Healthcare provider profile · identity verified

Joseph Leung, MD

Internal Medicine · SAN FRANCISCO, CA · NPI 1154409787

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 Calcium1314397
Losartan PotassiumLosartan Potassium767225
Amlodipine BesylateAmlodipine Besylate581174
Tamsulosin HclTamsulosin Hcl332113
LisinoprilLisinopril27687
FamotidineFamotidine275119
Metformin HclMetformin Hcl26779
Metoprolol SuccinateMetoprolol Succinate22778
GlipizideGlipizide21366
AtenololAtenolol21078
Fluticasone PropionateFluticasone Propionate203100
Levothyroxine SodiumLevothyroxine Sodium19758
SimvastatinSimvastatin19758
Alendronate SodiumAlendronate Sodium19358
Terazosin HclTerazosin Hcl18057
OmeprazoleOmeprazole17272
Metoprolol TartrateMetoprolol Tartrate16853
GabapentinGabapentin16576
JardianceEmpagliflozin16050
Triamcinolone AcetonideTriamcinolone Acetonide15188
Metformin Hcl ErMetformin Hcl13948
FurosemideFurosemide12042
FluocinonideFluocinonide11975
Pantoprazole SodiumPantoprazole Sodium11138
AllopurinolAllopurinol9936
HydrochlorothiazideHydrochlorothiazide9732
LovastatinLovastatin9726
ColchicineColchicine9149
FinasterideFinasteride9030
AlvescoCiclesonide8933
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide8123
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide7523
Trazodone HclTrazodone Hcl7440
HydrocortisoneHydrocortisone6443
Clobetasol PropionateClobetasol Propionate6135
ClopidogrelClopidogrel Bisulfate6118
Donepezil HclDonepezil Hcl6122
Albuterol Sulfate HfaAlbuterol Sulfate6032
Ciprofloxacin HclCiprofloxacin Hcl5950
PradaxaDabigatran Etexilate Mesylate5916
Hydralazine HclHydralazine Hcl5014
AzithromycinAzithromycin4845
Citalopram HbrCitalopram Hydrobromide4616
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf4545
Isosorbide Mononitrate ErIsosorbide Mononitrate4411
MupirocinMupirocin4430
LactuloseLactulose4317
Trospium ChlorideTrospium Chloride4219
LorazepamLorazepam4113
Wixela InhubFluticasone Propion/Salmeterol38suppressed
Glipizide ErGlipizide3713
Potassium ChloridePotassium Chloride37suppressed
Montelukast SodiumMontelukast Sodium3614
Zolpidem TartrateZolpidem Tartrate36suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen3312
NabumetoneNabumetone3320
PaxlovidNirmatrelvir/Ritonavir3332
Duloxetine HclDuloxetine Hcl3120
FenofibrateFenofibrate31suppressed
Betamethasone Diprop AugmentedBetamethasone/Propylene Glyc3012
Pioglitazone HclPioglitazone Hcl30suppressed
CarvedilolCarvedilol28suppressed
EntecavirEntecavir28suppressed
TemazepamTemazepam28suppressed
Pravastatin SodiumPravastatin Sodium27suppressed
Fluoxetine HclFluoxetine Hcl26suppressed
Humulin NInsulin Nph Human Isophane26suppressed
MirtazapineMirtazapine2612
Diltiazem 24hr Er (Cd)Diltiazem Hcl25suppressed
EliquisApixaban25suppressed
Memantine HclMemantine Hcl23suppressed
PrednisonePrednisone2320
Neomycin-Polymyxin-HcNeomycin/Polymyxin B/Hydrocort2221
TacrolimusTacrolimus2213
Warfarin SodiumWarfarin Sodium22suppressed
Acetaminophen-CodeineAcetaminophen With Codeine2113
AmoxicillinAmoxicillin2118
Escitalopram OxalateEscitalopram Oxalate2112
Propranolol HclPropranolol Hcl20suppressed
Bupropion XlBupropion Hcl19suppressed
Doxycycline MonohydrateDoxycycline Monohydrate1916
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml18suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1716
MeloxicamMeloxicam17suppressed
Spiriva RespimatTiotropium Bromide16suppressed
TorsemideTorsemide16suppressed
Rosuvastatin CalciumRosuvastatin Calcium15suppressed
DigoxinDigoxin14suppressed
LatanoprostLatanoprost14suppressed
Methylphenidate HclMethylphenidate Hcl14suppressed
SpironolactoneSpironolactone14suppressed
Verapamil ErVerapamil Hcl13suppressed
Enbrel SureclickEtanercept12suppressed
EzetimibeEzetimibe12suppressed
GlimepirideGlimepiride12suppressed
NaproxenNaproxen12suppressed
Sumatriptan SuccinateSumatriptan Succinate12suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic12suppressed
Venlafaxine Hcl ErVenlafaxine Hcl12suppressed
AcyclovirAcyclovir11suppressed
BreynaBudesonide/Formoterol Fumarate11suppressed
CephalexinCephalexin11suppressed
Humulin N KwikpenInsulin Nph Human Isophane11suppressed

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