Healthcare provider profile · identity verified

Mark J Turek, M.D.

Family Practice · ORANGE CITY, IA · NPI 1063499259

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 Calcium34483
OmeprazoleOmeprazole19246
LisinoprilLisinopril15239
Amlodipine BesylateAmlodipine Besylate13029
Levothyroxine SodiumLevothyroxine Sodium13023
Metoprolol SuccinateMetoprolol Succinate13029
FurosemideFurosemide12628
GabapentinGabapentin12124
Sertraline HclSertraline Hcl11120
HydrochlorothiazideHydrochlorothiazide10128
LorazepamLorazepam10016
Rosuvastatin CalciumRosuvastatin Calcium10023
AllopurinolAllopurinol8117
Zolpidem TartrateZolpidem Tartrate7712
Losartan PotassiumLosartan Potassium7616
EliquisApixaban7511
SimvastatinSimvastatin7516
Tramadol HclTramadol Hcl7315
Warfarin SodiumWarfarin Sodium7014
Tamsulosin HclTamsulosin Hcl6817
Metoprolol TartrateMetoprolol Tartrate6517
Metformin Hcl ErMetformin Hcl6115
Potassium ChloridePotassium Chloride5713
Pantoprazole SodiumPantoprazole Sodium5412
Metformin HclMetformin Hcl51suppressed
Donepezil HclDonepezil Hcl50suppressed
FinasterideFinasteride4611
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen44suppressed
ClopidogrelClopidogrel Bisulfate42suppressed
CarvedilolCarvedilol39suppressed
OzempicSemaglutide37suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate36suppressed
AtenololAtenolol30suppressed
Duloxetine HclDuloxetine Hcl28suppressed
OlanzapineOlanzapine28suppressed
MeloxicamMeloxicam27suppressed
XareltoRivaroxaban26suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl2511
AbrysvoRsv Vacc, Pref A And Pref B/Pf2323
SpironolactoneSpironolactone23suppressed
TrulicityDulaglutide22suppressed
Alendronate SodiumAlendronate Sodium21suppressed
EzetimibeEzetimibe21suppressed
Triamcinolone AcetonideTriamcinolone Acetonide21suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl20suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip19suppressed
Amitriptyline HclAmitriptyline Hcl17suppressed
ChlorthalidoneChlorthalidone17suppressed
Trazodone HclTrazodone Hcl17suppressed
BaclofenBaclofen16suppressed
Doxazosin MesylateDoxazosin Mesylate16suppressed
Citalopram HbrCitalopram Hydrobromide15suppressed
GlipizideGlipizide15suppressed
CephalexinCephalexin1414
JantovenWarfarin Sodium14suppressed
Montelukast SodiumMontelukast Sodium14suppressed
Oxybutynin Chloride ErOxybutynin Chloride14suppressed
Sumatriptan SuccinateSumatriptan Succinate14suppressed
CarbamazepineCarbamazepine13suppressed
DigoxinDigoxin13suppressed
Enalapril MaleateEnalapril Maleate13suppressed
JardianceEmpagliflozin13suppressed
NitrofurantoinNitrofurantoin Macrocrystal13suppressed
PrednisonePrednisone13suppressed
Ropinirole HclRopinirole Hcl13suppressed
TopamaxTopiramate13suppressed
Armour ThyroidThyroid,pork12suppressed
AzithromycinAzithromycin12suppressed
Benazepril-HydrochlorothiazideBenazepril/Hydrochlorothiazide12suppressed
EstradiolEstradiol12suppressed
Fluticasone PropionateFluticasone Propionate12suppressed
GlimepirideGlimepiride12suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide12suppressed
Memantine HclMemantine Hcl12suppressed
Nortriptyline HclNortriptyline Hcl12suppressed
Paroxetine HclParoxetine Hcl12suppressed
Pioglitazone HclPioglitazone Hcl12suppressed
Quetiapine FumarateQuetiapine Fumarate12suppressed
ShingrixVaricella-Zoster Ge/As01b/Pf12suppressed
ValacyclovirValacyclovir Hcl12suppressed
Boostrix TdapDiphth,pertuss(Acell),tet Vac1111
FenofibrateFenofibrate Nanocrystallized11suppressed
Flecainide AcetateFlecainide Acetate11suppressed
Naratriptan HclNaratriptan Hcl11suppressed
TorsemideTorsemide11suppressed

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