Healthcare provider profile · identity verified

Gary M. Koritzinsky, M.D.

Internal Medicine · WASHINGTON, DC · NPI 1366472128

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 Calcium31593
Rosuvastatin CalciumRosuvastatin Calcium18149
Amlodipine BesylateAmlodipine Besylate12841
EzetimibeEzetimibe12736
Tamsulosin HclTamsulosin Hcl9431
Metoprolol SuccinateMetoprolol Succinate7126
EliquisApixaban7015
Levothyroxine SodiumLevothyroxine Sodium6218
CelecoxibCelecoxib5715
GabapentinGabapentin5220
SynthroidLevothyroxine Sodium5014
AllopurinolAllopurinol4911
ValsartanValsartan4612
Trazodone HclTrazodone Hcl4111
FamotidineFamotidine4014
AzithromycinAzithromycin3932
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid3916
Losartan PotassiumLosartan Potassium38suppressed
Doxycycline HyclateDoxycycline Hyclate3732
OmeprazoleOmeprazole3712
IrbesartanIrbesartan36suppressed
LisinoprilLisinopril36suppressed
Bupropion Hcl SrBupropion Hcl34suppressed
Duloxetine HclDuloxetine Hcl3412
Escitalopram OxalateEscitalopram Oxalate33suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide33suppressed
CarvedilolCarvedilol32suppressed
Zolpidem TartrateZolpidem Tartrate3214
Alfuzosin Hcl ErAlfuzosin Hcl29suppressed
Metformin Hcl ErMetformin Hcl29suppressed
Pantoprazole SodiumPantoprazole Sodium28suppressed
RamiprilRamipril28suppressed
Bupropion XlBupropion Hcl25suppressed
Candesartan CilexetilCandesartan Cilexetil25suppressed
ClonazepamClonazepam25suppressed
FinasterideFinasteride25suppressed
MethylprednisoloneMethylprednisolone2518
Midodrine HclMidodrine Hcl25suppressed
Doxepin HclDoxepin Hcl23suppressed
Liothyronine SodiumLiothyronine Sodium23suppressed
MeloxicamMeloxicam23suppressed
RybelsusSemaglutide22suppressed
ClopidogrelClopidogrel Bisulfate20suppressed
JanuviaSitagliptin Phosphate19suppressed
Fludrocortisone AcetateFludrocortisone Acetate18suppressed
LorazepamLorazepam18suppressed
PrednisonePrednisone1813
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1712
HydrochlorothiazideHydrochlorothiazide17suppressed
PaxlovidNirmatrelvir/Ritonavir1717
ZaleplonZaleplon17suppressed
AlprazolamAlprazolam15suppressed
CefuroximeCefuroxime Axetil1512
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide15suppressed
TelmisartanTelmisartan15suppressed
ValacyclovirValacyclovir Hcl15suppressed
CefdinirCefdinir1411
ColchicineColchicine14suppressed
EstradiolEstradiol14suppressed
JanumetSitagliptin Phos/Metformin Hcl14suppressed
Pravastatin SodiumPravastatin Sodium14suppressed
Repatha SureclickEvolocumab14suppressed
SimvastatinSimvastatin14suppressed
Albuterol Sulfate HfaAlbuterol Sulfate13suppressed
Citalopram HbrCitalopram Hydrobromide13suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin13suppressed
Montelukast SodiumMontelukast Sodium13suppressed
Wixela InhubFluticasone Propion/Salmeterol13suppressed
Azelastine-FluticasoneAzelastine/Fluticasone12suppressed
Ipratropium BromideIpratropium Bromide12suppressed
JardianceEmpagliflozin12suppressed
Methenamine HippurateMethenamine Hippurate12suppressed
Olmesartan MedoxomilOlmesartan Medoxomil12suppressed
TadalafilTadalafil12suppressed
Tramadol HclTramadol Hcl12suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide12suppressed
Estradiol (Once Weekly)Estradiol11suppressed
PregabalinPregabalin11suppressed
Verapamil ErVerapamil Hcl11suppressed

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