Healthcare provider profile · identity verified

Greg Michael Johnson, M.D

Internal Medicine · VADNAIS HEIGHTS, MN · NPI 1548419138

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 Calcium256102
LisinoprilLisinopril16466
Amlodipine BesylateAmlodipine Besylate12645
Levothyroxine SodiumLevothyroxine Sodium12644
OmeprazoleOmeprazole10239
Losartan PotassiumLosartan Potassium9643
SimvastatinSimvastatin8733
Rosuvastatin CalciumRosuvastatin Calcium7534
Metformin Hcl ErMetformin Hcl6620
Tamsulosin HclTamsulosin Hcl6222
ChlorthalidoneChlorthalidone5922
Metoprolol SuccinateMetoprolol Succinate5824
Metoprolol TartrateMetoprolol Tartrate5415
GabapentinGabapentin5220
HydrochlorothiazideHydrochlorothiazide4618
AllopurinolAllopurinol4515
Alendronate SodiumAlendronate Sodium4314
AtenololAtenolol4319
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4313
Citalopram HbrCitalopram Hydrobromide4115
Tramadol HclTramadol Hcl4113
Trazodone HclTrazodone Hcl3917
Albuterol Sulfate HfaAlbuterol Sulfate37suppressed
DiazepamDiazepam34suppressed
Pantoprazole SodiumPantoprazole Sodium3313
Fluticasone PropionateFluticasone Propionate3214
Metformin HclMetformin Hcl3215
FurosemideFurosemide3111
Warfarin SodiumWarfarin Sodium3011
Venlafaxine Hcl ErVenlafaxine Hcl2911
Bupropion XlBupropion Hcl27suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl2712
Duloxetine HclDuloxetine Hcl27suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen26suppressed
Pravastatin SodiumPravastatin Sodium26suppressed
Oxybutynin Chloride ErOxybutynin Chloride25suppressed
CelecoxibCelecoxib24suppressed
Escitalopram OxalateEscitalopram Oxalate2411
Potassium ChloridePotassium Chloride24suppressed
Glipizide ErGlipizide23suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen23suppressed
Oxycodone HclOxycodone Hcl22suppressed
PrednisonePrednisone2215
EliquisApixaban21suppressed
FamotidineFamotidine21suppressed
PregabalinPregabalin21suppressed
Fluoxetine HclFluoxetine Hcl20suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20suppressed
LorazepamLorazepam20suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1916
Doxycycline HyclateDoxycycline Hyclate1918
Sertraline HclSertraline Hcl19suppressed
Buspirone HclBuspirone Hcl18suppressed
FinasterideFinasteride18suppressed
TopiramateTopiramate18suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid18suppressed
JardianceEmpagliflozin17suppressed
MounjaroTirzepatide17suppressed
Zolpidem TartrateZolpidem Tartrate17suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1512
PaxlovidNirmatrelvir/Ritonavir1515
Pramipexole DihydrochloridePramipexole Di-Hcl15suppressed
SynthroidLevothyroxine Sodium15suppressed
ClonazepamClonazepam14suppressed
GlipizideGlipizide14suppressed
ValacyclovirValacyclovir Hcl14suppressed
AlprazolamAlprazolam13suppressed
Amitriptyline HclAmitriptyline Hcl13suppressed
EzetimibeEzetimibe13suppressed
LovastatinLovastatin13suppressed
OzempicSemaglutide13suppressed
IrbesartanIrbesartan12suppressed
Prochlorperazine MaleateProchlorperazine Maleate12suppressed
Doxycycline MonohydrateDoxycycline Monohydrate11suppressed
RamiprilRamipril11suppressed
Terazosin HclTerazosin Hcl11suppressed
Tizanidine HclTizanidine Hcl11suppressed
Tramadol Hcl-AcetaminophenTramadol Hcl/Acetaminophen11suppressed

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