Healthcare provider profile · identity verified

Mark Gerard Byrne, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Interventional Cardiology · WATSONVILLE, CA · NPI 1962411272

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 Mark Gerard Byrne, M.D. received $1,238.85 in general payments during 2025 across 36 reported records.

HEARTFLOW, INC. accounted for 27.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 21 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Eliquis, Farxiga, Jardiance, Kerendia, Ozempic, Rexulti, Rybelsus, Trelegy Ellipta, Wegovy.

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 114 claims for Farxiga by this doctor in 2024.

Bayer Healthcare 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 Kerendia as an associated drug or biological on 138674 records involving 48458 distinct recipient NPIs. Public Medicare Part D data also shows 46 claims for Kerendia 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 68 claims for Jardiance by this doctor in 2024.

E.R. Squibb & Sons, L.L.C. 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 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 62 claims for Eliquis 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 56 claims for Trelegy Ellipta 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 12 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 70 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 31 claims for Rybelsus 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 Wegovy as an associated drug or biological on 183056 records involving 75256 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Wegovy by this doctor in 2024.

Otsuka America Pharmaceutical, 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 REXULTI as an associated drug or biological on 160756 records involving 46288 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Rexulti by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,238.85

36 reported records · 17 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
HEARTFLOW, INC. Unresolved — no canonical attribution shown $338.3027.3%32025
Novo Nordisk Inc Unresolved — no canonical attribution shown $275.8322.3%112025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $172.2313.9%32025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $60.304.9%32025
Itamar Medical Inc Unresolved — no canonical attribution shown $56.664.6%12025
Viatris Specialty LLC Unresolved — no canonical attribution shown $52.194.2%22025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $45.423.7%22025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $44.583.6%22025
Amgen Inc. Unresolved — no canonical attribution shown $31.832.6%12025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $31.372.5%12025
DePuy Synthes Sales Inc. Unresolved — no canonical attribution shown $23.361.9%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $21.541.7%12025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $20.401.6%12025
Lundbeck LLC Unresolved — no canonical attribution shown $18.671.5%12025
Philips North America LLC Unresolved — no canonical attribution shown $16.721.4%12025
Paratek Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $15.961.3%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $13.491.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,238.8536

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
FFRct
Normalized: ffrct
Device HEARTFLOW, INC. $338.30 3 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $172.23 3 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $151.84 5 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $123.99 6 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC, Otsuka America Pharmaceutical, Inc. $64.09 3 2025
Source payment records
WatchPATONE
Normalized: watchpatone
Device Itamar Medical Inc $56.66 1 2025
Source payment records
YUPELRI
Normalized: yupelri
Drug Viatris Specialty LLC $52.19 2 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $50.83 2 2025
Source payment records
LOKELMA
Normalized: lokelma
Drug AstraZeneca Pharmaceuticals LP $42.66 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $31.83 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $31.83 1 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $31.37 1 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $30.44 1 2025
Source payment records
ORTHOVISC
Normalized: orthovisc
Device DePuy Synthes Sales Inc. $23.36 1 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $21.54 1 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug E.R. Squibb & Sons, L.L.C. $20.40 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $17.64 1 2025
Source payment records
Vest Therapy Und
Normalized: vest therapy und
Device Philips North America LLC $16.72 1 2025
Source payment records
NUZYRA
Normalized: nuzyra
Drug Paratek Pharmaceuticals, Inc. $15.96 1 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $14.14 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $13.49 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 62 exact normalized Medicare Part D
FARXIGA
farxiga
2025 Farxiga 2024 114 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 68 exact normalized Medicare Part D
Kerendia
kerendia
2025 Kerendia 2024 46 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 70 exact normalized Medicare Part D
REXULTI
rexulti
2025 Rexulti 2024 12
Beneficiary count suppressed
exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 31 exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 56 exact normalized Medicare Part D
Wegovy
wegovy
2025 Wegovy 2024 12
Beneficiary count suppressed
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
114 34
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Kerendia
open payments reported associated product
CMS Open Payments — General Payments
138674 supporting records · 48458 recipient NPIs · example record 1225434663
Kerendia · 2024
Exact normalized brand match · 1 Part D row
46 15
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
68 25
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
27956 supporting records · 14870 recipient NPIs · example record 1184377713
Eliquis · 2024
Exact normalized brand match · 1 Part D row
62 18
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
56 16
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
12 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
70 16
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
31 14
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Wegovy
open payments reported associated product
CMS Open Payments — General Payments
183056 supporting records · 75256 recipient NPIs · example record 1188130070
Wegovy · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
Otsuka America Pharmaceutical, Inc.
Exact reporting entity; no affiliate inference
2025 REXULTI
open payments reported associated product
CMS Open Payments — General Payments
160756 supporting records · 46288 recipient NPIs · example record 1227267708
Rexulti · 2024
Exact normalized brand match · 1 Part D row
12 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
CarvedilolCarvedilol541138
Losartan PotassiumLosartan Potassium512156
Atorvastatin CalciumAtorvastatin Calcium477144
Rosuvastatin CalciumRosuvastatin Calcium358106
IrbesartanIrbesartan32485
Montelukast SodiumMontelukast Sodium27582
Metformin HclMetformin Hcl25476
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen24838
GabapentinGabapentin23069
OmeprazoleOmeprazole22669
Levothyroxine SodiumLevothyroxine Sodium21257
Olmesartan MedoxomilOlmesartan Medoxomil19050
Amlodipine BesylateAmlodipine Besylate18654
AlprazolamAlprazolam14029
MounjaroTirzepatide13921
ClopidogrelClopidogrel Bisulfate13535
Tamsulosin HclTamsulosin Hcl11833
Duloxetine HclDuloxetine Hcl11632
FarxigaDapagliflozin Propanediol11434
XareltoRivaroxaban10924
FurosemideFurosemide9427
Alendronate SodiumAlendronate Sodium9328
Diclofenac SodiumDiclofenac Sodium9238
EzetimibeEzetimibe8128
SpironolactoneSpironolactone7723
LorazepamLorazepam7317
Pantoprazole SodiumPantoprazole Sodium7319
ChlorthalidoneChlorthalidone7221
OzempicSemaglutide7016
JardianceEmpagliflozin6825
NitroglycerinNitroglycerin6747
Zolpidem TartrateZolpidem Tartrate6612
LisinoprilLisinopril6322
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav6247
EliquisApixaban6218
KetoconazoleKetoconazole5629
Metoprolol TartrateMetoprolol Tartrate5618
Trelegy ElliptaFluticasone/Umeclidin/Vilanter5616
Tramadol HclTramadol Hcl5219
AllopurinolAllopurinol5017
Breo ElliptaFluticasone/Vilanterol4917
Citalopram HbrCitalopram Hydrobromide4713
KerendiaFinerenone4615
Quetiapine FumarateQuetiapine Fumarate4612
HydrochlorothiazideHydrochlorothiazide4514
Amiodarone HclAmiodarone Hcl4411
LidocaineLidocaine4423
Metoclopramide HclMetoclopramide Hcl4313
TrulicityDulaglutide4313
Memantine HclMemantine Hcl42suppressed
IbuprofenIbuprofen41suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3915
Potassium ChloridePotassium Chloride38suppressed
Metoprolol SuccinateMetoprolol Succinate3711
Clonidine HclClonidine Hcl3615
TorsemideTorsemide3511
Trazodone HclTrazodone Hcl33suppressed
Escitalopram OxalateEscitalopram Oxalate32suppressed
Fluticasone PropionateFluticasone Propionate3112
Paroxetine HclParoxetine Hcl31suppressed
RybelsusSemaglutide3114
SimvastatinSimvastatin31suppressed
AzithromycinAzithromycin3026
MyrbetriqMirabegron3014
ColchicineColchicine29suppressed
Albuterol Sulfate HfaAlbuterol Sulfate28suppressed
ClonazepamClonazepam2812
GlipizideGlipizide28suppressed
OlanzapineOlanzapine28suppressed
EntrestoSacubitril/Valsartan27suppressed
PregabalinPregabalin27suppressed
JanuviaSitagliptin Phosphate26suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium25suppressed
Terbinafine HclTerbinafine Hcl2515
Amitriptyline HclAmitriptyline Hcl24suppressed
CelecoxibCelecoxib22suppressed
Meclizine HclMeclizine Hcl21suppressed
DapagliflozinDapagliflozin Propanediol20suppressed
DiazepamDiazepam20suppressed
Hydroxyzine HclHydroxyzine Hcl20suppressed
Ondansetron HclOndansetron Hcl20suppressed
RepaglinideRepaglinide19suppressed
Verapamil HclVerapamil Hcl19suppressed
Donepezil HclDonepezil Hcl18suppressed
LansoprazoleLansoprazole18suppressed
Memantine Hcl ErMemantine Hcl18suppressed
Nebivolol HclNebivolol Hcl18suppressed
Ventolin HfaAlbuterol Sulfate18suppressed
Ropinirole HclRopinirole Hcl17suppressed
Spiriva RespimatTiotropium Bromide17suppressed
Ciprofloxacin HclCiprofloxacin Hcl1614
FinasterideFinasteride16suppressed
Fluoxetine HclFluoxetine Hcl16suppressed
Hydralazine HclHydralazine Hcl16suppressed
MeloxicamMeloxicam16suppressed
NystatinNystatin16suppressed
Sertraline HclSertraline Hcl16suppressed
DigoxinDigoxin15suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl15suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine15suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate15suppressed
SucralfateSucralfate15suppressed
HumalogInsulin Lispro14suppressed
Repatha SureclickEvolocumab14suppressed
TelmisartanTelmisartan14suppressed
Tizanidine HclTizanidine Hcl14suppressed
Triamcinolone AcetonideTriamcinolone Acetonide14suppressed
FamotidineFamotidine13suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide13suppressed
ValacyclovirValacyclovir Hcl13suppressed
ValsartanValsartan13suppressed
Xtampza ErOxycodone Myristate13suppressed
EstradiolEstradiol12suppressed
Metformin Hcl ErMetformin Hcl12suppressed
Repatha SyringeEvolocumab12suppressed
RexultiBrexpiprazole12suppressed
WegovySemaglutide12suppressed
AcyclovirAcyclovir11suppressed
AripiprazoleAripiprazole11suppressed
LantusInsulin Glargine,hum.Rec.Anlog11suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog11suppressed
Morphine SulfateMorphine Sulfate11suppressed
Morphine Sulfate ErMorphine Sulfate11suppressed
Serevent DiskusSalmeterol Xinafoate11suppressed

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 $1,238.85 · 36 records HEARTFLOW, INC. AREXVY, AUSTEDO XR, ELIQUIS, EVENITY, FARXIGA, FFRct, JARDIANCE, Kerendia, LOKELMA, NUZYRA, ORTHOVISC, Ozempic, PROLIA, REXULTI, Rybelsus, TRELEGY ELLIPTA, The Cologuard Plus Collection Kit, Vest Therapy Und, WatchPATONE, Wegovy, YUPELRI 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