Healthcare provider profile · identity verified

John Koehler, MD

Family Practice · CAMAS, WA · NPI 1962602052

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 Calcium531139
Losartan PotassiumLosartan Potassium24071
Levothyroxine SodiumLevothyroxine Sodium21551
Amlodipine BesylateAmlodipine Besylate21060
OmeprazoleOmeprazole14937
LisinoprilLisinopril14848
GabapentinGabapentin14538
Tamsulosin HclTamsulosin Hcl13234
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen12427
Rosuvastatin CalciumRosuvastatin Calcium11940
Metformin HclMetformin Hcl10726
Metoprolol SuccinateMetoprolol Succinate9931
OzempicSemaglutide9020
Metformin Hcl ErMetformin Hcl8522
HydrochlorothiazideHydrochlorothiazide8322
Sertraline HclSertraline Hcl8020
FurosemideFurosemide7922
SimvastatinSimvastatin7723
JardianceEmpagliflozin6521
Trazodone HclTrazodone Hcl6520
EliquisApixaban6313
Metoprolol TartrateMetoprolol Tartrate5516
AllopurinolAllopurinol5214
Pantoprazole SodiumPantoprazole Sodium44suppressed
Duloxetine HclDuloxetine Hcl43suppressed
ChlorthalidoneChlorthalidone4212
Albuterol Sulfate HfaAlbuterol Sulfate4116
CarvedilolCarvedilol4112
Fluoxetine HclFluoxetine Hcl41suppressed
GlipizideGlipizide4114
FinasterideFinasteride40suppressed
Alendronate SodiumAlendronate Sodium3914
Bupropion XlBupropion Hcl38suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3514
Pravastatin SodiumPravastatin Sodium3512
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide34suppressed
Escitalopram OxalateEscitalopram Oxalate32suppressed
Buspirone HclBuspirone Hcl31suppressed
EzetimibeEzetimibe29suppressed
PregabalinPregabalin2911
FamotidineFamotidine28suppressed
LorazepamLorazepam28suppressed
Quetiapine FumarateQuetiapine Fumarate28suppressed
Zolpidem TartrateZolpidem Tartrate2811
ClonazepamClonazepam23suppressed
SpironolactoneSpironolactone23suppressed
Oxybutynin Chloride ErOxybutynin Chloride22suppressed
Oxycodone HclOxycodone Hcl22suppressed
Tizanidine HclTizanidine Hcl2212
Triamcinolone AcetonideTriamcinolone Acetonide2212
AtenololAtenolol21suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol21suppressed
CelecoxibCelecoxib20suppressed
ClopidogrelClopidogrel Bisulfate20suppressed
Doxazosin MesylateDoxazosin Mesylate20suppressed
IrbesartanIrbesartan19suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog19suppressed
Olmesartan MedoxomilOlmesartan Medoxomil19suppressed
Potassium ChloridePotassium Chloride19suppressed
SymbicortBudesonide/Formoterol Fumarate19suppressed
AlprazolamAlprazolam18suppressed
LovastatinLovastatin18suppressed
Montelukast SodiumMontelukast Sodium18suppressed
FenofibrateFenofibrate17suppressed
MounjaroTirzepatide17suppressed
Paroxetine HclParoxetine Hcl17suppressed
PrednisonePrednisone1712
SynthroidLevothyroxine Sodium17suppressed
Venlafaxine Hcl ErVenlafaxine Hcl17suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1616
Ropinirole HclRopinirole Hcl16suppressed
Amitriptyline HclAmitriptyline Hcl15suppressed
MirtazapineMirtazapine15suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog15suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid15suppressed
Fluticasone PropionateFluticasone Propionate14suppressed
MeloxicamMeloxicam14suppressed
TradjentaLinagliptin14suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril13suppressed
AripiprazoleAripiprazole13suppressed
Candesartan CilexetilCandesartan Cilexetil13suppressed
Clonidine HclClonidine Hcl13suppressed
Divalproex SodiumDivalproex Sodium13suppressed
Venlafaxine HclVenlafaxine Hcl13suppressed
CephalexinCephalexin1212
DigoxinDigoxin12suppressed
Donepezil HclDonepezil Hcl12suppressed
Novolog FlexpenInsulin Aspart12suppressed
Propranolol HclPropranolol Hcl12suppressed
DiazepamDiazepam11suppressed
IbuprofenIbuprofen11suppressed
Klor-Con M20Potassium Chloride11suppressed
NystatinNystatin11suppressed
TorsemideTorsemide11suppressed
ValacyclovirValacyclovir Hcl11suppressed

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