Healthcare provider profile · identity verified

John Michael Jansen, MD

Family Practice · MUSKEGON, MI · NPI 1437711520

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 Calcium22581
Levothyroxine SodiumLevothyroxine Sodium13136
Amlodipine BesylateAmlodipine Besylate12736
OmeprazoleOmeprazole12449
LisinoprilLisinopril11442
Rosuvastatin CalciumRosuvastatin Calcium10435
Losartan PotassiumLosartan Potassium9636
Trazodone HclTrazodone Hcl7328
Fluticasone PropionateFluticasone Propionate7041
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen7015
Albuterol Sulfate HfaAlbuterol Sulfate6533
GabapentinGabapentin6020
Pantoprazole SodiumPantoprazole Sodium5119
Tamsulosin HclTamsulosin Hcl5120
Duloxetine HclDuloxetine Hcl5020
Metformin Hcl ErMetformin Hcl4417
Diclofenac SodiumDiclofenac Sodium4223
Metoprolol SuccinateMetoprolol Succinate4216
Potassium ChloridePotassium Chloride4213
HydrochlorothiazideHydrochlorothiazide4016
SimvastatinSimvastatin3915
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide3515
Escitalopram OxalateEscitalopram Oxalate3412
Buspirone HclBuspirone Hcl3313
Metformin HclMetformin Hcl3214
PregabalinPregabalin3214
Trelegy ElliptaFluticasone/Umeclidin/Vilanter32suppressed
Metoprolol TartrateMetoprolol Tartrate31suppressed
EliquisApixaban2812
Hydroxyzine HclHydroxyzine Hcl28suppressed
Citalopram HbrCitalopram Hydrobromide2711
Alendronate SodiumAlendronate Sodium2611
OzempicSemaglutide26suppressed
Sertraline HclSertraline Hcl26suppressed
Bupropion XlBupropion Hcl25suppressed
FamotidineFamotidine25suppressed
Fluoxetine HclFluoxetine Hcl23suppressed
Pravastatin SodiumPravastatin Sodium2312
JardianceEmpagliflozin22suppressed
Olmesartan MedoxomilOlmesartan Medoxomil2212
TrulicityDulaglutide22suppressed
MounjaroTirzepatide21suppressed
Venlafaxine Hcl ErVenlafaxine Hcl21suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2017
Cyclobenzaprine HclCyclobenzaprine Hcl20suppressed
FarxigaDapagliflozin Propanediol20suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
LovastatinLovastatin20suppressed
Tramadol HclTramadol Hcl20suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl19suppressed
PrednisonePrednisone1815
SpironolactoneSpironolactone18suppressed
Tizanidine HclTizanidine Hcl17suppressed
AllopurinolAllopurinol16suppressed
EzetimibeEzetimibe15suppressed
SynthroidLevothyroxine Sodium15suppressed
CarvedilolCarvedilol14suppressed
AtenololAtenolol13suppressed
Azelastine HclAzelastine Hcl13suppressed
AzithromycinAzithromycin1311
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide13suppressed
Ropinirole HclRopinirole Hcl13suppressed
TemazepamTemazepam13suppressed
Triamcinolone AcetonideTriamcinolone Acetonide13suppressed
ValsartanValsartan13suppressed
ClopidogrelClopidogrel Bisulfate12suppressed
LorazepamLorazepam12suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide12suppressed
Propranolol Hcl ErPropranolol Hcl12suppressed
Zolpidem TartrateZolpidem Tartrate12suppressed
Atomoxetine HclAtomoxetine Hcl11suppressed
GlipizideGlipizide11suppressed

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