Healthcare provider profile · identity verified

David W Gannon, MD

Allopathic & Osteopathic Physicians|Family Medicine · CHANDLER, AZ · NPI 1477534816

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 David W Gannon, MD received $356.22 in general payments during 2025 across 19 reported records.

PFIZER INC. accounted for 21.6% 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: Eliquis, Mounjaro, Paxlovid.

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 73 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 16 claims for Symbicort 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 41 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 133 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 MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Mounjaro 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 12 claims for Trulicity by this doctor in 2024.

Novartis Pharmaceuticals Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ENTRESTO as an associated drug or biological on 9346 records involving 6254 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Entresto 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 199 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 21 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 16 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

$356.22

19 reported records · 12 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
PFIZER INC. Unresolved — no canonical attribution shown $77.0721.6%42025
Dexcom, Inc. Unresolved — no canonical attribution shown $59.3016.6%32025
Novo Nordisk Inc Unresolved — no canonical attribution shown $42.8312.0%22025
Exact Sciences Corporation Unresolved — no canonical attribution shown $31.018.7%22025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $29.128.2%12025
SANOFI PASTEUR INC. Unresolved — no canonical attribution shown $25.207.1%12025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $19.615.5%12025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $14.844.2%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $14.644.1%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $14.554.1%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $14.204.0%12025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $13.853.9%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$356.2219

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
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $59.91 3 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $59.30 3 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $43.26 2 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $31.01 2 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $29.12 1 2025
Source payment records
FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE
Normalized: flublok quadrivalent northern hemisphere
Biological SANOFI PASTEUR INC. $25.20 1 2025
Source payment records
FLUZONE HIGH-DOSE
Normalized: fluzone high dose
Biological SANOFI PASTEUR INC. $25.20 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $21.62 1 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $19.61 1 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $17.16 1 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $16.65 1 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $14.84 1 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $14.64 1 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $14.55 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $14.20 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $14.20 1 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $13.85 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
ELIQUIS
eliquis
2025 Eliquis 2024 21
Beneficiary count suppressed
exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 17
Beneficiary count suppressed
exact normalized Medicare Part D
PAXLOVID
paxlovid
2025 Paxlovid 2024 16 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
73 15
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
16 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
41 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
133 30
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
17 suppressed by CMS
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
12 suppressed by CMS
Novartis Pharmaceuticals Corporation
Exact reporting entity; no affiliate inference
2025 ENTRESTO
open payments reported associated product
CMS Open Payments — General Payments
9346 supporting records · 6254 recipient NPIs · example record 1200004797
Entresto · 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
199 34
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
21 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
16 16

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 Calcium519151
Levothyroxine SodiumLevothyroxine Sodium500131
Metformin Hcl ErMetformin Hcl382105
Rosuvastatin CalciumRosuvastatin Calcium34196
Pantoprazole SodiumPantoprazole Sodium335100
Amlodipine BesylateAmlodipine Besylate30279
LisinoprilLisinopril24064
Escitalopram OxalateEscitalopram Oxalate21248
Metoprolol SuccinateMetoprolol Succinate21058
SimvastatinSimvastatin20957
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20158
OzempicSemaglutide19934
HydrochlorothiazideHydrochlorothiazide19563
GabapentinGabapentin18643
Losartan PotassiumLosartan Potassium16752
Zolpidem TartrateZolpidem Tartrate14931
LorazepamLorazepam14741
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid14436
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13833
AllopurinolAllopurinol13734
Tramadol HclTramadol Hcl13735
Tamsulosin HclTamsulosin Hcl13644
JardianceEmpagliflozin13330
FurosemideFurosemide12836
OmeprazoleOmeprazole12532
Potassium ChloridePotassium Chloride12538
Trazodone HclTrazodone Hcl12428
Albuterol Sulfate HfaAlbuterol Sulfate12029
Metformin HclMetformin Hcl11535
AlprazolamAlprazolam11430
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide11429
Olmesartan MedoxomilOlmesartan Medoxomil11232
Sertraline HclSertraline Hcl9624
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide8624
FamotidineFamotidine8220
Montelukast SodiumMontelukast Sodium7822
XareltoRivaroxaban7816
MirtazapineMirtazapine7612
Metoprolol TartrateMetoprolol Tartrate7423
FarxigaDapagliflozin Propanediol7315
AzithromycinAzithromycin7259
Bupropion XlBupropion Hcl7217
GlimepirideGlimepiride7121
TemazepamTemazepam71suppressed
ClonazepamClonazepam6613
Fluoxetine HclFluoxetine Hcl6617
Diclofenac SodiumDiclofenac Sodium6518
PregabalinPregabalin6517
PrednisonePrednisone6432
Tizanidine HclTizanidine Hcl6424
Bupropion Hcl SrBupropion Hcl6115
Citalopram HbrCitalopram Hydrobromide6115
MeloxicamMeloxicam5917
AtenololAtenolol5816
FenofibrateFenofibrate5815
LovastatinLovastatin5612
Quetiapine FumarateQuetiapine Fumarate56suppressed
Oxycodone HclOxycodone Hcl54suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen51suppressed
EstradiolEstradiol5016
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav4945
Duloxetine HclDuloxetine Hcl48suppressed
Soliqua 100-33Insulin Glargine/Lixisenatide4611
IbuprofenIbuprofen4413
ClopidogrelClopidogrel Bisulfate4212
Fluticasone-SalmeterolFluticasone Propion/Salmeterol4217
Paroxetine HclParoxetine Hcl42suppressed
AcyclovirAcyclovir4113
Trelegy ElliptaFluticasone/Umeclidin/Vilanter41suppressed
CarvedilolCarvedilol40suppressed
Nebivolol HclNebivolol Hcl4014
Pravastatin SodiumPravastatin Sodium40suppressed
SynthroidLevothyroxine Sodium4011
Ciprofloxacin HclCiprofloxacin Hcl3628
FinasterideFinasteride35suppressed
Fluticasone PropionateFluticasone Propionate3519
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril3211
Morphine Sulfate ErMorphine Sulfate32suppressed
MethylprednisoloneMethylprednisolone3125
SpironolactoneSpironolactone31suppressed
Warfarin SodiumWarfarin Sodium30suppressed
Ondansetron HclOndansetron Hcl29suppressed
Sumatriptan SuccinateSumatriptan Succinate29suppressed
AmoxicillinAmoxicillin2724
Triamcinolone AcetonideTriamcinolone Acetonide2713
ValacyclovirValacyclovir Hcl2714
Verapamil ErVerapamil Hcl27suppressed
JanuviaSitagliptin Phosphate26suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl26suppressed
Venlafaxine Hcl ErVenlafaxine Hcl25suppressed
BaclofenBaclofen2412
Breo ElliptaFluticasone/Vilanterol24suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide24suppressed
Wixela InhubFluticasone Propion/Salmeterol23suppressed
EzetimibeEzetimibe22suppressed
FluconazoleFluconazole2214
GlipizideGlipizide22suppressed
Glipizide ErGlipizide22suppressed
Meclizine HclMeclizine Hcl2211
CefuroximeCefuroxime Axetil2119
EliquisApixaban21suppressed
Solifenacin SuccinateSolifenacin Succinate21suppressed
Medroxyprogesterone AcetateMedroxyprogesterone Acetate20suppressed
Testosterone CypionateTestosterone Cypionate20suppressed
Propranolol Hcl ErPropranolol Hcl19suppressed
BelsomraSuvorexant18suppressed
Buspirone HclBuspirone Hcl18suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr17suppressed
Donepezil HclDonepezil Hcl17suppressed
Doxycycline HyclateDoxycycline Hyclate1711
KetoconazoleKetoconazole1714
MounjaroTirzepatide17suppressed
CelecoxibCelecoxib16suppressed
Ibandronate SodiumIbandronate Sodium16suppressed
MethocarbamolMethocarbamol16suppressed
PaxlovidNirmatrelvir/Ritonavir1616
SymbicortBudesonide/Formoterol Fumarate16suppressed
ValsartanValsartan16suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl15suppressed
DiazepamDiazepam15suppressed
EntrestoSacubitril/Valsartan15suppressed
JanumetSitagliptin Phos/Metformin Hcl15suppressed
Nortriptyline HclNortriptyline Hcl15suppressed
RamiprilRamipril15suppressed
Terazosin HclTerazosin Hcl15suppressed
Amitriptyline HclAmitriptyline Hcl14suppressed
Hydralazine HclHydralazine Hcl14suppressed
LevofloxacinLevofloxacin1411
Victoza 3-PakLiraglutide14suppressed
Amlodipine-OlmesartanAmlodipine Bes/Olmesartan Med13suppressed
ColchicineColchicine13suppressed
Dicyclomine HclDicyclomine Hcl13suppressed
Nifedipine ErNifedipine13suppressed
Spiriva RespimatTiotropium Bromide13suppressed
Acetaminophen-CodeineAcetaminophen With Codeine12suppressed
AripiprazoleAripiprazole12suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine12suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium12suppressed
NadololNadolol12suppressed
PhenytekPhenytoin Sodium Extended12suppressed
Risedronate SodiumRisedronate Sodium12suppressed
RizatriptanRizatriptan Benzoate12suppressed
TopiramateTopiramate12suppressed
TrulicityDulaglutide12suppressed
Benazepril HclBenazepril Hcl11suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine11suppressed
Pioglitazone HclPioglitazone Hcl11suppressed
Propranolol HclPropranolol Hcl11suppressed
Spironolactone-HctzSpironolact/Hydrochlorothiazid11suppressed

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 $356.22 · 19 records PFIZER INC. AIRSUPRA, Auvelity, Cologuard Collection Kit, Dexcom G6 Transmitter, ELIQUIS, FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE, FLUZONE HIGH-DOSE, Kerendia, LEQVIO, MOUNJARO, NURTEC ODT, PAXLOVID, SHINGRIX, Veozah, Wegovy, ZAVZPRET, ZEPBOUND 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