Healthcare provider profile · identity verified

Jason Nathaniel Macklis, M.D.

Hematology-Oncology · PARK RIDGE, IL · NPI 1003136458

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
EliquisApixaban14621
Prochlorperazine MaleateProchlorperazine Maleate11067
DexamethasoneDexamethasone10160
TagrissoOsimertinib Mesylate80suppressed
Levothyroxine SodiumLevothyroxine Sodium7016
PrednisonePrednisone6623
Megestrol AcetateMegestrol Acetate4312
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen3818
AlecensaAlectinib Hcl37suppressed
Tramadol HclTramadol Hcl3521
MethylprednisoloneMethylprednisolone2824
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2621
GabapentinGabapentin26suppressed
Ondansetron HclOndansetron Hcl2616
AlprazolamAlprazolam2418
AzithromycinAzithromycin2318
Lidocaine Hcl ViscousLidocaine Hcl22suppressed
MirtazapineMirtazapine22suppressed
LevofloxacinLevofloxacin1815
OmeprazoleOmeprazole18suppressed
Pantoprazole SodiumPantoprazole Sodium17suppressed
Ondansetron OdtOndansetron1612
Potassium ChloridePotassium Chloride16suppressed
Triamcinolone AcetonideTriamcinolone Acetonide1612
Albuterol Sulfate HfaAlbuterol Sulfate14suppressed
XareltoRivaroxaban14suppressed
FluconazoleFluconazole13suppressed
LumakrasSotorasib13suppressed
Oxycodone HclOxycodone Hcl13suppressed
RevlimidLenalidomide13suppressed
TabrectaCapmatinib Hydrochloride13suppressed
AnastrozoleAnastrozole12suppressed
BrukinsaZanubrutinib12suppressed
LenalidomideLenalidomide12suppressed
OlanzapineOlanzapine12suppressed
Abiraterone AcetateAbiraterone Acetate11suppressed
LorbrenaLorlatinib11suppressed

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