Healthcare provider profile · identity verified

Erica Zak

Family Practice · PARK RIDGE, IL · NPI 1982165288

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 Calcium23046
Amlodipine BesylateAmlodipine Besylate12721
Levothyroxine SodiumLevothyroxine Sodium9617
Metoprolol TartrateMetoprolol Tartrate87suppressed
Losartan PotassiumLosartan Potassium8518
Tamsulosin HclTamsulosin Hcl84suppressed
Sertraline HclSertraline Hcl8015
LisinoprilLisinopril7417
BumetanideBumetanide72suppressed
EliquisApixaban55suppressed
FurosemideFurosemide53suppressed
GabapentinGabapentin53suppressed
OmeprazoleOmeprazole5114
Pantoprazole SodiumPantoprazole Sodium49suppressed
Potassium ChloridePotassium Chloride49suppressed
Donepezil HclDonepezil Hcl47suppressed
FinasterideFinasteride47suppressed
Memantine HclMemantine Hcl44suppressed
Trazodone HclTrazodone Hcl38suppressed
ClopidogrelClopidogrel Bisulfate35suppressed
Metoprolol SuccinateMetoprolol Succinate35suppressed
GlipizideGlipizide32suppressed
HydrochlorothiazideHydrochlorothiazide3211
Metformin HclMetformin Hcl3012
SimvastatinSimvastatin30suppressed
Warfarin SodiumWarfarin Sodium30suppressed
Amiodarone HclAmiodarone Hcl28suppressed
Propranolol HclPropranolol Hcl28suppressed
Bethanechol ChlorideBethanechol Chloride27suppressed
Flecainide AcetateFlecainide Acetate27suppressed
Alendronate SodiumAlendronate Sodium23suppressed
Enalapril MaleateEnalapril Maleate23suppressed
JardianceEmpagliflozin22suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide22suppressed
LevetiracetamLevetiracetam20suppressed
Quetiapine FumarateQuetiapine Fumarate20suppressed
SpironolactoneSpironolactone20suppressed
Hydralazine HclHydralazine Hcl19suppressed
LansoprazoleLansoprazole16suppressed
Rosuvastatin CalciumRosuvastatin Calcium16suppressed
ClonazepamClonazepam15suppressed
Escitalopram OxalateEscitalopram Oxalate15suppressed
Fludrocortisone AcetateFludrocortisone Acetate15suppressed
LidocaineLidocaine15suppressed
Albuterol Sulfate HfaAlbuterol Sulfate14suppressed
JanuviaSitagliptin Phosphate14suppressed
CarvedilolCarvedilol13suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13suppressed
Montelukast SodiumMontelukast Sodium13suppressed
Breo ElliptaFluticasone/Vilanterol12suppressed
Carbidopa-LevodopaCarbidopa/Levodopa12suppressed
AlprazolamAlprazolam11suppressed
AtenololAtenolol11suppressed
Diclofenac SodiumDiclofenac Sodium11suppressed

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