Healthcare provider profile · identity verified

Gervacio D Diaz, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · MODESTO, CA · NPI 1700835451

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 Gervacio D Diaz, M.D. received $835.54 in general payments during 2025 across 38 reported records.

Boehringer Ingelheim Pharmaceuticals, Inc. accounted for 20.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 23 associated products.

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

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 41 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 160 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 89 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 160 claims for Jardiance by this doctor in 2024.

Lundbeck 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 REXULTI as an associated drug or biological on 71829 records involving 25812 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Rexulti 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 54 claims for Ozempic 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Rybelsus 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 86 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 36 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

$835.54

38 reported records · 15 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
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $168.8520.2%72025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $156.7618.8%102025
Amgen Inc. Unresolved — no canonical attribution shown $97.6911.7%42025
Exact Sciences Corporation Unresolved — no canonical attribution shown $55.456.6%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $48.105.8%22025
PFIZER INC. Unresolved — no canonical attribution shown $45.595.5%22025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $45.075.4%22025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $43.585.2%22025
Lundbeck LLC Unresolved — no canonical attribution shown $32.913.9%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $29.933.6%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $29.363.5%12025
BioCryst US Sales Co., LLC Unresolved — no canonical attribution shown $28.573.4%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $19.432.3%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $17.162.0%12025
Currax Pharmaceuticals LLC Unresolved — no canonical attribution shown $17.092.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$835.5438

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
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $168.85 7 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $156.76 10 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $55.78 2 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $55.78 2 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $55.45 2 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $45.07 2 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $43.58 2 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $41.91 2 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC $32.91 1 2025
Source payment records
TAKHZYRO
Normalized: takhzyro
Biological Takeda Pharmaceuticals U.S.A., Inc. $29.93 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $29.46 1 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $29.43 1 2025
Source payment records
COMIRNATY
Normalized: comirnaty
Biological PFIZER INC. $29.43 1 2025
Source payment records
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $29.43 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $29.36 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $29.36 1 2025
Source payment records
ORLADEYO
Normalized: orladeyo
Drug BioCryst US Sales Co., LLC $28.57 1 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $26.73 1 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $19.43 1 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $17.16 1 2025
Source payment records
CONTRAVE
Normalized: contrave
Drug Currax Pharmaceuticals LLC $17.09 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $16.16 1 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $16.16 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
JARDIANCE
jardiance
2025 Jardiance 2024 160 exact normalized Medicare Part D
PAXLOVID
paxlovid
2025 Paxlovid 2024 36 exact normalized Medicare Part D
REXULTI
rexulti
2025 Rexulti 2024 15
Beneficiary count suppressed
exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 89 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
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
41 16
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
160 46
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
89 16
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
160 46
Lundbeck LLC
Exact reporting entity; no affiliate inference
2025 REXULTI
open payments reported associated product
CMS Open Payments — General Payments
71829 supporting records · 25812 recipient NPIs · example record 1251759986
Rexulti · 2024
Exact normalized brand match · 1 Part D row
15 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
54 12
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
12 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
86 25
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
36 35

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 Calcium834255
Amlodipine BesylateAmlodipine Besylate753210
Losartan PotassiumLosartan Potassium561160
Metformin HclMetformin Hcl480164
LisinoprilLisinopril454141
Levothyroxine SodiumLevothyroxine Sodium413112
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen37356
Tamsulosin HclTamsulosin Hcl314102
Quetiapine FumarateQuetiapine Fumarate31154
Metoprolol SuccinateMetoprolol Succinate26883
FurosemideFurosemide24774
GabapentinGabapentin23068
SimvastatinSimvastatin22249
HydrochlorothiazideHydrochlorothiazide21063
OmeprazoleOmeprazole20468
Montelukast SodiumMontelukast Sodium19463
CarvedilolCarvedilol18955
Tramadol HclTramadol Hcl18843
Pantoprazole SodiumPantoprazole Sodium18356
Rosuvastatin CalciumRosuvastatin Calcium17655
Potassium ChloridePotassium Chloride17254
AlprazolamAlprazolam16627
JardianceEmpagliflozin16046
GlimepirideGlimepiride13237
Sertraline HclSertraline Hcl12625
Hydralazine HclHydralazine Hcl11636
Pravastatin SodiumPravastatin Sodium10733
Fluoxetine HclFluoxetine Hcl10417
FamotidineFamotidine9532
MirtazapineMirtazapine94suppressed
Metoprolol TartrateMetoprolol Tartrate9131
EzetimibeEzetimibe9034
Trelegy ElliptaFluticasone/Umeclidin/Vilanter8916
AzithromycinAzithromycin8868
Alendronate SodiumAlendronate Sodium8723
ClopidogrelClopidogrel Bisulfate8724
EliquisApixaban8625
Terazosin HclTerazosin Hcl8626
TelmisartanTelmisartan8023
Benazepril HclBenazepril Hcl7923
AtenololAtenolol7518
Albuterol Sulfate HfaAlbuterol Sulfate6924
Donepezil HclDonepezil Hcl6921
FenofibrateFenofibrate6923
LovastatinLovastatin6820
Nifedipine ErNifedipine6518
IrbesartanIrbesartan6414
Duloxetine HclDuloxetine Hcl6313
ClonazepamClonazepam6219
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide6219
Diltiazem 24hr Er (Xr)Diltiazem Hcl61suppressed
LorazepamLorazepam5912
ValsartanValsartan5614
Fluticasone PropionateFluticasone Propionate5418
OzempicSemaglutide5412
Citalopram HbrCitalopram Hydrobromide5315
FinasterideFinasteride5215
MeloxicamMeloxicam5220
Trazodone HclTrazodone Hcl5117
AmoxicillinAmoxicillin4741
Morphine Sulfate ErMorphine Sulfate46suppressed
IbuprofenIbuprofen4513
PrednisonePrednisone4533
XareltoRivaroxaban4512
Escitalopram OxalateEscitalopram Oxalate4412
GlipizideGlipizide4414
Pioglitazone HclPioglitazone Hcl4412
SynthroidLevothyroxine Sodium44suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide4211
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip4119
FarxigaDapagliflozin Propanediol4116
Oxybutynin Chloride ErOxybutynin Chloride41suppressed
Warfarin SodiumWarfarin Sodium39suppressed
AllopurinolAllopurinol3813
Memantine HclMemantine Hcl38suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3730
DutasterideDutasteride3611
PaxlovidNirmatrelvir/Ritonavir3635
Nano 2nd Gen Pen NeedlePen Needle, Diabetic3512
Hydroxyzine HclHydroxyzine Hcl33suppressed
Venlafaxine Hcl ErVenlafaxine Hcl32suppressed
LinzessLinaclotide31suppressed
OlanzapineOlanzapine31suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3012
Lantus SolostarInsulin Glargine,hum.Rec.Anlog3011
Diclofenac SodiumDiclofenac Sodium29suppressed
Ciprofloxacin HclCiprofloxacin Hcl2826
EstradiolEstradiol28suppressed
Metformin Hcl ErMetformin Hcl28suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2816
Tolterodine Tartrate ErTolterodine Tartrate28suppressed
Divalproex SodiumDivalproex Sodium27suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid27suppressed
BaclofenBaclofen26suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl26suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen25suppressed
Paroxetine HclParoxetine Hcl25suppressed
PregabalinPregabalin25suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol24suppressed
SpironolactoneSpironolactone24suppressed
Verapamil ErVerapamil Hcl24suppressed
Bupropion XlBupropion Hcl23suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril22suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine22suppressed
Doxazosin MesylateDoxazosin Mesylate22suppressed
Tizanidine HclTizanidine Hcl22suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide21suppressed
Bupropion Hcl SrBupropion Hcl20suppressed
Clonidine HclClonidine Hcl20suppressed
LoperamideLoperamide Hcl20suppressed
Triamcinolone AcetonideTriamcinolone Acetonide20suppressed
ValacyclovirValacyclovir Hcl20suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate19suppressed
LevetiracetamLevetiracetam19suppressed
Propranolol HclPropranolol Hcl19suppressed
CephalexinCephalexin1814
Doxepin HclDoxepin Hcl18suppressed
FenofibrateFenofibrate Nanocrystallized18suppressed
JanuviaSitagliptin Phosphate18suppressed
Ondansetron HclOndansetron Hcl18suppressed
Ondansetron OdtOndansetron18suppressed
Insulin SyringeSyringe And Needle,insulin,1ml17suppressed
Meclizine HclMeclizine Hcl17suppressed
Wixela InhubFluticasone Propion/Salmeterol17suppressed
Azelastine HclAzelastine Hcl1511
Buspirone HclBuspirone Hcl15suppressed
ChlorthalidoneChlorthalidone15suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl15suppressed
NitroglycerinNitroglycerin15suppressed
RexultiBrexpiprazole15suppressed
Ropinirole HclRopinirole Hcl15suppressed
Soliqua 100-33Insulin Glargine/Lixisenatide15suppressed
Acetaminophen-CodeineAcetaminophen With Codeine14suppressed
BenzonatateBenzonatate1412
Dicyclomine HclDicyclomine Hcl14suppressed
Enalapril MaleateEnalapril Maleate14suppressed
Promethazine HclPromethazine Hcl14suppressed
SotalolSotalol Hcl14suppressed
Amitriptyline HclAmitriptyline Hcl13suppressed
DiazepamDiazepam13suppressed
DigoxinDigoxin13suppressed
FentanylFentanyl13suppressed
Humulin 70/30 KwikpenInsulin Nph Hum/Reg Insulin Hm13suppressed
LantusInsulin Glargine,hum.Rec.Anlog13suppressed
Novolog FlexpenInsulin Aspart13suppressed
Amiodarone HclAmiodarone Hcl12suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine12suppressed
Humalog Kwikpen U-100Insulin Lispro12suppressed
Humulin N KwikpenInsulin Nph Human Isophane12suppressed
Lurasidone HclLurasidone Hcl12suppressed
Morphine SulfateMorphine Sulfate12suppressed
RybelsusSemaglutide12suppressed
TestosteroneTestosterone12suppressed
AcyclovirAcyclovir11suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr11suppressed
BreynaBudesonide/Formoterol Fumarate11suppressed
CelecoxibCelecoxib11suppressed
Cyanocobalamin InjectionCyanocobalamin (Vitamin B-12)11suppressed
EplerenoneEplerenone11suppressed
Humalog Mix 75-25 KwikpenInsulin Lispro Protamin/Lispro11suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide11suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride11suppressed
LevofloxacinLevofloxacin1111
NystatinNystatin11suppressed
Oxycodone HclOxycodone Hcl11suppressed
Praluent PenAlirocumab11suppressed

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 $835.54 · 38 records Boehringer Ingelheim Pharmaceuticals, Inc. ABRYSVO, BREZTRI, CAPLYTA, COMIRNATY, CONTRAVE, EVENITY, GEMTESA, JARDIANCE, LEQVIO, MOUNJARO, NURTEC ODT, ORLADEYO, OTEZLA, PAXLOVID, PREVNAR 20, PROLIA, REPATHA, REXULTI, TAKHZYRO, TRELEGY ELLIPTA, The Cologuard Plus Collection Kit, Wegovy, ZEPBOUND 9
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