Healthcare provider profile · identity verified

Michael Hisashi Nagoshi, M.D.

Internal Medicine · HONOLULU, HI · NPI 1407945116

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 Calcium433168
Amlodipine BesylateAmlodipine Besylate350129
LisinoprilLisinopril289107
Losartan PotassiumLosartan Potassium18365
Metformin HclMetformin Hcl15357
SimvastatinSimvastatin12745
OmeprazoleOmeprazole10338
AllopurinolAllopurinol8931
Levothyroxine SodiumLevothyroxine Sodium8935
HydrochlorothiazideHydrochlorothiazide8231
Metoprolol SuccinateMetoprolol Succinate8230
Metformin Hcl ErMetformin Hcl6621
LovastatinLovastatin5217
JanuviaSitagliptin Phosphate4813
GlimepirideGlimepiride4615
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide4615
GlipizideGlipizide3915
Tamsulosin HclTamsulosin Hcl3918
Fluticasone PropionateFluticasone Propionate3519
Albuterol Sulfate HfaAlbuterol Sulfate3419
FamotidineFamotidine34suppressed
Pravastatin SodiumPravastatin Sodium3411
JardianceEmpagliflozin3311
ClopidogrelClopidogrel Bisulfate3011
Lantus SolostarInsulin Glargine,hum.Rec.Anlog28suppressed
SynthroidLevothyroxine Sodium28suppressed
EliquisApixaban2711
Sertraline HclSertraline Hcl25suppressed
TrulicityDulaglutide23suppressed
ValsartanValsartan23suppressed
Benazepril HclBenazepril Hcl19suppressed
Pioglitazone HclPioglitazone Hcl18suppressed
PrednisonePrednisone18suppressed
FurosemideFurosemide17suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide17suppressed
Nortriptyline HclNortriptyline Hcl17suppressed
Wixela InhubFluticasone Propion/Salmeterol16suppressed
ChlorthalidoneChlorthalidone15suppressed
Montelukast SodiumMontelukast Sodium15suppressed
CelecoxibCelecoxib14suppressed
Fluticasone Propionate HfaFluticasone Propionate14suppressed
IrbesartanIrbesartan14suppressed
Pantoprazole SodiumPantoprazole Sodium14suppressed
Potassium ChloridePotassium Chloride14suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid14suppressed
EntrestoSacubitril/Valsartan13suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13suppressed
Metoprolol TartrateMetoprolol Tartrate13suppressed
RamiprilRamipril13suppressed
Triamcinolone AcetonideTriamcinolone Acetonide13suppressed
Alendronate SodiumAlendronate Sodium12suppressed
AtenololAtenolol12suppressed
Escitalopram OxalateEscitalopram Oxalate12suppressed
RybelsusSemaglutide12suppressed
EzetimibeEzetimibe11suppressed

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