Healthcare provider profile · identity verified

Gregory Duncan Mccarroll, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · SAN ANTONIO, TX · NPI 1255422614

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 Gregory Duncan Mccarroll, M.D. received $127.07 in general payments during 2025 across 2 reported records.

Novo Nordisk Inc accounted for 88.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

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 122 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$127.07

2 reported records · 2 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 $112.5088.5%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $14.5711.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$127.072

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
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $112.50 1 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $14.57 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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
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
122 27

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 Calcium584188
Levothyroxine SodiumLevothyroxine Sodium340106
LisinoprilLisinopril30898
HydrochlorothiazideHydrochlorothiazide28798
Losartan PotassiumLosartan Potassium28693
Rosuvastatin CalciumRosuvastatin Calcium26696
Amlodipine BesylateAmlodipine Besylate26289
Escitalopram OxalateEscitalopram Oxalate23571
GabapentinGabapentin18955
JardianceEmpagliflozin18959
Metformin HclMetformin Hcl18662
Tamsulosin HclTamsulosin Hcl15756
Pravastatin SodiumPravastatin Sodium15345
FurosemideFurosemide14562
Metoprolol SuccinateMetoprolol Succinate14143
OmeprazoleOmeprazole14042
AlprazolamAlprazolam13432
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13033
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12342
OzempicSemaglutide12227
Fluticasone PropionateFluticasone Propionate12059
Albuterol Sulfate HfaAlbuterol Sulfate11644
Tramadol HclTramadol Hcl11228
Pantoprazole SodiumPantoprazole Sodium10933
Montelukast SodiumMontelukast Sodium10237
SimvastatinSimvastatin9732
Bydureon BciseExenatide Microspheres9619
Esomeprazole MagnesiumEsomeprazole Magnesium9034
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide9032
Metoprolol TartrateMetoprolol Tartrate8625
Duloxetine HclDuloxetine Hcl8331
LorazepamLorazepam8323
Tizanidine HclTizanidine Hcl8123
Zolpidem TartrateZolpidem Tartrate8016
AllopurinolAllopurinol7725
ClonazepamClonazepam6914
Pioglitazone HclPioglitazone Hcl6825
GlipizideGlipizide6524
Sertraline HclSertraline Hcl6123
EliquisApixaban5915
MethylprednisoloneMethylprednisolone5643
ClopidogrelClopidogrel Bisulfate5420
Triamcinolone AcetonideTriamcinolone Acetonide5427
Acetaminophen-CodeineAcetaminophen With Codeine5212
Alendronate SodiumAlendronate Sodium5217
IbuprofenIbuprofen5019
Trazodone HclTrazodone Hcl5020
AzithromycinAzithromycin4638
Nifedipine ErNifedipine4616
SpironolactoneSpironolactone4516
Bupropion XlBupropion Hcl4420
Metformin Hcl ErMetformin Hcl4418
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4313
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim4333
CarvedilolCarvedilol4217
LovastatinLovastatin4212
PrednisonePrednisone4133
SynthroidLevothyroxine Sodium4114
ClotrimazoleClotrimazole4011
EzetimibeEzetimibe4011
Ondansetron HclOndansetron Hcl4016
GlimepirideGlimepiride3811
Glipizide ErGlipizide3611
FamotidineFamotidine3513
Ropinirole HclRopinirole Hcl3511
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide35suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl34suppressed
Hydralazine HclHydralazine Hcl3413
Paroxetine HclParoxetine Hcl34suppressed
JanuviaSitagliptin Phosphate33suppressed
RamiprilRamipril33suppressed
Breo ElliptaFluticasone/Vilanterol29suppressed
Citalopram HbrCitalopram Hydrobromide29suppressed
Fluoxetine HclFluoxetine Hcl28suppressed
ValsartanValsartan28suppressed
MyrbetriqMirabegron27suppressed
EstradiolEstradiol26suppressed
MeloxicamMeloxicam2613
XareltoRivaroxaban26suppressed
EszopicloneEszopiclone25suppressed
Hydroxyzine HclHydroxyzine Hcl2511
MounjaroTirzepatide25suppressed
TrulicityDulaglutide25suppressed
Warfarin SodiumWarfarin Sodium24suppressed
Doxazosin MesylateDoxazosin Mesylate23suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol23suppressed
PregabalinPregabalin23suppressed
Propranolol HclPropranolol Hcl23suppressed
AtenololAtenolol22suppressed
ChlorthalidoneChlorthalidone22suppressed
Diclofenac SodiumDiclofenac Sodium2212
Olmesartan MedoxomilOlmesartan Medoxomil22suppressed
Raloxifene HclRaloxifene Hcl22suppressed
Vitamin D2Ergocalciferol (Vitamin D2)22suppressed
Donepezil HclDonepezil Hcl21suppressed
IrbesartanIrbesartan21suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic21suppressed
Quetiapine FumarateQuetiapine Fumarate21suppressed
DutasterideDutasteride20suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2015
Solifenacin SuccinateSolifenacin Succinate20suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter20suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid20suppressed
CelecoxibCelecoxib19suppressed
FinasterideFinasteride19suppressed
Venlafaxine Hcl ErVenlafaxine Hcl19suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1814
Enalapril MaleateEnalapril Maleate18suppressed
LidocaineLidocaine18suppressed
Spiriva HandihalerTiotropium Bromide18suppressed
DiazepamDiazepam17suppressed
FluconazoleFluconazole1711
NaproxenNaproxen17suppressed
Verapamil ErVerapamil Hcl17suppressed
Amiodarone HclAmiodarone Hcl16suppressed
JantovenWarfarin Sodium16suppressed
JanumetSitagliptin Phos/Metformin Hcl16suppressed
PaxlovidNirmatrelvir/Ritonavir1616
AcyclovirAcyclovir15suppressed
CilostazolCilostazol15suppressed
Memantine HclMemantine Hcl15suppressed
Testosterone CypionateTestosterone Cypionate15suppressed
LevetiracetamLevetiracetam14suppressed
Benazepril HclBenazepril Hcl13suppressed
Ondansetron OdtOndansetron13suppressed
Potassium ChloridePotassium Chloride13suppressed
Promethazine HclPromethazine Hcl13suppressed
Bisoprolol FumarateBisoprolol Fumarate12suppressed
EplerenoneEplerenone12suppressed
Oxybutynin ChlorideOxybutynin Chloride12suppressed
PermethrinPermethrin12suppressed
PrimidonePrimidone12suppressed
Sumatriptan SuccinateSumatriptan Succinate12suppressed
TopiramateTopiramate12suppressed
Advair HfaFluticasone Propion/Salmeterol11suppressed
Amlodipine-ValsartanAmlodipine Besylate/Valsartan11suppressed
LumiganBimatoprost11suppressed
MethocarbamolMethocarbamol11suppressed
NystatinNystatin11suppressed
Synjardy XrEmpagliflozin/Metformin Hcl11suppressed
TradjentaLinagliptin11suppressed

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 $127.07 · 2 records Novo Nordisk Inc The Cologuard Plus Collection Kit, Wegovy 1
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