Healthcare provider profile · identity verified

Mark Irwin Petersen, MD

Internal Medicine · TONGANOXIE, KS · NPI 1881647543

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
Levothyroxine SodiumLevothyroxine Sodium2086270
Atorvastatin CalciumAtorvastatin Calcium2034288
FurosemideFurosemide1610237
GabapentinGabapentin1409186
Amlodipine BesylateAmlodipine Besylate1353210
Potassium ChloridePotassium Chloride1302192
Sertraline HclSertraline Hcl1207168
Trazodone HclTrazodone Hcl1144180
Donepezil HclDonepezil Hcl1032153
EliquisApixaban987124
LisinoprilLisinopril981149
Tamsulosin HclTamsulosin Hcl957153
Losartan PotassiumLosartan Potassium948124
Pantoprazole SodiumPantoprazole Sodium891152
Buspirone HclBuspirone Hcl812118
Metformin HclMetformin Hcl787105
Quetiapine FumarateQuetiapine Fumarate779117
FamotidineFamotidine753134
Memantine HclMemantine Hcl717102
CarvedilolCarvedilol701108
MirtazapineMirtazapine695111
Divalproex SodiumDivalproex Sodium67492
Metoprolol SuccinateMetoprolol Succinate637100
Metoprolol TartrateMetoprolol Tartrate57798
LorazepamLorazepam552123
Tramadol HclTramadol Hcl545101
RisperidoneRisperidone53160
Duloxetine HclDuloxetine Hcl50073
Escitalopram OxalateEscitalopram Oxalate49894
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen48684
ClopidogrelClopidogrel Bisulfate47982
OmeprazoleOmeprazole46597
Rosuvastatin CalciumRosuvastatin Calcium45159
LevetiracetamLevetiracetam42057
HydrochlorothiazideHydrochlorothiazide41757
OlanzapineOlanzapine39649
Benztropine MesylateBenztropine Mesylate31835
Lantus SolostarInsulin Glargine,hum.Rec.Anlog31673
SimvastatinSimvastatin31545
BaclofenBaclofen31142
XareltoRivaroxaban30833
LatanoprostLatanoprost30754
SpironolactoneSpironolactone30154
Citalopram HbrCitalopram Hydrobromide28748
Oxycodone HclOxycodone Hcl28559
ClonazepamClonazepam28044
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc25857
HaloperidolHaloperidol25028
FinasterideFinasteride24946
Divalproex Sodium ErDivalproex Sodium24629
Diclofenac SodiumDiclofenac Sodium24172
Montelukast SodiumMontelukast Sodium23836
Fluoxetine HclFluoxetine Hcl23328
Fluvoxamine MaleateFluvoxamine Maleate23114
Hydroxyzine HclHydroxyzine Hcl23150
NystatinNystatin22997
Oxybutynin ChlorideOxybutynin Chloride22228
Methenamine HippurateMethenamine Hippurate22129
Ondansetron HclOndansetron Hcl217143
Warfarin SodiumWarfarin Sodium21719
JardianceEmpagliflozin21630
Fluticasone PropionateFluticasone Propionate21468
Hydralazine HclHydralazine Hcl21241
MeloxicamMeloxicam21238
Ropinirole HclRopinirole Hcl20833
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst196105
AllopurinolAllopurinol19435
AripiprazoleAripiprazole19231
Venlafaxine Hcl ErVenlafaxine Hcl18825
Carbidopa-LevodopaCarbidopa/Levodopa18639
MyrbetriqMirabegron18624
JanuviaSitagliptin Phosphate18413
Bupropion XlBupropion Hcl17935
Oxybutynin Chloride ErOxybutynin Chloride17022
Ciprofloxacin HclCiprofloxacin Hcl167125
PregabalinPregabalin16724
EzetimibeEzetimibe15923
ClozapineClozapine15714
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog15532
Pravastatin SodiumPravastatin Sodium15327
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate15243
MethotrexateMethotrexate Sodium149suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl14534
Amiodarone HclAmiodarone Hcl14325
PrednisonePrednisone14237
Triamcinolone AcetonideTriamcinolone Acetonide13525
BumetanideBumetanide13023
Haloperidol DecanoateHaloperidol Decanoate13012
Clonidine HclClonidine Hcl12823
LoperamideLoperamide Hcl12671
OxcarbazepineOxcarbazepine12612
Paroxetine HclParoxetine Hcl12424
IbuprofenIbuprofen12241
Alendronate SodiumAlendronate Sodium12022
Novolog FlexpenInsulin Aspart12030
Albuterol Sulfate HfaAlbuterol Sulfate11952
AtenololAtenolol11916
CephalexinCephalexin11962
GlipizideGlipizide11217
Midodrine HclMidodrine Hcl10827
AlprazolamAlprazolam10630
Diltiazem 24hr Er (Cd)Diltiazem Hcl10617
GlimepirideGlimepiride10413
Invega SustennaPaliperidone Palmitate103suppressed
Metformin Hcl ErMetformin Hcl10321
TradjentaLinagliptin103suppressed
DigoxinDigoxin10115
Lurasidone HclLurasidone Hcl101suppressed
Diltiazem HclDiltiazem Hcl9713
Ziprasidone HclZiprasidone Hcl9713
Diltiazem 24hr ErDiltiazem Hcl9613
Propranolol HclPropranolol Hcl9515
Insulin Lispro Kwikpen U-100Insulin Lispro9431
Doxycycline HyclateDoxycycline Hyclate9351
Venlafaxine HclVenlafaxine Hcl9314
SucralfateSucralfate9115
LamotrigineLamotrigine89suppressed
AzithromycinAzithromycin8881
TrulicityDulaglutide88suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim8749
Tolterodine Tartrate ErTolterodine Tartrate8514
Risperdal ConstaRisperidone Microspheres84suppressed
Solifenacin SuccinateSolifenacin Succinate8412
Timolol MaleateTimolol Maleate8317
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen82suppressed
Lithium CarbonateLithium Carbonate77suppressed
Paliperidone ErPaliperidone77suppressed
Morphine Sulfate ErMorphine Sulfate7511
Tizanidine HclTizanidine Hcl7420
KetoconazoleKetoconazole7224
TopiramateTopiramate7211
RivastigmineRivastigmine7114
LinzessLinaclotide6812
Insulin Aspart FlexpenInsulin Aspart6524
AmantadineAmantadine Hcl64suppressed
TorsemideTorsemide6312
Brimonidine TartrateBrimonidine Tartrate62suppressed
FarxigaDapagliflozin Propanediol62suppressed
CholestyramineCholestyramine (With Sugar)6014
Esomeprazole MagnesiumEsomeprazole Magnesium6015
LidocaineLidocaine5912
TrimethoprimTrimethoprim59suppressed
CarbamazepineCarbamazepine58suppressed
Dicyclomine HclDicyclomine Hcl5712
Humalog Kwikpen U-100Insulin Lispro5714
Isosorbide Mononitrate ErIsosorbide Mononitrate57suppressed
Prazosin HclPrazosin Hcl57suppressed
Olmesartan MedoxomilOlmesartan Medoxomil55suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl55suppressed
BudesonideBudesonide52suppressed
Dropsafe Pen NeedlePen Needle, Diabetic, Safety52suppressed
Doxazosin MesylateDoxazosin Mesylate51suppressed
FenofibrateFenofibrate Nanocrystallized51suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide50suppressed
RivastigmineRivastigmine Tartrate49suppressed
Bupropion Hcl SrBupropion Hcl47suppressed
CelecoxibCelecoxib47suppressed
Valproic AcidValproic Acid (As Sodium Salt)4711
Combivent RespimatIpratropium/Albuterol Sulfate46suppressed
Nebivolol HclNebivolol Hcl46suppressed
RexultiBrexpiprazole46suppressed
Nifedipine ErNifedipine45suppressed
Trihexyphenidyl HclTrihexyphenidyl Hcl45suppressed
Pioglitazone HclPioglitazone Hcl44suppressed
PrimidonePrimidone44suppressed
Fludrocortisone AcetateFludrocortisone Acetate43suppressed
Hydroxyzine PamoateHydroxyzine Pamoate4311
LactuloseLactulose43suppressed
NaproxenNaproxen43suppressed
Levemir FlexpenInsulin Detemir4217
Memantine Hcl ErMemantine Hcl42suppressed
Morphine SulfateMorphine Sulfate4220
Quetiapine Fumarate ErQuetiapine Fumarate42suppressed
Breo ElliptaFluticasone/Vilanterol41suppressed
FentanylFentanyl41suppressed
Enalapril MaleateEnalapril Maleate40suppressed
Amitriptyline HclAmitriptyline Hcl39suppressed
Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat39suppressed
Fluphenazine DecanoateFluphenazine Decanoate39suppressed
LacosamideLacosamide39suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter3913
Chlorpromazine HclChlorpromazine Hcl38suppressed
EntrestoSacubitril/Valsartan38suppressed
Lithium Carbonate ErLithium Carbonate37suppressed
LovastatinLovastatin37suppressed
Meclizine HclMeclizine Hcl3712
Fiasp FlextouchInsulin Aspart (Niacinamide)3616
Fluticasone-SalmeterolFluticasone Propion/Salmeterol36suppressed
Tresiba Flextouch U-100Insulin Degludec36suppressed
DofetilideDofetilide35suppressed
EstradiolEstradiol35suppressed
Olanzapine OdtOlanzapine35suppressed
ScopolamineScopolamine35suppressed
Ventolin HfaAlbuterol Sulfate3514
Haloperidol LactateHaloperidol Lactate3415
OxycontinOxycodone Hcl34suppressed
CalcitriolCalcitriol33suppressed
AmoxicillinAmoxicillin3226
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav3230
Brimonidine Tartrate-TimololBrimonidine Tartrate/Timolol32suppressed
Diltiazem 24hr Er (La)Diltiazem Hcl32suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide32suppressed
Ondansetron OdtOndansetron3226
Wixela InhubFluticasone Propion/Salmeterol32suppressed
Flecainide AcetateFlecainide Acetate31suppressed
Fluvoxamine Maleate ErFluvoxamine Maleate31suppressed
NyamycNystatin3116
SantylCollagenase Clostridium Hist.3115
Carbidopa-Levodopa ErCarbidopa/Levodopa30suppressed
Metoclopramide HclMetoclopramide Hcl30suppressed
MetolazoneMetolazone3015
PhenobarbitalPhenobarbital30suppressed
FluconazoleFluconazole2921
Spiriva RespimatTiotropium Bromide29suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid29suppressed
Zolpidem TartrateZolpidem Tartrate2912
Carbamazepine ErCarbamazepine28suppressed
ErythromycinErythromycin Base28suppressed
GemtesaVibegron28suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate28suppressed
Pilocarpine HclPilocarpine Hcl28suppressed
Propranolol Hcl ErPropranolol Hcl28suppressed
VraylarCariprazine Hcl28suppressed
Bupropion HclBupropion Hcl27suppressed
ClonidineClonidine27suppressed
FiaspInsulin Aspart (Niacinamide)27suppressed
MupirocinMupirocin2721
OzempicSemaglutide27suppressed
PremarinEstrogens, Conjugated27suppressed
ValacyclovirValacyclovir Hcl27suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr26suppressed
Benazepril HclBenazepril Hcl26suppressed
Fluphenazine HclFluphenazine Hcl26suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended26suppressed
Verapamil ErVerapamil Hcl26suppressed
Insulin Glargine-YfgnInsulin Glargine-Yfgn2511
Novolin N FlexpenInsulin Nph Human Isophane25suppressed
NuedextaDextromethorphan Hbr/Quinidine25suppressed
Terazosin HclTerazosin Hcl25suppressed
Admelog SolostarInsulin Lispro24suppressed
Incruse ElliptaUmeclidinium Bromide24suppressed
NystopNystatin2417
Aspirin-Dipyridamole ErAspirin/Dipyridamole23suppressed
Chlorhexidine GluconateChlorhexidine Gluconate23suppressed
Hydromorphone HclHydromorphone Hcl23suppressed
NitrofurantoinNitrofurantoin Macrocrystal2311
RytaryCarbidopa/Levodopa23suppressed
Glipizide ErGlipizide22suppressed
LumiganBimatoprost22suppressed
RestasisCyclosporine22suppressed
VascepaIcosapent Ethyl22suppressed
Calcium AcetateCalcium Acetate21suppressed
CefdinirCefdinir2120
Cholestyramine LightCholestyramine21suppressed
ColchicineColchicine21suppressed
DexamethasoneDexamethasone21suppressed
SotalolSotalol Hcl21suppressed
Colestipol HclColestipol Hcl20suppressed
FenofibrateFenofibrate,micronized20suppressed
ModafinilModafinil20suppressed
RocklatanNetarsudil Mesylat/Latanoprost20suppressed
Albuterol SulfateAlbuterol Sulfate1912
AnastrozoleAnastrozole19suppressed
DayvigoLemborexant19suppressed
Novofine AutocoverPen Needle, Diabetic, Safety19suppressed
Spiriva HandihalerTiotropium Bromide19suppressed
Tolterodine TartrateTolterodine Tartrate19suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog19suppressed
Bethanechol ChlorideBethanechol Chloride18suppressed
Folic AcidFolic Acid18suppressed
Klor-Con 10Potassium Chloride18suppressed
LevofloxacinLevofloxacin1812
MesalamineMesalamine18suppressed
MetronidazoleMetronidazole1812
MovantikNaloxegol Oxalate18suppressed
NitroglycerinNitroglycerin1816
Acetaminophen-CodeineAcetaminophen With Codeine17suppressed
Galantamine ErGalantamine Hbr17suppressed
Insulin LisproInsulin Lispro17suppressed
Lamotrigine ErLamotrigine17suppressed
NabumetoneNabumetone17suppressed
SymbicortBudesonide/Formoterol Fumarate17suppressed
Advair HfaFluticasone Propion/Salmeterol16suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate16suppressed
Donepezil Hcl OdtDonepezil Hcl16suppressed
HydrocortisoneHydrocortisone16suppressed
HydroxyureaHydroxyurea16suppressed
IrbesartanIrbesartan16suppressed
Methylphenidate HclMethylphenidate Hcl16suppressed
Prednisolone AcetatePrednisolone Acetate16suppressed
RamiprilRamipril16suppressed
Verapamil SrVerapamil Hcl16suppressed
ArexvyRsvpref3 Antigen/As01e/Pf1515
ZonisamideZonisamide15suppressed
Enoxaparin SodiumEnoxaparin Sodium14suppressed
Repatha SyringeEvolocumab14suppressed
RoflumilastRoflumilast14suppressed
SynthroidLevothyroxine Sodium14suppressed
TemazepamTemazepam14suppressed
Alfuzosin Hcl ErAlfuzosin Hcl13suppressed
Cardizem LaDiltiazem Hcl13suppressed
Dilt-XrDiltiazem Hcl13suppressed
Doxepin HclDoxepin Hcl13suppressed
EstaryllaNorgestimate-Ethinyl Estradiol13suppressed
EszopicloneEszopiclone13suppressed
Galantamine HbrGalantamine Hbr13suppressed
Ibandronate SodiumIbandronate Sodium13suppressed
Ipratropium BromideIpratropium Bromide13suppressed
Mycophenolate MofetilMycophenolate Mofetil13suppressed
Promethazine HclPromethazine Hcl13suppressed
Raloxifene HclRaloxifene Hcl13suppressed
SulfasalazineSulfasalazine13suppressed
ZenpepLipase/Protease/Amylase13suppressed
Abilify MaintenaAripiprazole12suppressed
AustedoDeutetrabenazine12suppressed
Clindamycin HclClindamycin Hcl12suppressed
CombiganBrimonidine Tartrate/Timolol12suppressed
Desmopressin AcetateDesmopressin Acetate12suppressed
FenofibrateFenofibrate12suppressed
MethocarbamolMethocarbamol12suppressed
MicafunginMicafungin Sodium12suppressed
Naltrexone HclNaltrexone Hcl12suppressed
Norethindrone AcetateNorethindrone Acetate12suppressed
Saxagliptin HclSaxagliptin Hcl12suppressed
Single Use SwabAlcohol Antiseptic Pads12suppressed
Trospium ChlorideTrospium Chloride12suppressed
Ulticare Safety Pen NeedlePen Needle, Diabetic, Safety12suppressed
BrinzolamideBrinzolamide11suppressed
Candesartan CilexetilCandesartan Cilexetil11suppressed
CimetidineCimetidine11suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip11suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine11suppressed
DisulfiramDisulfiram11suppressed
LevemirInsulin Detemir11suppressed
Medroxyprogesterone AcetateMedroxyprogesterone Acetate11suppressed
Nystatin-TriamcinoloneNystatin/Triamcinolone Acet11suppressed
PentoxifyllinePentoxifylline11suppressed
Stiolto RespimatTiotropium Br/Olodaterol Hcl11suppressed
Tiotropium BromideTiotropium Bromide11suppressed
TravoprostTravoprost11suppressed
Trospium Chloride ErTrospium Chloride11suppressed
Valproic AcidValproic Acid11suppressed

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