Healthcare provider profile · identity verified

Gordon L Grenn

Allopathic & Osteopathic Physicians|Family Medicine · LAKE WORTH, FL · NPI 1871603670

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 Gordon L Grenn received $23.25 in general payments during 2025 across 1 reported records.

Exact Sciences Corporation accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

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

Payment overview · 2025

General Payments

$23.25

1 reported records · 1 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
Exact Sciences Corporation Unresolved — no canonical attribution shown $23.25100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$23.251

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
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $23.25 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.

None of this doctor’s payer companies has same-entity product evidence that passes the publication threshold. The site does not infer company ownership, affiliates, or generic manufacturers.

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 Calcium459122
Amlodipine BesylateAmlodipine Besylate30676
AlprazolamAlprazolam29449
Losartan PotassiumLosartan Potassium24761
Levothyroxine SodiumLevothyroxine Sodium24063
Metformin HclMetformin Hcl22660
LisinoprilLisinopril22153
GabapentinGabapentin18042
OmeprazoleOmeprazole16347
FurosemideFurosemide14440
Rosuvastatin CalciumRosuvastatin Calcium14137
Tramadol HclTramadol Hcl13130
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen13019
EliquisApixaban12726
SimvastatinSimvastatin11932
Metoprolol TartrateMetoprolol Tartrate11424
Tamsulosin HclTamsulosin Hcl11428
HydrochlorothiazideHydrochlorothiazide10832
Trazodone HclTrazodone Hcl10421
Pantoprazole SodiumPantoprazole Sodium9024
Albuterol Sulfate HfaAlbuterol Sulfate8822
Metoprolol SuccinateMetoprolol Succinate8320
FinasterideFinasteride8014
MirtazapineMirtazapine7815
LorazepamLorazepam7420
Donepezil HclDonepezil Hcl7316
Sertraline HclSertraline Hcl7320
GlipizideGlipizide7117
CarvedilolCarvedilol6515
AzithromycinAzithromycin6047
ClonazepamClonazepam5914
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen5811
ClopidogrelClopidogrel Bisulfate5619
Potassium ChloridePotassium Chloride5312
Cyclobenzaprine HclCyclobenzaprine Hcl5014
DiazepamDiazepam48suppressed
Divalproex SodiumDivalproex Sodium48suppressed
JanuviaSitagliptin Phosphate4813
Montelukast SodiumMontelukast Sodium4413
Quetiapine FumarateQuetiapine Fumarate4415
AllopurinolAllopurinol4311
Memantine HclMemantine Hcl43suppressed
Oxycodone HclOxycodone Hcl41suppressed
TemazepamTemazepam4111
AtenololAtenolol40suppressed
Zolpidem TartrateZolpidem Tartrate4013
Fluoxetine HclFluoxetine Hcl3811
Escitalopram OxalateEscitalopram Oxalate37suppressed
SpironolactoneSpironolactone37suppressed
XareltoRivaroxaban34suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide33suppressed
Clonidine HclClonidine Hcl30suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide30suppressed
RamiprilRamipril30suppressed
FamotidineFamotidine29suppressed
Pravastatin SodiumPravastatin Sodium29suppressed
Paroxetine HclParoxetine Hcl28suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter28suppressed
IbuprofenIbuprofen2711
TradjentaLinagliptin27suppressed
FarxigaDapagliflozin Propanediol26suppressed
JardianceEmpagliflozin26suppressed
KetoconazoleKetoconazole2613
MeloxicamMeloxicam26suppressed
Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha26suppressed
Sildenafil CitrateSildenafil Citrate26suppressed
AmoxicillinAmoxicillin2417
Ciprofloxacin HclCiprofloxacin Hcl2418
GlimepirideGlimepiride24suppressed
LactuloseLactulose24suppressed
Morphine Sulfate ErMorphine Sulfate24suppressed
Metformin Hcl ErMetformin Hcl23suppressed
CephalexinCephalexin2216
EzetimibeEzetimibe22suppressed
ValsartanValsartan22suppressed
Hydralazine HclHydralazine Hcl21suppressed
MounjaroTirzepatide21suppressed
Nebivolol HclNebivolol Hcl21suppressed
Nifedipine ErNifedipine20suppressed
Ranolazine ErRanolazine20suppressed
Carbidopa-LevodopaCarbidopa/Levodopa18suppressed
Duloxetine HclDuloxetine Hcl18suppressed
EntrestoSacubitril/Valsartan18suppressed
PrednisonePrednisone18suppressed
SynthroidLevothyroxine Sodium18suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid18suppressed
Citalopram HbrCitalopram Hydrobromide17suppressed
MethylprednisoloneMethylprednisolone1713
Oxybutynin ChlorideOxybutynin Chloride17suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog16suppressed
Meclizine HclMeclizine Hcl16suppressed
Alendronate SodiumAlendronate Sodium15suppressed
FenofibrateFenofibrate15suppressed
LevofloxacinLevofloxacin1512
Ventolin HfaAlbuterol Sulfate15suppressed
Bupropion XlBupropion Hcl14suppressed
CelecoxibCelecoxib14suppressed
NaproxenNaproxen14suppressed
Propranolol HclPropranolol Hcl14suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine13suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl13suppressed
LatanoprostLatanoprost13suppressed
Neomycin-Polymyxin-HcNeomycin/Polymyxin B/Hydrocort13suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide13suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim13suppressed
Timolol MaleateTimolol Maleate13suppressed
TrintellixVortioxetine Hydrobromide13suppressed
Methadone HclMethadone Hcl12suppressed
PermethrinPermethrin12suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide12suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog11suppressed
Diclofenac SodiumDiclofenac Sodium11suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol11suppressed
Humalog Kwikpen U-100Insulin Lispro11suppressed
LevetiracetamLevetiracetam11suppressed
LubiprostoneLubiprostone11suppressed
Nitroglycerin PatchNitroglycerin11suppressed
OlanzapineOlanzapine11suppressed
Olmesartan MedoxomilOlmesartan Medoxomil11suppressed
Saxagliptin HclSaxagliptin Hcl11suppressed
SymbicortBudesonide/Formoterol Fumarate11suppressed

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 $23.25 · 1 records Exact Sciences Corporation Cologuard Collection Kit
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