Healthcare provider profile · identity verified

Mark John Dehnel

Physician Assistant · DENMARK, WI · NPI 1578548947

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 Calcium566151
LisinoprilLisinopril345105
Amlodipine BesylateAmlodipine Besylate29690
Rosuvastatin CalciumRosuvastatin Calcium23769
Metoprolol SuccinateMetoprolol Succinate23569
OmeprazoleOmeprazole19662
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13216
HydrochlorothiazideHydrochlorothiazide12136
Levothyroxine SodiumLevothyroxine Sodium11929
Metformin Hcl ErMetformin Hcl11934
Losartan PotassiumLosartan Potassium10936
Pantoprazole SodiumPantoprazole Sodium10827
PrednisonePrednisone10468
FurosemideFurosemide9637
Metformin HclMetformin Hcl9527
AllopurinolAllopurinol9227
Lantus SolostarInsulin Glargine,hum.Rec.Anlog9220
EliquisApixaban8619
Tamsulosin HclTamsulosin Hcl8631
Albuterol Sulfate HfaAlbuterol Sulfate8234
Trazodone HclTrazodone Hcl7927
OzempicSemaglutide7213
GabapentinGabapentin7129
Metoprolol TartrateMetoprolol Tartrate7122
Potassium ChloridePotassium Chloride7123
JardianceEmpagliflozin6913
ValsartanValsartan6522
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5718
Sertraline HclSertraline Hcl5714
Glipizide ErGlipizide5519
ClopidogrelClopidogrel Bisulfate5215
TrulicityDulaglutide52suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl4612
Fluticasone-SalmeterolFluticasone Propion/Salmeterol4512
Warfarin SodiumWarfarin Sodium4212
Alendronate SodiumAlendronate Sodium4115
Montelukast SodiumMontelukast Sodium3911
CarvedilolCarvedilol3715
Pioglitazone HclPioglitazone Hcl37suppressed
Fluticasone PropionateFluticasone Propionate3617
Triamcinolone AcetonideTriamcinolone Acetonide3529
EzetimibeEzetimibe3312
LorazepamLorazepam32suppressed
PregabalinPregabalin32suppressed
Doxazosin MesylateDoxazosin Mesylate31suppressed
FamotidineFamotidine3112
AlprazolamAlprazolam30suppressed
CelecoxibCelecoxib30suppressed
Donepezil HclDonepezil Hcl30suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2828
Acetaminophen-CodeineAcetaminophen With Codeine26suppressed
Citalopram HbrCitalopram Hydrobromide26suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc25suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide25suppressed
Venlafaxine Hcl ErVenlafaxine Hcl24suppressed
Diclofenac SodiumDiclofenac Sodium23suppressed
Oxycodone HclOxycodone Hcl22suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2121
Buspirone HclBuspirone Hcl20suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine20suppressed
Duloxetine HclDuloxetine Hcl20suppressed
Escitalopram OxalateEscitalopram Oxalate20suppressed
Zolpidem TartrateZolpidem Tartrate20suppressed
AtenololAtenolol19suppressed
Bupropion Hcl SrBupropion Hcl19suppressed
Fluoxetine HclFluoxetine Hcl18suppressed
SimvastatinSimvastatin18suppressed
Tramadol HclTramadol Hcl18suppressed
AmoxicillinAmoxicillin1711
ChlorthalidoneChlorthalidone17suppressed
Novolog FlexpenInsulin Aspart17suppressed
Pravastatin SodiumPravastatin Sodium17suppressed
Quetiapine FumarateQuetiapine Fumarate17suppressed
SynthroidLevothyroxine Sodium17suppressed
CephalexinCephalexin1615
DiazepamDiazepam16suppressed
Dicyclomine HclDicyclomine Hcl16suppressed
Doxycycline MonohydrateDoxycycline Monohydrate1613
Pramipexole DihydrochloridePramipexole Di-Hcl16suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog16suppressed
Combivent RespimatIpratropium/Albuterol Sulfate15suppressed
ForteoTeriparatide15suppressed
Ropinirole HclRopinirole Hcl15suppressed
Sildenafil CitrateSildenafil Citrate15suppressed
SpironolactoneSpironolactone15suppressed
ClonazepamClonazepam14suppressed
JanuviaSitagliptin Phosphate14suppressed
Liothyronine SodiumLiothyronine Sodium14suppressed
Terazosin HclTerazosin Hcl14suppressed
Incruse ElliptaUmeclidinium Bromide13suppressed
MeloxicamMeloxicam13suppressed
Unifine PentipsPen Needle, Diabetic13suppressed
AzithromycinAzithromycin1212
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog12suppressed
Oxybutynin ChlorideOxybutynin Chloride12suppressed
Solifenacin SuccinateSolifenacin Succinate12suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic12suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide12suppressed
NitroglycerinNitroglycerin11suppressed
Sumatriptan SuccinateSumatriptan Succinate11suppressed
Tizanidine HclTizanidine Hcl11suppressed
Wixela InhubFluticasone Propion/Salmeterol11suppressed

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