Healthcare provider profile · identity verified

Jack C Olson, M.D.

Internal Medicine · CHICAGO, IL · NPI 1417906637

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 Calcium26777
Amlodipine BesylateAmlodipine Besylate19145
LisinoprilLisinopril12226
Metoprolol SuccinateMetoprolol Succinate10218
EliquisApixaban10021
Levothyroxine SodiumLevothyroxine Sodium9825
CarvedilolCarvedilol8922
Pantoprazole SodiumPantoprazole Sodium7822
GabapentinGabapentin7616
FurosemideFurosemide7316
Nifedipine ErNifedipine6018
Losartan PotassiumLosartan Potassium5919
Fluticasone PropionateFluticasone Propionate5813
OmeprazoleOmeprazole5815
Potassium ChloridePotassium Chloride5714
Metformin HclMetformin Hcl5017
Tamsulosin HclTamsulosin Hcl4917
HydrochlorothiazideHydrochlorothiazide4716
Escitalopram OxalateEscitalopram Oxalate4313
Montelukast SodiumMontelukast Sodium43suppressed
Duloxetine HclDuloxetine Hcl42suppressed
Sertraline HclSertraline Hcl3911
Donepezil HclDonepezil Hcl37suppressed
MirtazapineMirtazapine3712
AllopurinolAllopurinol3511
FamotidineFamotidine34suppressed
Metoprolol TartrateMetoprolol Tartrate34suppressed
Albuterol Sulfate HfaAlbuterol Sulfate3214
Rosuvastatin CalciumRosuvastatin Calcium32suppressed
Trazodone HclTrazodone Hcl32suppressed
LevetiracetamLevetiracetam30suppressed
Metformin Hcl ErMetformin Hcl2811
FinasterideFinasteride27suppressed
MyrbetriqMirabegron25suppressed
Diclofenac SodiumDiclofenac Sodium24suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium22suppressed
VascepaIcosapent Ethyl21suppressed
BaclofenBaclofen20suppressed
Enalapril MaleateEnalapril Maleate19suppressed
Brimonidine TartrateBrimonidine Tartrate18suppressed
ClopidogrelClopidogrel Bisulfate18suppressed
LatanoprostLatanoprost18suppressed
Tramadol HclTramadol Hcl18suppressed
JanuviaSitagliptin Phosphate17suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid17suppressed
AlprazolamAlprazolam16suppressed
Hydralazine HclHydralazine Hcl16suppressed
Alendronate SodiumAlendronate Sodium15suppressed
CalcitriolCalcitriol15suppressed
JardianceEmpagliflozin15suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim15suppressed
ValsartanValsartan15suppressed
AcyclovirAcyclovir14suppressed
Bupropion XlBupropion Hcl14suppressed
GlipizideGlipizide14suppressed
Memantine HclMemantine Hcl14suppressed
Nortriptyline HclNortriptyline Hcl14suppressed
SpironolactoneSpironolactone14suppressed
BumetanideBumetanide13suppressed
OzempicSemaglutide13suppressed
Citalopram HbrCitalopram Hydrobromide12suppressed
Klor-Con M20Potassium Chloride12suppressed
MeloxicamMeloxicam12suppressed
SimvastatinSimvastatin11suppressed

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