Healthcare provider profile · identity verified

Stuart Lawrence Horwitz, MD

Gastroenterology · WASHINGTON, DC · NPI 1134180128

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
EliquisApixaban50244
Atorvastatin CalciumAtorvastatin Calcium48690
Amlodipine BesylateAmlodipine Besylate34763
GabapentinGabapentin32733
FurosemideFurosemide19533
JardianceEmpagliflozin19516
ClonidineClonidine18828
LisinoprilLisinopril18032
Hydralazine HclHydralazine Hcl16328
EzetimibeEzetimibe16229
Tramadol HclTramadol Hcl16019
OmeprazoleOmeprazole14429
Levothyroxine SodiumLevothyroxine Sodium13616
LevetiracetamLevetiracetam13414
Metformin HclMetformin Hcl13217
Trazodone HclTrazodone Hcl12525
MirtazapineMirtazapine11829
Sertraline HclSertraline Hcl11617
PregabalinPregabalin113suppressed
Metoprolol TartrateMetoprolol Tartrate11224
Divalproex SodiumDivalproex Sodium11118
Oxycodone HclOxycodone Hcl11118
Losartan PotassiumLosartan Potassium10321
Tamsulosin HclTamsulosin Hcl10022
CarvedilolCarvedilol9719
Nifedipine ErNifedipine9317
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog9215
LatanoprostLatanoprost9120
FamotidineFamotidine8919
Potassium ChloridePotassium Chloride8219
Metoprolol SuccinateMetoprolol Succinate8016
TradjentaLinagliptin80suppressed
BaclofenBaclofen7813
JanuviaSitagliptin Phosphate7211
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen70suppressed
Tresiba Flextouch U-100Insulin Degludec70suppressed
Donepezil HclDonepezil Hcl69suppressed
Clonidine HclClonidine Hcl68suppressed
AllopurinolAllopurinol62suppressed
Brimonidine TartrateBrimonidine Tartrate61suppressed
Oxybutynin Chloride ErOxybutynin Chloride60suppressed
ClopidogrelClopidogrel Bisulfate49suppressed
SpsSodium Polystyrene Sulfon/Sorb49suppressed
Fluticasone PropionateFluticasone Propionate48suppressed
Pantoprazole SodiumPantoprazole Sodium4615
Prenatal Vitamin Plus Low IronPnv,calcium 72/Iron/Folic Acid46suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)4313
Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat42suppressed
Montelukast SodiumMontelukast Sodium42suppressed
Fluoxetine HclFluoxetine Hcl40suppressed
HydrochlorothiazideHydrochlorothiazide40suppressed
SimvastatinSimvastatin38suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc3714
FiaspInsulin Aspart (Niacinamide)37suppressed
LorazepamLorazepam36suppressed
Ciprofloxacin HclCiprofloxacin Hcl3312
Megestrol AcetateMegestrol Acetate33suppressed
AnastrozoleAnastrozole32suppressed
Doxazosin MesylateDoxazosin Mesylate32suppressed
Triamcinolone AcetonideTriamcinolone Acetonide31suppressed
Breo ElliptaFluticasone/Vilanterol30suppressed
Escitalopram OxalateEscitalopram Oxalate30suppressed
Terazosin HclTerazosin Hcl29suppressed
Benztropine MesylateBenztropine Mesylate28suppressed
Diclofenac SodiumDiclofenac Sodium28suppressed
ColchicineColchicine27suppressed
HaloperidolHaloperidol27suppressed
Quetiapine FumarateQuetiapine Fumarate27suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2712
Alendronate SodiumAlendronate Sodium26suppressed
LacosamideLacosamide25suppressed
LamotrigineLamotrigine25suppressed
Lyumjev Kwikpen U-100Insulin Lispro-Aabc25suppressed
RisperidoneRisperidone25suppressed
Citalopram HbrCitalopram Hydrobromide24suppressed
JentaduetoLinagliptin/Metformin Hcl24suppressed
KonvomepOmeprazole/Sodium Bicarbonate24suppressed
Memantine HclMemantine Hcl24suppressed
MyrbetriqMirabegron24suppressed
Tizanidine HclTizanidine Hcl24suppressed
Duloxetine HclDuloxetine Hcl23suppressed
LovastatinLovastatin23suppressed
XareltoRivaroxaban23suppressed
BumetanideBumetanide22suppressed
Prednisolone AcetatePrednisolone Acetate21suppressed
Albuterol Sulfate HfaAlbuterol Sulfate20suppressed
Ventolin HfaAlbuterol Sulfate20suppressed
HydrocortisoneHydrocortisone19suppressed
Midodrine HclMidodrine Hcl19suppressed
OxcarbazepineOxcarbazepine19suppressed
SpironolactoneSpironolactone19suppressed
ConstuloseLactulose18suppressed
FinasterideFinasteride18suppressed
OlanzapineOlanzapine18suppressed
IbuprofenIbuprofen17suppressed
PrimidonePrimidone17suppressed
Albuterol SulfateAlbuterol Sulfate16suppressed
Amiodarone HclAmiodarone Hcl16suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin16suppressed
Glipizide ErGlipizide16suppressed
Humalog Kwikpen U-100Insulin Lispro16suppressed
Labetalol HclLabetalol Hcl16suppressed
Chlorhexidine GluconateChlorhexidine Gluconate15suppressed
DigoxinDigoxin15suppressed
Meclizine HclMeclizine Hcl15suppressed
Rosuvastatin CalciumRosuvastatin Calcium15suppressed
EntrestoSacubitril/Valsartan14suppressed
Ipratropium BromideIpratropium Bromide14suppressed
JanumetSitagliptin Phos/Metformin Hcl14suppressed
PradaxaDabigatran Etexilate Mesylate14suppressed
Valproic AcidValproic Acid (As Sodium Salt)14suppressed
AmantadineAmantadine Hcl13suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav13suppressed
CiclopiroxCiclopirox13suppressed
ClotrimazoleClotrimazole13suppressed
DaptomycinDaptomycin13suppressed
Lurasidone HclLurasidone Hcl13suppressed
NamzaricMemantine Hcl/Donepezil Hcl13suppressed
NovologInsulin Aspart13suppressed
RexultiBrexpiprazole13suppressed
Timolol MaleateTimolol Maleate13suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog13suppressed
ViokaceLipase/Protease/Amylase13suppressed
CarbamazepineCarbamazepine12suppressed
Cinacalcet HclCinacalcet Hcl12suppressed
GlycopyrrolateGlycopyrrolate12suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12suppressed
LoxapineLoxapine Succinate12suppressed
Novolog FlexpenInsulin Aspart12suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended12suppressed
RenvelaSevelamer Carbonate12suppressed
Atropine SulfateAtropine Sulfate11suppressed
BiktarvyBictegrav/Emtricit/Tenofov Ala11suppressed
BrilintaTicagrelor11suppressed
Buspirone HclBuspirone Hcl11suppressed
Dilt-XrDiltiazem Hcl11suppressed
Gvoke Hypopen 1-PackGlucagon11suppressed
Insulin Glargine-YfgnInsulin Glargine-Yfgn11suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog11suppressed
MetronidazoleMetronidazole11suppressed
Procto-Med HcHydrocortisone11suppressed
ScopolamineScopolamine11suppressed
TresibaInsulin Degludec11suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid11suppressed
VascepaIcosapent Ethyl11suppressed

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