14suppressed
Potassium Citrate ErPotassium Citrate14suppressed
PrimidonePrimidone14suppressed
Trospium ChlorideTrospium Chloride14suppressed
AcetazolamideAcetazolamide13suppressed
Azelastine HclAzelastine Hcl13suppressed
Cyproheptadine HclCyproheptadine Hcl13suppressed
Diltiazem 24hr ErDiltiazem Hcl13suppressed
Doxycycline HyclateDoxycycline Hyclate13suppressed
Metoclopramide HclMetoclopramide Hcl13suppressed
Minocycline HclMinocycline Hcl13suppressed
MounjaroTirzepatide13suppressed
RybelsusSemaglutide13suppressed
SalsalateSalsalate13suppressed
Tolterodine Tartrate ErTolterodine Tartrate13suppressed
Tramadol HclTramadol Hcl13suppressed
ZonisamideZonisamide13suppressed
Benazepril HclBenazepril Hcl12suppressed
Bromocriptine MesylateBromocriptine Mesylate12suppressed
Cevimeline HclCevimeline Hcl12suppressed
ConstuloseLactulose12suppressed
Montelukast SodiumMontelukast Sodium12suppressed
Oxycodone HclOxycodone Hcl12suppressed
Diclofenac SodiumDiclofenac Sodium11suppressed
GlipizideGlipizide11suppressed
Penicillin V PotassiumPenicillin V Potassium11suppressed
PregabalinPregabalin11suppressed
Propranolol Hcl ErPropranolol 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