Healthcare provider profile · identity verified

John H Schumann, MD

Internal Medicine · OKLAHOMA CITY, OK · NPI 1144383654

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 Calcium17252
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen15223
Albuterol Sulfate HfaAlbuterol Sulfate14544
Amlodipine BesylateAmlodipine Besylate13140
LisinoprilLisinopril11741
GabapentinGabapentin11536
Levothyroxine SodiumLevothyroxine Sodium8331
Trazodone HclTrazodone Hcl7117
ClopidogrelClopidogrel Bisulfate6017
Losartan PotassiumLosartan Potassium6022
FurosemideFurosemide5923
Fluticasone PropionateFluticasone Propionate5815
OmeprazoleOmeprazole5723
Rosuvastatin CalciumRosuvastatin Calcium5626
CarvedilolCarvedilol5317
Cyclobenzaprine HclCyclobenzaprine Hcl5313
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen53suppressed
Escitalopram OxalateEscitalopram Oxalate4817
Metformin HclMetformin Hcl4716
Pantoprazole SodiumPantoprazole Sodium4714
EliquisApixaban4616
Potassium ChloridePotassium Chloride4516
Metoprolol SuccinateMetoprolol Succinate4323
PregabalinPregabalin4315
ClonazepamClonazepam41suppressed
Sertraline HclSertraline Hcl4015
Bupropion XlBupropion Hcl39suppressed
MirtazapineMirtazapine35suppressed
IbuprofenIbuprofen34suppressed
OzempicSemaglutide33suppressed
LevetiracetamLevetiracetam30suppressed
BaclofenBaclofen29suppressed
Morphine Sulfate ErMorphine Sulfate29suppressed
Pravastatin SodiumPravastatin Sodium29suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter29suppressed
MeloxicamMeloxicam2812
AllopurinolAllopurinol25suppressed
GlipizideGlipizide25suppressed
JardianceEmpagliflozin25suppressed
Tamsulosin HclTamsulosin Hcl2511
Duloxetine HclDuloxetine Hcl24suppressed
Montelukast SodiumMontelukast Sodium24suppressed
MounjaroTirzepatide2411
Lantus SolostarInsulin Glargine,hum.Rec.Anlog2311
Metoprolol TartrateMetoprolol Tartrate2311
Buspirone HclBuspirone Hcl22suppressed
HydrochlorothiazideHydrochlorothiazide2212
Quetiapine FumarateQuetiapine Fumarate22suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide21suppressed
Metformin Hcl ErMetformin Hcl2113
Oxycodone HclOxycodone Hcl21suppressed
Tizanidine HclTizanidine Hcl20suppressed
FamotidineFamotidine19suppressed
AripiprazoleAripiprazole18suppressed
DiazepamDiazepam17suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate17suppressed
Combivent RespimatIpratropium/Albuterol Sulfate16suppressed
NitroglycerinNitroglycerin16suppressed
AlprazolamAlprazolam15suppressed
Novolog FlexpenInsulin Aspart15suppressed
PrednisonePrednisone15suppressed
SimvastatinSimvastatin15suppressed
Zolpidem TartrateZolpidem Tartrate15suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine14suppressed
Fluoxetine HclFluoxetine Hcl14suppressed
Hydralazine HclHydralazine Hcl14suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride14suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide14suppressed
SpironolactoneSpironolactone14suppressed
Carbamazepine ErCarbamazepine13suppressed
Divalproex Sodium ErDivalproex Sodium13suppressed
JanuviaSitagliptin Phosphate13suppressed
Tramadol HclTramadol Hcl13suppressed
XareltoRivaroxaban13suppressed
AzithromycinAzithromycin12suppressed
CelecoxibCelecoxib12suppressed
Citalopram HbrCitalopram Hydrobromide12suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium12suppressed
Ondansetron OdtOndansetron12suppressed
Oxybutynin Chloride ErOxybutynin Chloride12suppressed
Bisoprolol FumarateBisoprolol Fumarate11suppressed
ChlorthalidoneChlorthalidone11suppressed
MethimazoleMethimazole11suppressed
PaxlovidNirmatrelvir/Ritonavir11suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide11suppressed

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