Healthcare provider profile · identity verified

Ernest Yamamoto, MD

Allopathic & Osteopathic Physicians|Internal Medicine · FRESNO, CA · NPI 1396730529

Profile state: payments and partd 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

CMS Open Payments records show Ernest Yamamoto, MD received $1,385.86 in general payments during 2025 across 45 reported records.

AstraZeneca Pharmaceuticals LP accounted for 29.1% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 29 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga, Jardiance, Ozempic, Paxlovid.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Synthroid by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 34 claims for Farxiga by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Jardiance by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 49 claims for Trelegy Ellipta by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Jardiance by this doctor in 2024.

Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 40 claims for Ozempic by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Eliquis by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported PAXLOVID as an associated drug or biological on 24465 records involving 15715 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Paxlovid by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$1,385.86

45 reported records · 18 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $403.4629.1%92025
Eisai Inc. Unresolved — no canonical attribution shown $125.009.0%12025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $124.999.0%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $110.548.0%62025
ABBVIE INC. Unresolved — no canonical attribution shown $108.377.8%42025
PFIZER INC. Unresolved — no canonical attribution shown $84.886.1%42025
Exact Sciences Corporation Unresolved — no canonical attribution shown $82.145.9%32025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $68.935.0%32025
Lilly USA, LLC Unresolved — no canonical attribution shown $67.564.9%42025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $35.012.5%22025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $25.521.8%12025
Hologic Sales and Service, LLC Unresolved — no canonical attribution shown $24.151.7%12025
Inspire Medical Systems, Inc. Unresolved — no canonical attribution shown $22.701.6%12025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $21.951.6%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $21.001.5%12025
ViiV Healthcare Company Unresolved — no canonical attribution shown $20.601.5%12025
Kowa Pharmaceuticals America, Inc. Unresolved — no canonical attribution shown $20.491.5%12025
Globus Medical, Inc. Unresolved — no canonical attribution shown $18.571.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,385.8645

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $371.82 8 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $155.14 2 2025
Source payment records
Leqembi
Normalized: leqembi
Drug Eisai Inc. $125.00 1 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $124.99 1 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $123.50 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $89.24 5 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $82.14 3 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $68.93 3 2025
Source payment records
  • 2025-03-13 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $21.49 · Open Payments source
  • 2025-06-10 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $24.59 · Open Payments source
  • 2025-08-11 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $22.85 · Open Payments source
LINZESS
Normalized: linzess
Drug ABBVIE INC. $62.12 2 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $56.62 3 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $46.25 2 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $46.25 2 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Lilly USA, LLC $35.21 2 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $35.01 2 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $32.50 2 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $32.35 2 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $28.26 1 2025
Source payment records
COMIRNATY
Normalized: comirnaty
Biological PFIZER INC. $28.26 1 2025
Source payment records
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $28.26 1 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Otsuka America Pharmaceutical, Inc. $25.52 1 2025
Source payment records
APTIMA
Normalized: aptima
Device Hologic Sales and Service, LLC $24.15 1 2025
Source payment records
THINPREP 2000 PROCESSOR
Normalized: thinprep 2000 processor
Device Hologic Sales and Service, LLC $24.15 1 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $24.12 1 2025
Source payment records
INSPIRE
Normalized: inspire
Device Inspire Medical Systems, Inc. $22.70 1 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $21.95 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $21.30 1 2025
Source payment records
APRETUDE
Normalized: apretude
Drug ViiV Healthcare Company $20.60 1 2025
Source payment records
ZORYVE
Normalized: zoryve
Drug Kowa Pharmaceuticals America, Inc. $20.49 1 2025
Source payment records
Senza
Normalized: senza
Device Globus Medical, Inc. $18.57 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
FARXIGA
farxiga
2025 Farxiga 2024 34
Beneficiary count suppressed
exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 29
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 40
Beneficiary count suppressed
exact normalized Medicare Part D
PAXLOVID
paxlovid
2025 Paxlovid 2024 12 exact normalized Medicare Part D

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
24 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
34 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
29 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
49 12
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
29 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
40 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
24 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 PAXLOVID
open payments reported associated product
CMS Open Payments — General Payments
24465 supporting records · 15715 recipient NPIs · example record 1228794432
Paxlovid · 2024
Exact normalized brand match · 1 Part D row
12 12

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 Calcium718203
Rosuvastatin CalciumRosuvastatin Calcium30176
Amlodipine BesylateAmlodipine Besylate23970
LisinoprilLisinopril19359
Metformin HclMetformin Hcl19158
Metoprolol SuccinateMetoprolol Succinate18552
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen16922
Levothyroxine SodiumLevothyroxine Sodium15346
Albuterol Sulfate HfaAlbuterol Sulfate14943
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12942
Alendronate SodiumAlendronate Sodium10634
EzetimibeEzetimibe10333
Losartan PotassiumLosartan Potassium10231
HydrochlorothiazideHydrochlorothiazide10026
GabapentinGabapentin9728
FenofibrateFenofibrate8826
OmeprazoleOmeprazole8327
Zolpidem TartrateZolpidem Tartrate7912
Escitalopram OxalateEscitalopram Oxalate7622
Tramadol HclTramadol Hcl7511
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide7219
Tamsulosin HclTamsulosin Hcl7220
Cyclobenzaprine HclCyclobenzaprine Hcl6814
Olmesartan MedoxomilOlmesartan Medoxomil6015
AllopurinolAllopurinol5317
Donepezil HclDonepezil Hcl50suppressed
Pantoprazole SodiumPantoprazole Sodium5017
Trazodone HclTrazodone Hcl5011
Trelegy ElliptaFluticasone/Umeclidin/Vilanter4912
Metoprolol TartrateMetoprolol Tartrate4813
Hydralazine HclHydralazine Hcl4711
Bupropion XlBupropion Hcl44suppressed
Sertraline HclSertraline Hcl44suppressed
Acetaminophen-CodeineAcetaminophen With Codeine43suppressed
AlprazolamAlprazolam42suppressed
Pioglitazone HclPioglitazone Hcl4211
LorazepamLorazepam41suppressed
OzempicSemaglutide40suppressed
FurosemideFurosemide3915
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide39suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen38suppressed
SimvastatinSimvastatin38suppressed
FarxigaDapagliflozin Propanediol34suppressed
ClopidogrelClopidogrel Bisulfate32suppressed
FenofibrateFenofibrate Nanocrystallized32suppressed
BaclofenBaclofen31suppressed
FinasterideFinasteride31suppressed
IbuprofenIbuprofen3118
IrbesartanIrbesartan31suppressed
JardianceEmpagliflozin29suppressed
JanuviaSitagliptin Phosphate27suppressed
Ciprofloxacin HclCiprofloxacin Hcl2621
Icosapent EthylIcosapent Ethyl25suppressed
Venlafaxine Hcl ErVenlafaxine Hcl25suppressed
EliquisApixaban24suppressed
SynthroidLevothyroxine Sodium24suppressed
Potassium ChloridePotassium Chloride23suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl23suppressed
Fluticasone PropionateFluticasone Propionate22suppressed
ClonazepamClonazepam21suppressed
Memantine HclMemantine Hcl21suppressed
TemazepamTemazepam21suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide21suppressed
Ventolin HfaAlbuterol Sulfate21suppressed
Benazepril HclBenazepril Hcl20suppressed
Triamcinolone AcetonideTriamcinolone Acetonide20suppressed
XareltoRivaroxaban20suppressed
NitroglycerinNitroglycerin19suppressed
CarvedilolCarvedilol18suppressed
NaproxenNaproxen18suppressed
Ondansetron HclOndansetron Hcl18suppressed
ChlorthalidoneChlorthalidone16suppressed
ValsartanValsartan16suppressed
Amlodipine-ValsartanAmlodipine Besylate/Valsartan15suppressed
AtenololAtenolol15suppressed
EstradiolEstradiol15suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog15suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic15suppressed
Azelastine HclAzelastine Hcl14suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide14suppressed
Pravastatin SodiumPravastatin Sodium14suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog13suppressed
LovastatinLovastatin13suppressed
PregabalinPregabalin13suppressed
PrimidonePrimidone13suppressed
Sildenafil CitrateSildenafil Citrate13suppressed
AzithromycinAzithromycin1212
EdarbyclorAzilsartan Med/Chlorthalidone12suppressed
GlimepirideGlimepiride12suppressed
MethotrexateMethotrexate Sodium12suppressed
PaxlovidNirmatrelvir/Ritonavir1212
Varenicline TartrateVarenicline Tartrate12suppressed
FamotidineFamotidine11suppressed
Paroxetine HclParoxetine Hcl11suppressed
PropylthiouracilPropylthiouracil11suppressed
Rabeprazole SodiumRabeprazole Sodium11suppressed

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 $1,385.86 · 45 records AstraZeneca Pharmaceuticals LP ABRYSVO, AIRSUPRA, APRETUDE, APTIMA, BREZTRI, COMIRNATY, FARXIGA, INSPIRE, JARDIANCE, Kerendia, LINZESS, Leqembi, MOUNJARO, NURTEC ODT, Ozempic, PAXLOVID, PREVNAR 20, QULIPTA, REXULTI, SHINGRIX, Senza, THINPREP 2000 PROCESSOR, The Cologuard Plus Collection Kit, UBRELVY, VOQUEZNA, Wegovy, XIFAXAN, ZAVZPRET, ZORYVE 8
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