Healthcare provider profile · identity verified

William Thomas Gonzaba, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · SAN ANTONIO, TX · NPI 1548231905

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 William Thomas Gonzaba, M.D. received $614.99 in general payments during 2025 across 32 reported records.

Novo Nordisk Inc accounted for 13.6% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 17 associated products.

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

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 BRILINTA as an associated drug or biological on 993 records involving 512 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Brilinta 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 26 claims for Farxiga 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 SYMBICORT as an associated drug or biological on 71 records involving 51 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Symbicort 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 164 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 21 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 164 claims for Jardiance 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Trulicity 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 78 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 55 claims for Eliquis by this doctor in 2024.

SANOFI-AVENTIS U.S. 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 SOLIQUA 100/33 as an associated drug or biological on 43 records involving 15 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Soliqua 100-33 by this doctor in 2024.

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

Payment overview · 2025

General Payments

$614.99

32 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $83.8613.6%42025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $80.4313.1%32025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $77.5812.6%42025
Dynavax Technologies Corporation Unresolved — no canonical attribution shown $53.078.6%42025
SANOFI-AVENTIS U.S. LLC Unresolved — no canonical attribution shown $52.938.6%32025
Lilly USA, LLC Unresolved — no canonical attribution shown $52.838.6%32025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $42.086.8%22025
PFIZER INC. Unresolved — no canonical attribution shown $35.635.8%22025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $22.533.7%12025
Lundbeck LLC Unresolved — no canonical attribution shown $22.113.6%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $21.493.5%12025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $20.573.3%12025
Corcept Therapeutics Unresolved — no canonical attribution shown $18.403.0%12025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $17.082.8%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $14.402.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$614.9932

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
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $80.43 3 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $77.58 4 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $77.58 4 2025
Source payment records
Heplisav-B
Normalized: heplisav b
Drug Dynavax Technologies Corporation $53.07 4 2025
Source payment records
TZIELD
Normalized: tzield
Biological SANOFI-AVENTIS U.S. LLC $52.93 3 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $52.83 3 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $51.01 2 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $42.08 2 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $35.63 2 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $23.67 1 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $22.53 1 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC $22.11 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $21.49 1 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $20.57 1 2025
Source payment records
Korlym
Normalized: korlym
Drug Corcept Therapeutics $18.40 1 2025
Source payment records
ULTOMIRIS
Normalized: ultomiris
Biological Alexion Pharmaceuticals, Inc. $17.08 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $14.40 1 2025
Source payment records
  • 2025-08-25 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $14.40 · Open Payments source

* 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 26
Beneficiary count suppressed
exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 164 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 78 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 BRILINTA
open payments reported associated product
CMS Open Payments — General Payments
993 supporting records · 512 recipient NPIs · example record 1206131430
Brilinta · 2024
Exact normalized brand match · 1 Part D row
12 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
26 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 SYMBICORT
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 51 recipient NPIs · example record 1206132610
Symbicort · 2024
Exact normalized brand match · 1 Part D row
19 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
164 53
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
21 suppressed by CMS
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
164 53
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 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
78 18
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
55 16
SANOFI-AVENTIS U.S. LLC
Exact reporting entity; no affiliate inference
2025 SOLIQUA 100/33
open payments reported associated product
CMS Open Payments — General Payments
43 supporting records · 15 recipient NPIs · example record 1233224976
Soliqua 100-33 · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS

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
Rosuvastatin CalciumRosuvastatin Calcium566196
Amlodipine BesylateAmlodipine Besylate455156
Atorvastatin CalciumAtorvastatin Calcium396129
Losartan PotassiumLosartan Potassium347118
Tamsulosin HclTamsulosin Hcl30195
Metformin HclMetformin Hcl29793
LisinoprilLisinopril296102
Levothyroxine SodiumLevothyroxine Sodium28796
OmeprazoleOmeprazole26686
Fluticasone PropionateFluticasone Propionate25897
Metoprolol SuccinateMetoprolol Succinate17858
SimvastatinSimvastatin17864
JardianceEmpagliflozin16453
Vitamin D2Ergocalciferol (Vitamin D2)15859
Escitalopram OxalateEscitalopram Oxalate13647
Montelukast SodiumMontelukast Sodium12946
GabapentinGabapentin12847
Duloxetine HclDuloxetine Hcl11642
Pantoprazole SodiumPantoprazole Sodium11048
Tramadol HclTramadol Hcl10942
FurosemideFurosemide10337
CarvedilolCarvedilol10238
ClopidogrelClopidogrel Bisulfate9936
Metformin Hcl ErMetformin Hcl9630
Olmesartan MedoxomilOlmesartan Medoxomil9634
AlprazolamAlprazolam9526
Tizanidine HclTizanidine Hcl9534
JanuviaSitagliptin Phosphate9131
FenofibrateFenofibrate9023
Albuterol Sulfate HfaAlbuterol Sulfate8133
FinasterideFinasteride8129
Citalopram HbrCitalopram Hydrobromide8026
OzempicSemaglutide7818
GlipizideGlipizide7726
Metoprolol TartrateMetoprolol Tartrate7528
Alendronate SodiumAlendronate Sodium7122
LorazepamLorazepam6632
Pioglitazone HclPioglitazone Hcl6625
PregabalinPregabalin6418
AllopurinolAllopurinol6217
Diclofenac SodiumDiclofenac Sodium5926
HydrochlorothiazideHydrochlorothiazide5721
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5618
Donepezil HclDonepezil Hcl5522
EliquisApixaban5516
Sertraline HclSertraline Hcl5114
Nifedipine ErNifedipine4816
LovastatinLovastatin4515
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen43suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog4213
Acetaminophen-CodeineAcetaminophen With Codeine41suppressed
Nebivolol HclNebivolol Hcl41suppressed
Pravastatin SodiumPravastatin Sodium4114
Enalapril MaleateEnalapril Maleate3811
MyrbetriqMirabegron35suppressed
SpironolactoneSpironolactone35suppressed
EzetimibeEzetimibe34suppressed
TrintellixVortioxetine Hydrobromide33suppressed
Benazepril HclBenazepril Hcl3212
Buspirone HclBuspirone Hcl30suppressed
GemtesaVibegron30suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium2911
ClonazepamClonazepam28suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril27suppressed
FarxigaDapagliflozin Propanediol26suppressed
Hydralazine HclHydralazine Hcl26suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic2611
JanumetSitagliptin Phos/Metformin Hcl25suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog25suppressed
CarbamazepineCarbamazepine24suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate24suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog24suppressed
Trazodone HclTrazodone Hcl2411
Bupropion XlBupropion Hcl23suppressed
GemfibrozilGemfibrozil23suppressed
NitroglycerinNitroglycerin2215
ValsartanValsartan2211
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip2118
Sildenafil CitrateSildenafil Citrate21suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter21suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide20suppressed
FamotidineFamotidine19suppressed
SymbicortBudesonide/Formoterol Fumarate19suppressed
Levemir FlexpenInsulin Detemir18suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride17suppressed
Fluoxetine HclFluoxetine Hcl16suppressed
AtenololAtenolol15suppressed
Ciprofloxacin HclCiprofloxacin Hcl1514
Humalog Mix 75-25 KwikpenInsulin Lispro Protamin/Lispro15suppressed
Janumet XrSitagliptin Phos/Metformin Hcl15suppressed
MupirocinMupirocin15suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide15suppressed
TrulicityDulaglutide15suppressed
DigoxinDigoxin14suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters14suppressed
Tramadol Hcl-AcetaminophenTramadol Hcl/Acetaminophen14suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1312
Breo ElliptaFluticasone/Vilanterol13suppressed
CelecoxibCelecoxib13suppressed
EntrestoSacubitril/Valsartan13suppressed
Incontrol Pen NeedlePen Needle, Diabetic13suppressed
MeloxicamMeloxicam13suppressed
Potassium ChloridePotassium Chloride13suppressed
TradjentaLinagliptin13suppressed
Warfarin SodiumWarfarin Sodium13suppressed
BrilintaTicagrelor12suppressed
IbuprofenIbuprofen12suppressed
Mometasone FuroateMometasone Furoate12suppressed
Ondansetron HclOndansetron Hcl12suppressed
Oxybutynin ChlorideOxybutynin Chloride12suppressed
SynthroidLevothyroxine Sodium12suppressed
Terazosin HclTerazosin Hcl12suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide12suppressed
Bydureon BciseExenatide Microspheres11suppressed
FluconazoleFluconazole11suppressed
PentoxifyllinePentoxifylline11suppressed
Soliqua 100-33Insulin Glargine/Lixisenatide11suppressed

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 $614.99 · 32 records Novo Nordisk Inc AREXVY, Auvelity, CAPLYTA, FARXIGA, Heplisav-B, JARDIANCE, Korlym, MOUNJARO, Ozempic, PAXLOVID, REXULTI, REZDIFFRA, Rybelsus, SHINGRIX, TZIELD, ULTOMIRIS, XIFAXAN 10
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