Healthcare provider profile · identity verified

William Matthias Cusick, D.O.

Family Practice · OXNARD, CA · NPI 1992754113

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 Calcium353101
OmeprazoleOmeprazole23452
Metformin HclMetformin Hcl22551
LisinoprilLisinopril21752
Amlodipine BesylateAmlodipine Besylate18448
GabapentinGabapentin18248
Levothyroxine SodiumLevothyroxine Sodium17134
Losartan PotassiumLosartan Potassium14745
Rosuvastatin CalciumRosuvastatin Calcium13729
Alendronate SodiumAlendronate Sodium12524
Albuterol Sulfate HfaAlbuterol Sulfate11930
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen10818
Tamsulosin HclTamsulosin Hcl10724
Trazodone HclTrazodone Hcl10523
MeloxicamMeloxicam7518
Metoprolol SuccinateMetoprolol Succinate7320
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide7020
FamotidineFamotidine6715
IbuprofenIbuprofen6615
Tramadol HclTramadol Hcl6412
Pravastatin SodiumPravastatin Sodium6313
Metoprolol TartrateMetoprolol Tartrate5613
Sertraline HclSertraline Hcl5614
SimvastatinSimvastatin53suppressed
BaclofenBaclofen5015
PrednisonePrednisone4817
Triamcinolone AcetonideTriamcinolone Acetonide4826
Duloxetine HclDuloxetine Hcl4711
Fluticasone PropionateFluticasone Propionate4618
FurosemideFurosemide4614
JardianceEmpagliflozin4614
TrulicityDulaglutide46suppressed
NaproxenNaproxen45suppressed
Benazepril HclBenazepril Hcl4412
Cyclobenzaprine HclCyclobenzaprine Hcl44suppressed
HydrochlorothiazideHydrochlorothiazide4413
CarvedilolCarvedilol4311
Pantoprazole SodiumPantoprazole Sodium4311
RybelsusSemaglutide41suppressed
Montelukast SodiumMontelukast Sodium38suppressed
GlimepirideGlimepiride3713
Sumatriptan SuccinateSumatriptan Succinate37suppressed
JanuviaSitagliptin Phosphate36suppressed
Pioglitazone HclPioglitazone Hcl36suppressed
Acetaminophen-CodeineAcetaminophen With Codeine35suppressed
ChlorthalidoneChlorthalidone3513
Diclofenac SodiumDiclofenac Sodium3516
Escitalopram OxalateEscitalopram Oxalate34suppressed
AlprazolamAlprazolam32suppressed
Citalopram HbrCitalopram Hydrobromide32suppressed
ValsartanValsartan32suppressed
CelecoxibCelecoxib31suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril30suppressed
Metformin Hcl ErMetformin Hcl30suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog29suppressed
Zolpidem TartrateZolpidem Tartrate28suppressed
EliquisApixaban2712
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2611
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog25suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen25suppressed
Breo ElliptaFluticasone/Vilanterol24suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine24suppressed
Hydralazine HclHydralazine Hcl24suppressed
AllopurinolAllopurinol22suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic22suppressed
Nifedipine ErNifedipine22suppressed
Amitriptyline HclAmitriptyline Hcl21suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide21suppressed
LorazepamLorazepam2111
Oxycodone HclOxycodone Hcl20suppressed
ClopidogrelClopidogrel Bisulfate19suppressed
Hydroxyzine HclHydroxyzine Hcl19suppressed
AtenololAtenolol18suppressed
LidocaineLidocaine18suppressed
Ciprofloxacin HclCiprofloxacin Hcl1713
NovologInsulin Aspart17suppressed
Terbinafine HclTerbinafine Hcl17suppressed
TresibaInsulin Degludec17suppressed
Advair HfaFluticasone Propion/Salmeterol16suppressed
ClonazepamClonazepam16suppressed
Hydroxyzine PamoateHydroxyzine Pamoate16suppressed
Janumet XrSitagliptin Phos/Metformin Hcl16suppressed
KetoconazoleKetoconazole16suppressed
LactuloseLactulose16suppressed
Ventolin HfaAlbuterol Sulfate16suppressed
FluconazoleFluconazole1511
LantusInsulin Glargine,hum.Rec.Anlog15suppressed
MirtazapineMirtazapine15suppressed
SpironolactoneSpironolactone15suppressed
IrbesartanIrbesartan14suppressed
JanumetSitagliptin Phos/Metformin Hcl14suppressed
LevetiracetamLevetiracetam14suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter14suppressed
Bupropion XlBupropion Hcl13suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium13suppressed
Lidocaine Hcl ViscousLidocaine Hcl13suppressed
LovastatinLovastatin13suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid13suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr12suppressed
Bethanechol ChlorideBethanechol Chloride12suppressed
Doxycycline HyclateDoxycycline Hyclate12suppressed
Fluoxetine HclFluoxetine Hcl12suppressed
OdefseyEmtricitab/Rilpiviri/Tenof Ala12suppressed
Ibandronate SodiumIbandronate Sodium11suppressed
Spiriva RespimatTiotropium Bromide11suppressed
TelmisartanTelmisartan11suppressed
TopiramateTopiramate11suppressed
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