Healthcare provider profile · identity verified

Edward Guy Groenhout, M.D.

Internal Medicine · GRANTS PASS, OR · NPI 1760487557

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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 Calcium61993
LisinoprilLisinopril56179
Losartan PotassiumLosartan Potassium31549
Levothyroxine SodiumLevothyroxine Sodium30850
GabapentinGabapentin23334
Metformin Hcl ErMetformin Hcl23141
Amlodipine BesylateAmlodipine Besylate22046
OmeprazoleOmeprazole19151
OzempicSemaglutide18528
JardianceEmpagliflozin16731
Albuterol Sulfate HfaAlbuterol Sulfate15641
EliquisApixaban14222
Potassium ChloridePotassium Chloride13826
HydrochlorothiazideHydrochlorothiazide13422
Fluticasone PropionateFluticasone Propionate13339
SimvastatinSimvastatin12918
Metformin HclMetformin Hcl12726
Diclofenac SodiumDiclofenac Sodium11833
FamotidineFamotidine10331
Montelukast SodiumMontelukast Sodium9816
Duloxetine HclDuloxetine Hcl9520
FurosemideFurosemide9220
ClopidogrelClopidogrel Bisulfate8913
Oxybutynin Chloride ErOxybutynin Chloride8712
Sertraline HclSertraline Hcl8715
CarvedilolCarvedilol8620
Fluoxetine HclFluoxetine Hcl8513
Tamsulosin HclTamsulosin Hcl8216
Pantoprazole SodiumPantoprazole Sodium7813
Rosuvastatin CalciumRosuvastatin Calcium7513
Trazodone HclTrazodone Hcl7514
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic7223
Lantus SolostarInsulin Glargine,hum.Rec.Anlog6721
SpironolactoneSpironolactone66suppressed
Pravastatin SodiumPravastatin Sodium6518
IbuprofenIbuprofen6413
Cyclobenzaprine HclCyclobenzaprine Hcl6313
AtenololAtenolol60suppressed
Metoprolol TartrateMetoprolol Tartrate5915
ChlorthalidoneChlorthalidone58suppressed
NaproxenNaproxen48suppressed
Alendronate SodiumAlendronate Sodium47suppressed
Doxazosin MesylateDoxazosin Mesylate47suppressed
PregabalinPregabalin47suppressed
AllopurinolAllopurinol46suppressed
Diltiazem 24hr ErDiltiazem Hcl46suppressed
Quetiapine FumarateQuetiapine Fumarate45suppressed
Citalopram HbrCitalopram Hydrobromide44suppressed
Candesartan CilexetilCandesartan Cilexetil43suppressed
Clonidine HclClonidine Hcl43suppressed
Glipizide ErGlipizide43suppressed
Metoprolol SuccinateMetoprolol Succinate4211
Spiriva HandihalerTiotropium Bromide40suppressed
BaclofenBaclofen39suppressed
Escitalopram OxalateEscitalopram Oxalate39suppressed
EntrestoSacubitril/Valsartan38suppressed
Hydralazine HclHydralazine Hcl38suppressed
Wixela InhubFluticasone Propion/Salmeterol38suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3616
Bupropion XlBupropion Hcl35suppressed
Levemir FlexpenInsulin Detemir34suppressed
LidocaineLidocaine3413
EzetimibeEzetimibe32suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog30suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic3013
MirtazapineMirtazapine29suppressed
Ropinirole HclRopinirole Hcl29suppressed
FinasterideFinasteride28suppressed
TorsemideTorsemide28suppressed
Ventolin HfaAlbuterol Sulfate27suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen26suppressed
MeloxicamMeloxicam2611
MethotrexateMethotrexate Sodium26suppressed
Amitriptyline HclAmitriptyline Hcl25suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr25suppressed
Buspirone HclBuspirone Hcl25suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate25suppressed
Bupropion Hcl SrBupropion Hcl24suppressed
Ondansetron HclOndansetron Hcl24suppressed
AnastrozoleAnastrozole22suppressed
Bupropion HclBupropion Hcl22suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters22suppressed
HydrocortisoneHydrocortisone21suppressed
MyrbetriqMirabegron21suppressed
Nifedipine ErNifedipine21suppressed
OlanzapineOlanzapine21suppressed
MesalamineMesalamine20suppressed
Venlafaxine Hcl ErVenlafaxine Hcl20suppressed
Warfarin SodiumWarfarin Sodium20suppressed
AcyclovirAcyclovir18suppressed
FenofibrateFenofibrate Nanocrystallized18suppressed
Hydroxyzine PamoateHydroxyzine Pamoate18suppressed
PrednisonePrednisone18suppressed
EstradiolEstradiol17suppressed
Chlorpromazine HclChlorpromazine Hcl16suppressed
Oxybutynin ChlorideOxybutynin Chloride16suppressed
Prazosin HclPrazosin Hcl16suppressed
LeflunomideLeflunomide15suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst14suppressed
Meclizine HclMeclizine Hcl13suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid13suppressed
AzithromycinAzithromycin12suppressed
Paroxetine HclParoxetine Hcl12suppressed
SulfasalazineSulfasalazine12suppressed
Advair DiskusFluticasone Propion/Salmeterol11suppressed
Arnuity ElliptaFluticasone Furoate11suppressed
CarbamazepineCarbamazepine11suppressed
DuleraMometasone/Formoterol11suppressed
Imipramine HclImipramine Hcl11suppressed
Insulin SyringeSyringe-Needle,insulin,0.5 Ml11suppressed
Novolin NInsulin Nph Human Isophane11suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim11suppressed

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
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