Healthcare provider profile · identity verified

Greg Hackel, DO

Internal Medicine · HAMTRAMCK, MI · NPI 1891723185

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 Calcium35163
Levothyroxine SodiumLevothyroxine Sodium30244
FurosemideFurosemide22739
Metoprolol SuccinateMetoprolol Succinate22634
OmeprazoleOmeprazole22636
Amlodipine BesylateAmlodipine Besylate22537
Tamsulosin HclTamsulosin Hcl16724
Metoprolol TartrateMetoprolol Tartrate16232
Pantoprazole SodiumPantoprazole Sodium16225
Donepezil HclDonepezil Hcl13924
Potassium ChloridePotassium Chloride13819
EliquisApixaban13421
Losartan PotassiumLosartan Potassium13027
LisinoprilLisinopril12421
GabapentinGabapentin11625
SimvastatinSimvastatin11217
Escitalopram OxalateEscitalopram Oxalate11021
HydrochlorothiazideHydrochlorothiazide9519
Sertraline HclSertraline Hcl94suppressed
Quetiapine FumarateQuetiapine Fumarate9214
ClopidogrelClopidogrel Bisulfate9120
CarvedilolCarvedilol8515
Metformin HclMetformin Hcl7717
Rosuvastatin CalciumRosuvastatin Calcium73suppressed
Citalopram HbrCitalopram Hydrobromide71suppressed
Pravastatin SodiumPravastatin Sodium71suppressed
XareltoRivaroxaban70suppressed
FinasterideFinasteride69suppressed
Memantine HclMemantine Hcl69suppressed
MirtazapineMirtazapine6811
Trazodone HclTrazodone Hcl6712
Nifedipine ErNifedipine6411
Duloxetine HclDuloxetine Hcl52suppressed
FamotidineFamotidine50suppressed
Tramadol HclTramadol Hcl5017
AtenololAtenolol48suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl47suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen4715
SpironolactoneSpironolactone45suppressed
AllopurinolAllopurinol43suppressed
Bupropion XlBupropion Hcl43suppressed
Hydralazine HclHydralazine Hcl42suppressed
Albuterol Sulfate HfaAlbuterol Sulfate4115
LatanoprostLatanoprost4011
AlprazolamAlprazolam3711
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril37suppressed
JanuviaSitagliptin Phosphate36suppressed
Montelukast SodiumMontelukast Sodium36suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid35suppressed
Carbidopa-LevodopaCarbidopa/Levodopa33suppressed
TorsemideTorsemide33suppressed
Warfarin SodiumWarfarin Sodium32suppressed
MeloxicamMeloxicam30suppressed
MethocarbamolMethocarbamol30suppressed
Oxybutynin ChlorideOxybutynin Chloride30suppressed
Doxycycline HyclateDoxycycline Hyclate2920
Lantus SolostarInsulin Glargine,hum.Rec.Anlog29suppressed
NystatinNystatin2912
Alendronate SodiumAlendronate Sodium28suppressed
Ropinirole HclRopinirole Hcl28suppressed
Fluticasone PropionateFluticasone Propionate27suppressed
GlipizideGlipizide25suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2517
Tolterodine Tartrate ErTolterodine Tartrate24suppressed
Memantine Hcl ErMemantine Hcl23suppressed
Verapamil ErVerapamil Hcl23suppressed
Oxybutynin Chloride ErOxybutynin Chloride22suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2118
LevetiracetamLevetiracetam21suppressed
PregabalinPregabalin21suppressed
Tolterodine TartrateTolterodine Tartrate21suppressed
CephalexinCephalexin20suppressed
Meclizine HclMeclizine Hcl20suppressed
PrednisonePrednisone20suppressed
Divalproex SodiumDivalproex Sodium19suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol19suppressed
Klor-Con M20Potassium Chloride19suppressed
RisperidoneRisperidone19suppressed
Diltiazem 12hr ErDiltiazem Hcl18suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate18suppressed
LorazepamLorazepam17suppressed
Timolol MaleateTimolol Maleate17suppressed
Acetaminophen-CodeineAcetaminophen With Codeine16suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc16suppressed
OxcarbazepineOxcarbazepine16suppressed
Bupropion Hcl SrBupropion Hcl15suppressed
LactuloseLactulose15suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip14suppressed
Diltiazem HclDiltiazem Hcl14suppressed
FenofibrateFenofibrate Nanocrystallized14suppressed
Fluoxetine HclFluoxetine Hcl14suppressed
Isosorbide DinitrateIsosorbide Dinitrate14suppressed
LovastatinLovastatin14suppressed
MethylprednisoloneMethylprednisolone14suppressed
CelecoxibCelecoxib13suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate13suppressed
LoperamideLoperamide Hcl13suppressed
Metformin Hcl ErMetformin Hcl13suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl13suppressed
Risedronate SodiumRisedronate Sodium13suppressed
RivastigmineRivastigmine Tartrate13suppressed
Amlodipine-AtorvastatinAmlodipine/Atorvastatin12suppressed
Benztropine MesylateBenztropine Mesylate12suppressed
Breo ElliptaFluticasone/Vilanterol12suppressed
CalcitriolCalcitriol12suppressed
ChlorthalidoneChlorthalidone12suppressed
HydrocortisoneHydrocortisone12suppressed
Olmesartan MedoxomilOlmesartan Medoxomil12suppressed
Paroxetine HclParoxetine Hcl12suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended12suppressed
TrimethoprimTrimethoprim12suppressed
Trospium ChlorideTrospium Chloride12suppressed
Venlafaxine HclVenlafaxine Hcl12suppressed
Buspirone HclBuspirone Hcl11suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl11suppressed
EntacaponeEntacapone11suppressed
Midodrine HclMidodrine Hcl11suppressed
OlanzapineOlanzapine11suppressed
Ranolazine ErRanolazine11suppressed
SynthroidLevothyroxine Sodium11suppressed
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
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