Healthcare provider profile · identity verified

Jon A Arnason, MD

Rheumatology · MADISON, WI · NPI 1265760433

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
MethotrexateMethotrexate Sodium611162
Hydroxychloroquine SulfateHydroxychloroquine Sulfate473113
PrednisonePrednisone472107
ColchicineColchicine20147
Humira(Cf) PenAdalimumab9111
LeflunomideLeflunomide9127
Mycophenolate MofetilMycophenolate Mofetil9020
NabumetoneNabumetone8922
AzathioprineAzathioprine7720
Folic AcidFolic Acid7021
GabapentinGabapentin6013
CelecoxibCelecoxib5114
SulfasalazineSulfasalazine5113
AllopurinolAllopurinol5016
Sulfasalazine DrSulfasalazine4811
Tramadol HclTramadol Hcl42suppressed
ActemraTocilizumab34suppressed
EnbrelEtanercept34suppressed
Cevimeline HclCevimeline Hcl29suppressed
Humira PenAdalimumab29suppressed
Taltz AutoinjectorIxekizumab29suppressed
Enbrel SureclickEtanercept26suppressed
MeloxicamMeloxicam24suppressed
OrenciaAbatacept24suppressed
Alendronate SodiumAlendronate Sodium23suppressed
RinvoqUpadacitinib22suppressed
Methotrexate SodiumMethotrexate Sodium/Pf21suppressed
NaproxenNaproxen21suppressed
PregabalinPregabalin18suppressed
Minocycline HclMinocycline Hcl17suppressed
MitigareColchicine17suppressed
Cimzia (2 Pack)Certolizumab Pegol16suppressed
Mycophenolic AcidMycophenolate Sodium16suppressed
Cosentyx Sensoready (2 Pens)Secukinumab14suppressed
IbuprofenIbuprofen14suppressed
Amlodipine BesylateAmlodipine Besylate13suppressed
Cosentyx SyringeSecukinumab13suppressed
Humira(Cf)Adalimumab13suppressed
OtezlaApremilast13suppressed
KineretAnakinra12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
Taltz SyringeIxekizumab12suppressed
Codeine SulfateCodeine Sulfate11suppressed
IbuIbuprofen11suppressed

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