Healthcare provider profile · identity verified

Thushari Wijesinghe, MD

Family Practice · OXNARD, CA · NPI 1164080214

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 Calcium13168
Losartan PotassiumLosartan Potassium12448
Amlodipine BesylateAmlodipine Besylate11355
LisinoprilLisinopril9046
Metformin HclMetformin Hcl6535
Rosuvastatin CalciumRosuvastatin Calcium6334
Levothyroxine SodiumLevothyroxine Sodium5124
SimvastatinSimvastatin5115
Albuterol Sulfate HfaAlbuterol Sulfate4942
GabapentinGabapentin4826
Pantoprazole SodiumPantoprazole Sodium4720
Potassium ChloridePotassium Chloride4616
HydrochlorothiazideHydrochlorothiazide4015
OmeprazoleOmeprazole3923
Alendronate SodiumAlendronate Sodium3117
MeloxicamMeloxicam3116
Metoprolol TartrateMetoprolol Tartrate3114
Sertraline HclSertraline Hcl2914
BaclofenBaclofen28suppressed
GlipizideGlipizide2415
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2221
JardianceEmpagliflozin21suppressed
PradaxaDabigatran Etexilate Mesylate21suppressed
IbuprofenIbuprofen2017
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf1919
Ondansetron OdtOndansetron18suppressed
Trazodone HclTrazodone Hcl1816
Duloxetine HclDuloxetine Hcl17suppressed
AllopurinolAllopurinol16suppressed
Metformin Hcl ErMetformin Hcl16suppressed
AtenololAtenolol15suppressed
Bisoprolol FumarateBisoprolol Fumarate14suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide14suppressed
Terazosin HclTerazosin Hcl1411
CarvedilolCarvedilol13suppressed
Wixela InhubFluticasone Propion/Salmeterol13suppressed
ArexvyRsvpref3 Antigen/As01e/Pf1212
Azelastine HclAzelastine Hcl12suppressed
PrednisonePrednisone12suppressed
Bupropion XlBupropion Hcl11suppressed
CephalexinCephalexin11suppressed
Fluoxetine HclFluoxetine Hcl11suppressed
FurosemideFurosemide11suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen1111
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide11suppressed
Pioglitazone HclPioglitazone Hcl11suppressed
SpironolactoneSpironolactone11suppressed

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