Healthcare provider profile · identity verified

Paul J. Hsiang, MD

Family Practice · RIVERSIDE, CA · NPI 1841367679

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 Calcium647239
LisinoprilLisinopril333107
Amlodipine BesylateAmlodipine Besylate313107
Levothyroxine SodiumLevothyroxine Sodium23875
Losartan PotassiumLosartan Potassium22077
Metformin Hcl ErMetformin Hcl20471
Metformin HclMetformin Hcl19887
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen19332
Metoprolol TartrateMetoprolol Tartrate18263
SimvastatinSimvastatin16353
Glipizide ErGlipizide15953
Albuterol Sulfate HfaAlbuterol Sulfate14988
AtenololAtenolol14748
Pantoprazole SodiumPantoprazole Sodium14550
GabapentinGabapentin14051
Rosuvastatin CalciumRosuvastatin Calcium13844
PradaxaDabigatran Etexilate Mesylate12930
Potassium ChloridePotassium Chloride12440
OzempicSemaglutide11921
FurosemideFurosemide11440
HydrochlorothiazideHydrochlorothiazide11141
Hydralazine HclHydralazine Hcl10846
OmeprazoleOmeprazole9937
Azelastine HclAzelastine Hcl9848
Terazosin HclTerazosin Hcl9831
FamotidineFamotidine9648
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide9635
PrednisonePrednisone8768
Trazodone HclTrazodone Hcl8727
LactuloseLactulose8524
AllopurinolAllopurinol8127
Tamsulosin HclTamsulosin Hcl7739
Triamcinolone AcetonideTriamcinolone Acetonide7636
AzithromycinAzithromycin7161
BreynaBudesonide/Formoterol Fumarate6831
Alendronate SodiumAlendronate Sodium6521
CephalexinCephalexin6257
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid5919
Spiriva RespimatTiotropium Bromide58suppressed
CarvedilolCarvedilol5518
ClopidogrelClopidogrel Bisulfate5520
Wixela InhubFluticasone Propion/Salmeterol5430
EliquisApixaban5214
GlipizideGlipizide5122
Bisoprolol FumarateBisoprolol Fumarate4717
FinasterideFinasteride4414
Ondansetron OdtOndansetron43suppressed
NaproxenNaproxen4121
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen40suppressed
MeloxicamMeloxicam3821
Nano 2nd Gen Pen NeedlePen Needle, Diabetic3719
Humulin N KwikpenInsulin Nph Human Isophane3413
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml3411
Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha3330
Humulin NInsulin Nph Human Isophane3213
Montelukast SodiumMontelukast Sodium30suppressed
JardianceEmpagliflozin29suppressed
Pravastatin SodiumPravastatin Sodium29suppressed
ColchicineColchicine2713
Isosorbide Mononitrate ErIsosorbide Mononitrate27suppressed
Morphine Sulfate ErMorphine Sulfate26suppressed
CiclopiroxCiclopirox25suppressed
IbuprofenIbuprofen2513
Propranolol HclPropranolol Hcl24suppressed
SpironolactoneSpironolactone2411
ArexvyRsvpref3 Antigen/As01e/Pf2121
HydrocortisoneHydrocortisone21suppressed
Insulin Glargine-YfgnInsulin Glargine-Yfgn21suppressed
Sumatriptan SuccinateSumatriptan Succinate21suppressed
AmoxicillinAmoxicillin1916
Benazepril HclBenazepril Hcl19suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide19suppressed
NitroglycerinNitroglycerin19suppressed
Ciprofloxacin HclCiprofloxacin Hcl1816
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf1717
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1716
Nystatin-TriamcinoloneNystatin/Triamcinolone Acet1711
Veo Insulin SyringeSyringe And Needle,insulin,1ml17suppressed
RizatriptanRizatriptan Benzoate16suppressed
Clindamycin HclClindamycin Hcl1515
LantusInsulin Glargine,hum.Rec.Anlog15suppressed
SucralfateSucralfate1511
Donepezil HclDonepezil Hcl14suppressed
AcyclovirAcyclovir13suppressed
Ibandronate SodiumIbandronate Sodium13suppressed
Tramadol HclTramadol Hcl13suppressed
Buspirone HclBuspirone Hcl12suppressed
Dabigatran EtexilateDabigatran Etexilate Mesylate1212
EzetimibeEzetimibe12suppressed
Sertraline HclSertraline Hcl12suppressed
TradjentaLinagliptin12suppressed
AlprazolamAlprazolam11suppressed
Clonidine HclClonidine Hcl11suppressed
FenofibrateFenofibrate11suppressed
Fluticasone PropionateFluticasone Propionate11suppressed
LovastatinLovastatin11suppressed
Metoprolol SuccinateMetoprolol Succinate11suppressed

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