Healthcare provider profile · identity verified

Timothy P Janzen, M.D.

Family Practice · PORTLAND, OR · NPI 1003845447

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 Calcium711209
Metformin HclMetformin Hcl28385
Metoprolol SuccinateMetoprolol Succinate26785
Levothyroxine SodiumLevothyroxine Sodium23967
LisinoprilLisinopril23273
Losartan PotassiumLosartan Potassium22276
Rosuvastatin CalciumRosuvastatin Calcium21975
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen21535
Tamsulosin HclTamsulosin Hcl20066
Trazodone HclTrazodone Hcl17546
Amlodipine BesylateAmlodipine Besylate15448
SimvastatinSimvastatin13437
HydrochlorothiazideHydrochlorothiazide12443
AlprazolamAlprazolam12230
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12233
Oxycodone HclOxycodone Hcl12119
OmeprazoleOmeprazole11038
EliquisApixaban10822
GabapentinGabapentin10428
Citalopram HbrCitalopram Hydrobromide9926
Albuterol Sulfate HfaAlbuterol Sulfate8330
Pantoprazole SodiumPantoprazole Sodium8022
GlipizideGlipizide7824
FinasterideFinasteride7720
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide7624
Zolpidem TartrateZolpidem Tartrate7611
EzetimibeEzetimibe7120
JardianceEmpagliflozin6822
Alendronate SodiumAlendronate Sodium6515
Sertraline HclSertraline Hcl6417
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen6115
Potassium ChloridePotassium Chloride5623
AllopurinolAllopurinol5519
Sodium Chloride0.9 % Sodium Chloride50suppressed
Metoprolol TartrateMetoprolol Tartrate4916
Warfarin SodiumWarfarin Sodium49suppressed
FurosemideFurosemide4422
ClopidogrelClopidogrel Bisulfate4313
CarvedilolCarvedilol4012
Donepezil HclDonepezil Hcl3812
Metformin Hcl ErMetformin Hcl3812
DiazepamDiazepam37suppressed
Oxybutynin ChlorideOxybutynin Chloride37suppressed
Fluoxetine HclFluoxetine Hcl35suppressed
OzempicSemaglutide35suppressed
XareltoRivaroxaban35suppressed
Bupropion XlBupropion Hcl31suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3112
Fluvoxamine MaleateFluvoxamine Maleate31suppressed
Montelukast SodiumMontelukast Sodium31suppressed
SpironolactoneSpironolactone3111
Lantus SolostarInsulin Glargine,hum.Rec.Anlog30suppressed
Propranolol HclPropranolol Hcl29suppressed
Tramadol HclTramadol Hcl29suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2916
Hydroxyzine HclHydroxyzine Hcl28suppressed
Olmesartan MedoxomilOlmesartan Medoxomil27suppressed
Bupropion HclBupropion Hcl26suppressed
LorazepamLorazepam26suppressed
Pioglitazone HclPioglitazone Hcl26suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2618
AcyclovirAcyclovir25suppressed
Ondansetron OdtOndansetron25suppressed
Clobetasol PropionateClobetasol Propionate24suppressed
Duloxetine HclDuloxetine Hcl23suppressed
FamotidineFamotidine23suppressed
SynthroidLevothyroxine Sodium23suppressed
Tizanidine HclTizanidine Hcl23suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate22suppressed
JanuviaSitagliptin Phosphate22suppressed
MeloxicamMeloxicam22suppressed
Buspirone HclBuspirone Hcl21suppressed
PregabalinPregabalin21suppressed
Testosterone CypionateTestosterone Cypionate21suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine20suppressed
GlimepirideGlimepiride20suppressed
Ondansetron HclOndansetron Hcl20suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol19suppressed
LovastatinLovastatin19suppressed
Methadone HclMethadone Hcl19suppressed
Venlafaxine Hcl ErVenlafaxine Hcl19suppressed
CarisoprodolCarisoprodol18suppressed
Escitalopram OxalateEscitalopram Oxalate18suppressed
TorsemideTorsemide18suppressed
AtenololAtenolol17suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium17suppressed
Pravastatin SodiumPravastatin Sodium17suppressed
Memantine HclMemantine Hcl16suppressed
NitroglycerinNitroglycerin1611
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid16suppressed
ValacyclovirValacyclovir Hcl16suppressed
EstradiolEstradiol15suppressed
Klor-Con M20Potassium Chloride15suppressed
OlanzapineOlanzapine15suppressed
Qvar RedihalerBeclomethasone Dipropionate15suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine14suppressed
ChlorthalidoneChlorthalidone14suppressed
Ciprofloxacin HclCiprofloxacin Hcl1413
Doxycycline HyclateDoxycycline Hyclate14suppressed
Morphine Sulfate ErMorphine Sulfate14suppressed
Quetiapine FumarateQuetiapine Fumarate14suppressed
Ropinirole HclRopinirole Hcl14suppressed
ValsartanValsartan14suppressed
HumalogInsulin Lispro13suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide13suppressed
Terbinafine HclTerbinafine Hcl1311
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril12suppressed
Diclofenac SodiumDiclofenac Sodium12suppressed
MethocarbamolMethocarbamol12suppressed
Sildenafil CitrateSildenafil Citrate12suppressed
Cyanocobalamin InjectionCyanocobalamin (Vitamin B-12)11suppressed
DapsoneDapsone11suppressed
FarxigaDapagliflozin Propanediol11suppressed
NaproxenNaproxen11suppressed
PrednisonePrednisone11suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog11suppressed

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