Healthcare provider profile · identity verified

John Edward Janikowski, DO

Family Practice · A.P.O., CA · NPI 1326172685

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
Losartan PotassiumLosartan Potassium17548
Amlodipine BesylateAmlodipine Besylate15644
LisinoprilLisinopril15538
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen15020
Atorvastatin CalciumAtorvastatin Calcium13538
Metformin HclMetformin Hcl10730
AllopurinolAllopurinol10525
Pantoprazole SodiumPantoprazole Sodium10223
Metoprolol SuccinateMetoprolol Succinate10027
Tamsulosin HclTamsulosin Hcl9425
Rosuvastatin CalciumRosuvastatin Calcium8924
Pioglitazone HclPioglitazone Hcl7320
FurosemideFurosemide7119
Levothyroxine SodiumLevothyroxine Sodium6919
GabapentinGabapentin6817
HydrochlorothiazideHydrochlorothiazide6619
PrednisonePrednisone6226
Oxycodone HclOxycodone Hcl5812
LovastatinLovastatin5715
OmeprazoleOmeprazole5519
SimvastatinSimvastatin5412
Metoprolol TartrateMetoprolol Tartrate47suppressed
AtenololAtenolol4412
Cyclobenzaprine HclCyclobenzaprine Hcl4323
LevofloxacinLevofloxacin4127
LorazepamLorazepam4014
Potassium ChloridePotassium Chloride4013
CarvedilolCarvedilol39suppressed
ClonazepamClonazepam3912
Felodipine ErFelodipine37suppressed
Zolpidem TartrateZolpidem Tartrate36suppressed
Donepezil HclDonepezil Hcl35suppressed
AzithromycinAzithromycin3426
CelecoxibCelecoxib3411
DiazepamDiazepam34suppressed
BumetanideBumetanide33suppressed
Meclizine HclMeclizine Hcl3213
ColchicineColchicine3111
FluconazoleFluconazole31suppressed
Warfarin SodiumWarfarin Sodium31suppressed
Albuterol Sulfate HfaAlbuterol Sulfate3015
XareltoRivaroxaban30suppressed
Ondansetron OdtOndansetron2913
Sertraline HclSertraline Hcl29suppressed
FenofibrateFenofibrate Nanocrystallized27suppressed
GlipizideGlipizide27suppressed
ClopidogrelClopidogrel Bisulfate26suppressed
Hydroxyzine HclHydroxyzine Hcl25suppressed
EliquisApixaban24suppressed
HydrocortisoneHydrocortisone2413
Tramadol HclTramadol Hcl24suppressed
Clonidine HclClonidine Hcl23suppressed
Duloxetine HclDuloxetine Hcl23suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide23suppressed
OzempicSemaglutide23suppressed
IndomethacinIndomethacin22suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl21suppressed
Breo ElliptaFluticasone/Vilanterol20suppressed
Nifedipine ErNifedipine20suppressed
FamotidineFamotidine19suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol19suppressed
JanuviaSitagliptin Phosphate18suppressed
PregabalinPregabalin18suppressed
Escitalopram OxalateEscitalopram Oxalate17suppressed
GemfibrozilGemfibrozil17suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride1714
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1712
TorsemideTorsemide17suppressed
ValacyclovirValacyclovir Hcl17suppressed
FenofibrateFenofibrate16suppressed
Fluticasone PropionateFluticasone Propionate16suppressed
MeloxicamMeloxicam16suppressed
MethylprednisoloneMethylprednisolone1611
Acetaminophen-CodeineAcetaminophen With Codeine14suppressed
CephalexinCephalexin1411
Enoxaparin SodiumEnoxaparin Sodium14suppressed
IbuprofenIbuprofen14suppressed
Trazodone HclTrazodone Hcl14suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium13suppressed
JardianceEmpagliflozin13suppressed
NitroglycerinNitroglycerin13suppressed
ShingrixVaricella-Zoster Ge/As01b/Pf1311
SpironolactoneSpironolactone13suppressed
Sumatriptan SuccinateSumatriptan Succinate13suppressed
CilostazolCilostazol12suppressed
PaxlovidNirmatrelvir/Ritonavir1212
LatanoprostLatanoprost11suppressed
Methylphenidate HclMethylphenidate Hcl11suppressed
Spiriva HandihalerTiotropium Bromide11suppressed

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