Healthcare provider profile · identity verified

Michael L Greising, MD

Internal Medicine · PARK RIDGE, IL · NPI 1629071329

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	612	177
Amlodipine Besylate	Amlodipine Besylate	274	85
Lisinopril	Lisinopril	273	83
Levothyroxine Sodium	Levothyroxine Sodium	263	71
Rosuvastatin Calcium	Rosuvastatin Calcium	221	68
Metformin Hcl	Metformin Hcl	208	61
Metoprolol Succinate	Metoprolol Succinate	198	65
Hydrochlorothiazide	Hydrochlorothiazide	173	59
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	129	42
Furosemide	Furosemide	128	35
Omeprazole	Omeprazole	128	41
Tamsulosin Hcl	Tamsulosin Hcl	107	33
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	104	31
Losartan Potassium	Losartan Potassium	102	38
Tramadol Hcl	Tramadol Hcl	102	33
Eliquis	Apixaban	97	20
Pantoprazole Sodium	Pantoprazole Sodium	97	28
Metoprolol Tartrate	Metoprolol Tartrate	96	36
Allopurinol	Allopurinol	94	29
Jardiance	Empagliflozin	93	22
Gabapentin	Gabapentin	92	28
Simvastatin	Simvastatin	89	28
Alprazolam	Alprazolam	83	19
Metformin Hcl Er	Metformin Hcl	81	22
Trazodone Hcl	Trazodone Hcl	77	16
Clonazepam	Clonazepam	72	14
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	67	23
Warfarin Sodium	Warfarin Sodium	66	20
Clopidogrel	Clopidogrel Bisulfate	64	22
Prednisone	Prednisone	61	36
Montelukast Sodium	Montelukast Sodium	59	12
Sertraline Hcl	Sertraline Hcl	58	15
Meloxicam	Meloxicam	57	15
Zolpidem Tartrate	Zolpidem Tartrate	57	11
Donepezil Hcl	Donepezil Hcl	56	13
Ezetimibe	Ezetimibe	54	16
Escitalopram Oxalate	Escitalopram Oxalate	52	13
Duloxetine Hcl	Duloxetine Hcl	50	18
Xarelto	Rivaroxaban	49	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	48	12
Lorazepam	Lorazepam	47	13
Azithromycin	Azithromycin	43	38
Fluticasone Propionate	Fluticasone Propionate	42	16
Albuterol Sulfate Hfa	Albuterol Sulfate	41	17
Amoxicillin	Amoxicillin	41	36
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	41	11
Enalapril Maleate	Enalapril Maleate	39	suppressed
Carvedilol	Carvedilol	37	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	37	27
Glimepiride	Glimepiride	35	12
Ozempic	Semaglutide	34	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	33	15
Pioglitazone Hcl	Pioglitazone Hcl	33	suppressed
Pravastatin Sodium	Pravastatin Sodium	33	14
Potassium Chloride	Potassium Chloride	32	12
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	32	27
Famotidine	Famotidine	31	13
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	30	suppressed
Alendronate Sodium	Alendronate Sodium	29	suppressed
Rybelsus	Semaglutide	29	suppressed
Spironolactone	Spironolactone	29	suppressed
Olanzapine	Olanzapine	27	suppressed
Propranolol Hcl Er	Propranolol Hcl	27	suppressed
Synthroid	Levothyroxine Sodium	27	suppressed
Ibuprofen	Ibuprofen	25	12
Quetiapine Fumarate	Quetiapine Fumarate	25	suppressed
Amiodarone Hcl	Amiodarone Hcl	24	suppressed
Oxcarbazepine	Oxcarbazepine	24	suppressed
Benazepril Hcl	Benazepril Hcl	23	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	22	suppressed
Benztropine Mesylate	Benztropine Mesylate	21	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	21	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	21	21
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	20	suppressed
Symbicort	Budesonide/Formoterol Fumarate	20	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	19	suppressed
Meclizine Hcl	Meclizine Hcl	19	16
Propranolol Hcl	Propranolol Hcl	19	suppressed
Topiramate	Topiramate	19	suppressed
Valsartan	Valsartan	19	suppressed
Citalopram Hbr	Citalopram Hydrobromide	17	suppressed
Fenofibrate	Fenofibrate	17	suppressed
Memantine Hcl	Memantine Hcl	17	suppressed
Telmisartan	Telmisartan	17	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	16	suppressed
Bumetanide	Bumetanide	16	suppressed
Bupropion Xl	Bupropion Hcl	16	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	16	14
Farxiga	Dapagliflozin Propanediol	16	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	15	suppressed
Linzess	Linaclotide	15	suppressed
Mounjaro	Tirzepatide	15	suppressed
Breo Ellipta	Fluticasone/Vilanterol	14	suppressed
Carbamazepine Er	Carbamazepine	14	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	14	suppressed
Finasteride	Finasteride	14	suppressed
Glipizide	Glipizide	14	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	14	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	14	suppressed
Trulicity	Dulaglutide	14	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	13	suppressed
Diazepam	Diazepam	13	suppressed
Digoxin	Digoxin	13	suppressed
Incruse Ellipta	Umeclidinium Bromide	13	suppressed
Irbesartan	Irbesartan	13	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	13	suppressed
Mirtazapine	Mirtazapine	13	suppressed
Nifedipine Er	Nifedipine	13	suppressed
Paroxetine Hcl	Paroxetine Hcl	13	suppressed
Pregabalin	Pregabalin	13	suppressed
Risperidone	Risperidone	13	suppressed
Solifenacin Succinate	Solifenacin Succinate	13	suppressed
Tizanidine Hcl	Tizanidine Hcl	13	suppressed
Baclofen	Baclofen	12	suppressed
Clonidine Hcl	Clonidine Hcl	12	suppressed
Ipratropium Bromide	Ipratropium Bromide	12	suppressed
Lacosamide	Lacosamide	12	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	12	suppressed
Telmisartan-Hydrochlorothiazid	Telmisartan/Hydrochlorothiazid	12	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	11	11
Chlorthalidone	Chlorthalidone	11	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	11	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	11	suppressed
Dutasteride	Dutasteride	11	suppressed
Levetiracetam	Levetiracetam	11	suppressed
Lovastatin	Lovastatin	11	suppressed
Midodrine Hcl	Midodrine Hcl	11	suppressed
Temazepam	Temazepam	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