Healthcare provider profile · identity verified

Stephen John Chaffee, DO

Allopathic & Osteopathic Physicians|Family Medicine · MCMINNVILLE, OR · NPI 1487647269

Profile state: payments and partd 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

CMS Open Payments records show Stephen John Chaffee, DO received $38.15 in general payments during 2025 across 2 reported records.

GlaxoSmithKline, LLC. accounted for 60.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 4 associated products.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Trelegy Ellipta by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$38.15

2 reported records · 2 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $23.0460.4%12025
Amgen Inc. Unresolved — no canonical attribution shown $15.1139.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$38.152

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
BEXSERO
Normalized: bexsero
Biological GlaxoSmithKline, LLC. $23.04 1 2025
Source payment records
PEDIARIX
Normalized: pediarix
Biological GlaxoSmithKline, LLC. $23.04 1 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $15.11 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $15.11 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS

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 Calcium407116
Amlodipine BesylateAmlodipine Besylate373103
Levothyroxine SodiumLevothyroxine Sodium33189
Losartan PotassiumLosartan Potassium27178
LisinoprilLisinopril25575
Rosuvastatin CalciumRosuvastatin Calcium22465
OmeprazoleOmeprazole18758
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen17236
Metoprolol SuccinateMetoprolol Succinate14847
Tamsulosin HclTamsulosin Hcl14549
GabapentinGabapentin14143
CelecoxibCelecoxib13042
AllopurinolAllopurinol12434
FurosemideFurosemide12139
Albuterol Sulfate HfaAlbuterol Sulfate11645
Escitalopram OxalateEscitalopram Oxalate11633
Metformin HclMetformin Hcl10828
Pantoprazole SodiumPantoprazole Sodium10433
AlprazolamAlprazolam10317
HydrochlorothiazideHydrochlorothiazide9732
Potassium ChloridePotassium Chloride9626
Metoprolol TartrateMetoprolol Tartrate8024
Metformin Hcl ErMetformin Hcl7725
Sertraline HclSertraline Hcl7319
Tramadol HclTramadol Hcl6716
Trazodone HclTrazodone Hcl6522
Zolpidem TartrateZolpidem Tartrate6212
ClonazepamClonazepam54suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5316
EliquisApixaban5016
SimvastatinSimvastatin4813
Tizanidine HclTizanidine Hcl4514
CarvedilolCarvedilol4412
Alendronate SodiumAlendronate Sodium4312
LovastatinLovastatin4313
ClopidogrelClopidogrel Bisulfate4112
Oxycodone HclOxycodone Hcl40suppressed
OzempicSemaglutide39suppressed
FamotidineFamotidine3811
Montelukast SodiumMontelukast Sodium3712
Duloxetine HclDuloxetine Hcl36suppressed
Pravastatin SodiumPravastatin Sodium3514
XareltoRivaroxaban3511
Ciprofloxacin HclCiprofloxacin Hcl3125
LorazepamLorazepam31suppressed
Bupropion XlBupropion Hcl30suppressed
Fluticasone PropionateFluticasone Propionate29suppressed
Glipizide ErGlipizide29suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog29suppressed
Ondansetron HclOndansetron Hcl29suppressed
PregabalinPregabalin29suppressed
SynthroidLevothyroxine Sodium29suppressed
EstradiolEstradiol2813
Fluticasone-SalmeterolFluticasone Propion/Salmeterol28suppressed
PrednisonePrednisone2817
Cyclobenzaprine HclCyclobenzaprine Hcl2712
Triamcinolone AcetonideTriamcinolone Acetonide2719
FinasterideFinasteride25suppressed
Fluoxetine HclFluoxetine Hcl25suppressed
Citalopram HbrCitalopram Hydrobromide24suppressed
SpironolactoneSpironolactone24suppressed
TeriparatideTeriparatide24suppressed
Testosterone CypionateTestosterone Cypionate23suppressed
Warfarin SodiumWarfarin Sodium23suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide22suppressed
Oxybutynin Chloride ErOxybutynin Chloride22suppressed
Paroxetine HclParoxetine Hcl22suppressed
JardianceEmpagliflozin21suppressed
Oxybutynin ChlorideOxybutynin Chloride21suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid21suppressed
Quetiapine FumarateQuetiapine Fumarate20suppressed
Arnuity ElliptaFluticasone Furoate19suppressed
AtenololAtenolol19suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl19suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter18suppressed
Venlafaxine Hcl ErVenlafaxine Hcl18suppressed
AzithromycinAzithromycin1717
DiazepamDiazepam17suppressed
Sumatriptan SuccinateSumatriptan Succinate17suppressed
Bupropion Hcl SrBupropion Hcl16suppressed
MeloxicamMeloxicam16suppressed
CephalexinCephalexin1514
RizatriptanRizatriptan Benzoate15suppressed
HydrocortisoneHydrocortisone14suppressed
Morphine Sulfate ErMorphine Sulfate14suppressed
Nifedipine ErNifedipine14suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen14suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl14suppressed
Clonidine HclClonidine Hcl13suppressed
IbuprofenIbuprofen13suppressed
MirtazapineMirtazapine13suppressed
TrulicityDulaglutide13suppressed
AcyclovirAcyclovir12suppressed
Clobetasol PropionateClobetasol Propionate12suppressed
ColchicineColchicine12suppressed
EzetimibeEzetimibe12suppressed
GemfibrozilGemfibrozil12suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav11suppressed
BreynaBudesonide/Formoterol Fumarate11suppressed
Carbidopa-LevodopaCarbidopa/Levodopa11suppressed
DutasterideDutasteride11suppressed
GlimepirideGlimepiride11suppressed
GlipizideGlipizide11suppressed
MetronidazoleMetronidazole11suppressed
MupirocinMupirocin11suppressed
Ropinirole HclRopinirole Hcl11suppressed
Solifenacin SuccinateSolifenacin Succinate11suppressed
Verapamil ErVerapamil 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 $38.15 · 2 records GlaxoSmithKline, LLC. BEXSERO, EVENITY, PEDIARIX, PROLIA 1
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