Healthcare provider profile · identity verified

John Wah, M.D.

Internal Medicine · WESTMINSTER, MD · NPI 1265727580

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 Sodium29344
Atorvastatin CalciumAtorvastatin Calcium26455
EliquisApixaban24229
FurosemideFurosemide18433
Sertraline HclSertraline Hcl15222
Metoprolol TartrateMetoprolol Tartrate10822
Pantoprazole SodiumPantoprazole Sodium10532
Trazodone HclTrazodone Hcl10324
Losartan PotassiumLosartan Potassium9116
Tamsulosin HclTamsulosin Hcl8115
OmeprazoleOmeprazole7618
Quetiapine FumarateQuetiapine Fumarate7318
GabapentinGabapentin7121
Potassium ChloridePotassium Chloride7117
XareltoRivaroxaban71suppressed
Amlodipine BesylateAmlodipine Besylate6619
Metformin HclMetformin Hcl6611
MirtazapineMirtazapine6313
Montelukast SodiumMontelukast Sodium61suppressed
Ondansetron HclOndansetron Hcl5822
PrimidonePrimidone51suppressed
Oxycodone HclOxycodone Hcl5014
PrednisonePrednisone4812
CarvedilolCarvedilol45suppressed
LisinoprilLisinopril44suppressed
EntrestoSacubitril/Valsartan43suppressed
ClopidogrelClopidogrel Bisulfate4212
Divalproex SodiumDivalproex Sodium41suppressed
Memantine HclMemantine Hcl39suppressed
Escitalopram OxalateEscitalopram Oxalate3811
FamotidineFamotidine38suppressed
JanuviaSitagliptin Phosphate37suppressed
LevetiracetamLevetiracetam34suppressed
MyrbetriqMirabegron34suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog33suppressed
Labetalol HclLabetalol Hcl33suppressed
Donepezil HclDonepezil Hcl32suppressed
Buspirone HclBuspirone Hcl30suppressed
OlanzapineOlanzapine30suppressed
Fluoxetine HclFluoxetine Hcl27suppressed
RisperidoneRisperidone27suppressed
Propranolol HclPropranolol Hcl25suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol24suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter24suppressed
AllopurinolAllopurinol23suppressed
HydrochlorothiazideHydrochlorothiazide23suppressed
SantylCollagenase Clostridium Hist.23suppressed
Carbidopa-LevodopaCarbidopa/Levodopa22suppressed
Tolterodine TartrateTolterodine Tartrate22suppressed
Venlafaxine Hcl ErVenlafaxine Hcl22suppressed
Tizanidine HclTizanidine Hcl21suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2013
Citalopram HbrCitalopram Hydrobromide20suppressed
Doxycycline HyclateDoxycycline Hyclate2011
Duloxetine HclDuloxetine Hcl20suppressed
ErythromycinErythromycin Base20suppressed
GlipizideGlipizide20suppressed
FinasterideFinasteride19suppressed
CephalexinCephalexin1811
LatanoprostLatanoprost18suppressed
LorazepamLorazepam1812
NystatinNystatin18suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate1712
Novolog FlexpenInsulin Aspart17suppressed
Timolol MaleateTimolol Maleate17suppressed
FenofibrateFenofibrate16suppressed
Humalog Kwikpen U-100Insulin Lispro16suppressed
LidocaineLidocaine16suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog15suppressed
Metoprolol SuccinateMetoprolol Succinate1511
PregabalinPregabalin15suppressed
RivastigmineRivastigmine Tartrate15suppressed
Clonidine HclClonidine Hcl14suppressed
Diltiazem 24hr ErDiltiazem Hcl14suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl14suppressed
Oxybutynin Chloride ErOxybutynin Chloride14suppressed
OxycontinOxycodone Hcl14suppressed
Paroxetine HclParoxetine Hcl14suppressed
Pioglitazone HclPioglitazone Hcl14suppressed
Venlafaxine HclVenlafaxine Hcl14suppressed
Albuterol Sulfate HfaAlbuterol Sulfate13suppressed
CarbamazepineCarbamazepine13suppressed
Diclofenac SodiumDiclofenac Sodium13suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13suppressed
Memantine Hcl ErMemantine Hcl13suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide13suppressed
Pravastatin SodiumPravastatin Sodium13suppressed
Tramadol HclTramadol Hcl13suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr12suppressed
BudesonideBudesonide12suppressed
Diltiazem 12hr ErDiltiazem Hcl12suppressed
Fluticasone PropionateFluticasone Propionate12suppressed
Hydralazine HclHydralazine Hcl12suppressed
Insulin Aspart FlexpenInsulin Aspart12suppressed
Midodrine HclMidodrine Hcl12suppressed
SpironolactoneSpironolactone12suppressed
FentanylFentanyl11suppressed
JardianceEmpagliflozin11suppressed
Sodium Chloride0.9 % Sodium Chloride11suppressed
TopiramateTopiramate11suppressed
Zolpidem Tartrate ErZolpidem Tartrate11suppressed

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