Healthcare provider profile · identity verified

Nathaniel Stuart Besch, D.O.

Family Practice · WHITEWATER, WI · NPI 1487732533

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 Calcium616170
OmeprazoleOmeprazole37093
LisinoprilLisinopril33388
FurosemideFurosemide29670
Metoprolol SuccinateMetoprolol Succinate24673
Levothyroxine SodiumLevothyroxine Sodium23452
Losartan PotassiumLosartan Potassium21571
Tamsulosin HclTamsulosin Hcl20962
Metoprolol TartrateMetoprolol Tartrate20445
Amlodipine BesylateAmlodipine Besylate20366
EliquisApixaban20240
HydrochlorothiazideHydrochlorothiazide18956
Metformin HclMetformin Hcl18748
Rosuvastatin CalciumRosuvastatin Calcium17155
FamotidineFamotidine16428
Pantoprazole SodiumPantoprazole Sodium13925
Trazodone HclTrazodone Hcl12927
GabapentinGabapentin12429
Albuterol Sulfate HfaAlbuterol Sulfate12137
Fluticasone PropionateFluticasone Propionate11735
Metformin Hcl ErMetformin Hcl11226
CarvedilolCarvedilol11028
FinasterideFinasteride10831
SimvastatinSimvastatin10630
ClopidogrelClopidogrel Bisulfate10423
Montelukast SodiumMontelukast Sodium10424
Potassium ChloridePotassium Chloride9926
Sertraline HclSertraline Hcl9624
Warfarin SodiumWarfarin Sodium9328
SpironolactoneSpironolactone7920
Zolpidem TartrateZolpidem Tartrate7815
Duloxetine HclDuloxetine Hcl7718
AllopurinolAllopurinol7423
LorazepamLorazepam7122
Oxybutynin Chloride ErOxybutynin Chloride7022
Lantus SolostarInsulin Glargine,hum.Rec.Anlog6916
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen6126
SucralfateSucralfate53suppressed
OzempicSemaglutide5114
Pravastatin SodiumPravastatin Sodium51suppressed
PrednisonePrednisone4928
Ropinirole HclRopinirole Hcl44suppressed
XareltoRivaroxaban44suppressed
Escitalopram OxalateEscitalopram Oxalate4116
Donepezil HclDonepezil Hcl3914
Incruse ElliptaUmeclidinium Bromide39suppressed
AmoxicillinAmoxicillin3621
BaclofenBaclofen35suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl35suppressed
JardianceEmpagliflozin3511
Triamcinolone AcetonideTriamcinolone Acetonide3522
Citalopram HbrCitalopram Hydrobromide3411
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog33suppressed
Novolog FlexpenInsulin Aspart33suppressed
ChlorthalidoneChlorthalidone32suppressed
Bupropion XlBupropion Hcl3112
LovastatinLovastatin31suppressed
ClonazepamClonazepam29suppressed
Doxycycline HyclateDoxycycline Hyclate2921
Venlafaxine Hcl ErVenlafaxine Hcl29suppressed
Diclofenac SodiumDiclofenac Sodium2811
Doxazosin MesylateDoxazosin Mesylate28suppressed
Hydralazine HclHydralazine Hcl28suppressed
Oxycodone HclOxycodone Hcl2812
Pioglitazone HclPioglitazone Hcl27suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid27suppressed
AtenololAtenolol26suppressed
Benazepril HclBenazepril Hcl26suppressed
EzetimibeEzetimibe26suppressed
Memantine Hcl ErMemantine Hcl26suppressed
Paroxetine HclParoxetine Hcl26suppressed
AzithromycinAzithromycin2422
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate24suppressed
DigoxinDigoxin24suppressed
FenofibrateFenofibrate,micronized24suppressed
NitroglycerinNitroglycerin2419
SymbicortBudesonide/Formoterol Fumarate24suppressed
Fluoxetine HclFluoxetine Hcl23suppressed
Sumatriptan SuccinateSumatriptan Succinate23suppressed
Ventolin HfaAlbuterol Sulfate23suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl2215
GlimepirideGlimepiride22suppressed
GlipizideGlipizide22suppressed
NaproxenNaproxen22suppressed
Testosterone CypionateTestosterone Cypionate22suppressed
CephalexinCephalexin2113
Glipizide ErGlipizide21suppressed
Ipratropium BromideIpratropium Bromide21suppressed
MirtazapineMirtazapine21suppressed
Tramadol HclTramadol Hcl21suppressed
Divalproex SodiumDivalproex Sodium20suppressed
Humalog Kwikpen U-100Insulin Lispro20suppressed
JanuviaSitagliptin Phosphate20suppressed
LoperamideLoperamide Hcl20suppressed
Alendronate SodiumAlendronate Sodium19suppressed
IbuprofenIbuprofen19suppressed
Ondansetron HclOndansetron Hcl19suppressed
Breo ElliptaFluticasone/Vilanterol18suppressed
BumetanideBumetanide18suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide18suppressed
Tizanidine HclTizanidine Hcl18suppressed
Buspirone HclBuspirone Hcl17suppressed
Memantine HclMemantine Hcl17suppressed
Betamethasone DipropionateBetamethasone Dipropionate16suppressed
Meclizine HclMeclizine Hcl16suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1616
Oxybutynin ChlorideOxybutynin Chloride16suppressed
Arnuity ElliptaFluticasone Furoate15suppressed
ClotrimazoleClotrimazole15suppressed
TopiramateTopiramate15suppressed
CholestyramineCholestyramine (With Sugar)14suppressed
Ciprofloxacin HclCiprofloxacin Hcl1412
Diltiazem 24hr ErDiltiazem Hcl14suppressed
Diltiazem HclDiltiazem Hcl14suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium14suppressed
FenofibrateFenofibrate Nanocrystallized14suppressed
Humulin NInsulin Nph Human Isophane14suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate14suppressed
KetoconazoleKetoconazole14suppressed
ValacyclovirValacyclovir Hcl14suppressed
Acetaminophen-CodeineAcetaminophen With Codeine13suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1313
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc13suppressed
Clindamycin HclClindamycin Hcl13suppressed
Enalapril MaleateEnalapril Maleate13suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate13suppressed
Potassium Citrate ErPotassium Citrate13suppressed
Propranolol Hcl ErPropranolol Hcl13suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1312
TestosteroneTestosterone13suppressed
TradjentaLinagliptin13suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter13suppressed
TrulicityDulaglutide13suppressed
Terazosin HclTerazosin Hcl12suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic12suppressed
Carbidopa-LevodopaCarbidopa/Levodopa11suppressed
Desmopressin AcetateDesmopressin Acetate11suppressed
EszopicloneEszopiclone11suppressed
Fluticasone Propionate HfaFluticasone Propionate11suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol11suppressed
IrbesartanIrbesartan11suppressed
PrimidonePrimidone11suppressed
Propranolol HclPropranolol 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