Healthcare provider profile · identity verified

Walter Scott Williams, M.D.

Family Practice · CORVALLIS, OR · NPI 1225099351

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 Calcium32883
GabapentinGabapentin15533
LisinoprilLisinopril12837
Amlodipine BesylateAmlodipine Besylate12338
Levothyroxine SodiumLevothyroxine Sodium11223
Metoprolol SuccinateMetoprolol Succinate10721
OmeprazoleOmeprazole10126
Trazodone HclTrazodone Hcl9921
Tramadol HclTramadol Hcl8512
Oxycodone HclOxycodone Hcl8315
JardianceEmpagliflozin8114
Losartan PotassiumLosartan Potassium7724
Tamsulosin HclTamsulosin Hcl7718
Metformin Hcl ErMetformin Hcl7314
TrulicityDulaglutide62suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen5912
Metformin HclMetformin Hcl5316
Fluoxetine HclFluoxetine Hcl52suppressed
ChlorthalidoneChlorthalidone5117
Albuterol Sulfate HfaAlbuterol Sulfate4921
Amitriptyline HclAmitriptyline Hcl43suppressed
Duloxetine HclDuloxetine Hcl43suppressed
Pantoprazole SodiumPantoprazole Sodium42suppressed
Bupropion XlBupropion Hcl41suppressed
Montelukast SodiumMontelukast Sodium40suppressed
ClonazepamClonazepam36suppressed
ClopidogrelClopidogrel Bisulfate34suppressed
Escitalopram OxalateEscitalopram Oxalate34suppressed
Olmesartan MedoxomilOlmesartan Medoxomil33suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl32suppressed
FamotidineFamotidine32suppressed
Propranolol HclPropranolol Hcl32suppressed
HydrochlorothiazideHydrochlorothiazide30suppressed
Sertraline HclSertraline Hcl30suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog29suppressed
CarvedilolCarvedilol28suppressed
FurosemideFurosemide28suppressed
Citalopram HbrCitalopram Hydrobromide27suppressed
Alendronate SodiumAlendronate Sodium2611
BaclofenBaclofen26suppressed
LorazepamLorazepam26suppressed
MirtazapineMirtazapine25suppressed
Potassium ChloridePotassium Chloride24suppressed
IbuprofenIbuprofen23suppressed
OlanzapineOlanzapine23suppressed
Tizanidine HclTizanidine Hcl23suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol22suppressed
Bupropion Hcl SrBupropion Hcl21suppressed
EliquisApixaban20suppressed
Methylphenidate HclMethylphenidate Hcl20suppressed
Rosuvastatin CalciumRosuvastatin Calcium20suppressed
LoperamideLoperamide Hcl19suppressed
Varenicline TartrateVarenicline Tartrate19suppressed
Diclofenac SodiumDiclofenac Sodium18suppressed
LamotrigineLamotrigine18suppressed
Ventolin HfaAlbuterol Sulfate18suppressed
AllopurinolAllopurinol17suppressed
MounjaroTirzepatide17suppressed
Promethazine HclPromethazine Hcl17suppressed
Warfarin SodiumWarfarin Sodium17suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl16suppressed
Doxazosin MesylateDoxazosin Mesylate16suppressed
Hydromorphone HclHydromorphone Hcl16suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide16suppressed
Nortriptyline HclNortriptyline Hcl15suppressed
OzempicSemaglutide15suppressed
PrednisonePrednisone15suppressed
PregabalinPregabalin15suppressed
Procto-Med HcHydrocortisone15suppressed
AripiprazoleAripiprazole14suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium14suppressed
TorsemideTorsemide14suppressed
Zolpidem TartrateZolpidem Tartrate14suppressed
Fluticasone PropionateFluticasone Propionate13suppressed
Hydroxyzine PamoateHydroxyzine Pamoate13suppressed
RizatriptanRizatriptan Benzoate13suppressed
Spiriva HandihalerTiotropium Bromide13suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
Pioglitazone HclPioglitazone Hcl12suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl12suppressed
Oxybutynin Chloride ErOxybutynin Chloride11suppressed

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