Healthcare provider profile · identity verified

Patrick S. Lay, MD

Internal Medicine · SKOKIE, IL · NPI 1639238405

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

Brand	Generic	Claims	Beneficiaries
Atorvastatin Calcium	Atorvastatin Calcium	797	237
Amlodipine Besylate	Amlodipine Besylate	548	159
Losartan Potassium	Losartan Potassium	457	130
Metformin Hcl	Metformin Hcl	348	100
Levothyroxine Sodium	Levothyroxine Sodium	191	54
Tamsulosin Hcl	Tamsulosin Hcl	181	59
Simvastatin	Simvastatin	177	49
Metoprolol Succinate	Metoprolol Succinate	162	53
Lisinopril	Lisinopril	151	48
Omeprazole	Omeprazole	129	41
Hydrochlorothiazide	Hydrochlorothiazide	112	38
Rosuvastatin Calcium	Rosuvastatin Calcium	84	26
Allopurinol	Allopurinol	83	26
Atenolol	Atenolol	70	18
Carvedilol	Carvedilol	70	17
Pravastatin Sodium	Pravastatin Sodium	70	17
Metoprolol Tartrate	Metoprolol Tartrate	69	22
Alprazolam	Alprazolam	66	19
Pantoprazole Sodium	Pantoprazole Sodium	66	19
Glimepiride	Glimepiride	63	15
Spironolactone	Spironolactone	59	19
Furosemide	Furosemide	56	23
Warfarin Sodium	Warfarin Sodium	56	15
Finasteride	Finasteride	53	15
Eliquis	Apixaban	50	20
Pioglitazone Hcl	Pioglitazone Hcl	50	14
Gabapentin	Gabapentin	49	22
Farxiga	Dapagliflozin Propanediol	48	12
Ramipril	Ramipril	47	14
Potassium Chloride	Potassium Chloride	43	11
Clopidogrel	Clopidogrel Bisulfate	41	14
Fluticasone Propionate	Fluticasone Propionate	40	16
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	40	12
Albuterol Sulfate Hfa	Albuterol Sulfate	39	16
Benazepril Hcl	Benazepril Hcl	38	suppressed
Irbesartan	Irbesartan	37	11
Metformin Hcl Er	Metformin Hcl	37	18
Zolpidem Tartrate	Zolpidem Tartrate	37	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	35	suppressed
Sertraline Hcl	Sertraline Hcl	35	13
Chlorthalidone	Chlorthalidone	33	suppressed
Januvia	Sitagliptin Phosphate	31	suppressed
Jardiance	Empagliflozin	31	suppressed
Glipizide Er	Glipizide	29	suppressed
Enalapril Maleate	Enalapril Maleate	28	suppressed
Latanoprost	Latanoprost	28	suppressed
Montelukast Sodium	Montelukast Sodium	28	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	27	suppressed
Glipizide	Glipizide	27	suppressed
Valsartan	Valsartan	27	suppressed
Dropsafe Prep Pads	Alcohol Antiseptic Pads	24	suppressed
Diclofenac Sodium	Diclofenac Sodium	22	11
Alendronate Sodium	Alendronate Sodium	21	suppressed
Donepezil Hcl	Donepezil Hcl	21	suppressed
Hydrocortisone	Hydrocortisone	21	13
Trazodone Hcl	Trazodone Hcl	20	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	20	14
Oxybutynin Chloride Er	Oxybutynin Chloride	18	suppressed
Tramadol Hcl	Tramadol Hcl	18	12
Breo Ellipta	Fluticasone/Vilanterol	16	suppressed
Citalopram Hbr	Citalopram Hydrobromide	16	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	16	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	16	suppressed
Lovastatin	Lovastatin	16	suppressed
Meclizine Hcl	Meclizine Hcl	16	suppressed
Mirtazapine	Mirtazapine	16	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	15	suppressed
Lorazepam	Lorazepam	15	suppressed
Ozempic	Semaglutide	15	suppressed
Bupropion Xl	Bupropion Hcl	14	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	14	suppressed
Nifedipine Er	Nifedipine	14	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	13	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	13	suppressed
Clonazepam	Clonazepam	13	suppressed
Famotidine	Famotidine	13	suppressed
Lansoprazole	Lansoprazole	13	suppressed
Repaglinide	Repaglinide	13	suppressed
Synthroid	Levothyroxine Sodium	13	suppressed
Glyburide	Glyburide	12	suppressed
Levetiracetam	Levetiracetam	12	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	12	suppressed
Xarelto	Rivaroxaban	12	suppressed
Baclofen	Baclofen	11	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	11	suppressed
Hydralazine Hcl	Hydralazine Hcl	11	suppressed
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	11	suppressed
Klor-Con M20	Potassium Chloride	11	suppressed
Lidocaine	Lidocaine	11	suppressed

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.

Year	General Payments	Main payer	Explicit products	Company overlaps	Part D coverage
2025	—	—	—	—	—
2024	—	—	—	—	Complete

Questions to ask

Questions you could discuss with your doctor

Are there reasonable alternatives I should understand when we discuss treatment options?
How should I interpret the industry-payment records shown here in the context of my care?

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.

Loaded source releases

Dataset	Year	Publication	Source
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