Healthcare provider profile · identity verified

John O'Connell, DO

Geriatric Medicine · ROLLING MEADOWS, IL · NPI 1588612626

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	356	86
Levothyroxine Sodium	Levothyroxine Sodium	325	61
Furosemide	Furosemide	278	45
Amlodipine Besylate	Amlodipine Besylate	256	51
Metoprolol Tartrate	Metoprolol Tartrate	251	48
Eliquis	Apixaban	238	41
Gabapentin	Gabapentin	234	46
Potassium Chloride	Potassium Chloride	226	47
Tamsulosin Hcl	Tamsulosin Hcl	157	28
Losartan Potassium	Losartan Potassium	154	33
Donepezil Hcl	Donepezil Hcl	152	30
Metformin Hcl	Metformin Hcl	152	22
Metoprolol Succinate	Metoprolol Succinate	151	35
Pantoprazole Sodium	Pantoprazole Sodium	150	30
Lisinopril	Lisinopril	149	29
Omeprazole	Omeprazole	145	35
Clopidogrel	Clopidogrel Bisulfate	143	28
Duloxetine Hcl	Duloxetine Hcl	134	16
Memantine Hcl	Memantine Hcl	121	27
Sertraline Hcl	Sertraline Hcl	120	27
Warfarin Sodium	Warfarin Sodium	113	13
Famotidine	Famotidine	104	18
Montelukast Sodium	Montelukast Sodium	95	11
Xarelto	Rivaroxaban	95	12
Carvedilol	Carvedilol	94	29
Trazodone Hcl	Trazodone Hcl	93	22
Carbidopa-Levodopa	Carbidopa/Levodopa	92	14
Allopurinol	Allopurinol	89	16
Escitalopram Oxalate	Escitalopram Oxalate	88	20
Finasteride	Finasteride	79	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	79	22
Bumetanide	Bumetanide	76	21
Quetiapine Fumarate	Quetiapine Fumarate	75	18
Baclofen	Baclofen	67	suppressed
Pravastatin Sodium	Pravastatin Sodium	67	11
Alendronate Sodium	Alendronate Sodium	62	suppressed
Glipizide	Glipizide	60	suppressed
Hydralazine Hcl	Hydralazine Hcl	60	15
Spironolactone	Spironolactone	59	15
Amitriptyline Hcl	Amitriptyline Hcl	56	suppressed
Latanoprost	Latanoprost	56	15
Lorazepam	Lorazepam	56	suppressed
Torsemide	Torsemide	56	suppressed
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	53	16
Nebivolol Hcl	Nebivolol Hcl	52	suppressed
Simvastatin	Simvastatin	51	17
Fluoxetine Hcl	Fluoxetine Hcl	48	suppressed
Clonazepam	Clonazepam	45	suppressed
Pentoxifylline	Pentoxifylline	44	suppressed
Oseltamivir Phosphate	Oseltamivir Phosphate	43	41
Primidone	Primidone	43	suppressed
Divalproex Sodium	Divalproex Sodium	42	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	42	suppressed
Tramadol Hcl	Tramadol Hcl	42	21
Jardiance	Empagliflozin	39	11
Mirtazapine	Mirtazapine	39	13
Oxybutynin Chloride Er	Oxybutynin Chloride	39	11
Nystatin	Nystatin	38	20
Levetiracetam	Levetiracetam	37	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	37	suppressed
Januvia	Sitagliptin Phosphate	34	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	33	suppressed
Olanzapine	Olanzapine	33	suppressed
Dorzolamide Hcl	Dorzolamide Hcl	32	suppressed
Midodrine Hcl	Midodrine Hcl	32	14
Ezetimibe	Ezetimibe	31	suppressed
Azithromycin	Azithromycin	30	20
Hydrochlorothiazide	Hydrochlorothiazide	30	suppressed
Pregabalin	Pregabalin	30	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	30	suppressed
Klor-Con M20	Potassium Chloride	29	suppressed
Ondansetron Hcl	Ondansetron Hcl	29	16
Permethrin	Permethrin	29	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	29	suppressed
Amiodarone Hcl	Amiodarone Hcl	26	suppressed
Levofloxacin	Levofloxacin	26	13
Prednisone	Prednisone	26	14
Ciprofloxacin Hcl	Ciprofloxacin Hcl	25	16
Constulose	Lactulose	24	suppressed
Tacrolimus	Tacrolimus	24	suppressed
Terazosin Hcl	Terazosin Hcl	24	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	24	suppressed
Citalopram Hbr	Citalopram Hydrobromide	23	suppressed
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	22	suppressed
Fluticasone Propionate	Fluticasone Propionate	22	11
Amantadine	Amantadine Hcl	21	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	21	14
Alprazolam	Alprazolam	20	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	20	12
Brimonidine Tartrate	Brimonidine Tartrate	20	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	20	suppressed
Carbamazepine	Carbamazepine	19	suppressed
Trospium Chloride	Trospium Chloride	19	suppressed
Albuterol Sulfate	Albuterol Sulfate	18	suppressed
Breo Ellipta	Fluticasone/Vilanterol	18	suppressed
Hydrocortisone	Hydrocortisone	18	suppressed
Risperidone	Risperidone	18	suppressed
Clonidine Hcl	Clonidine Hcl	17	suppressed
Memantine Hcl Er	Memantine Hcl	17	suppressed
Metolazone	Metolazone	17	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	16	suppressed
Cephalexin	Cephalexin	15	12
Fenofibrate	Fenofibrate	15	suppressed
Myrbetriq	Mirabegron	15	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	14	suppressed
Bupropion Hcl Sr	Bupropion Hcl	14	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	14	suppressed
Digoxin	Digoxin	14	suppressed
Divalproex Sodium Er	Divalproex Sodium	14	suppressed
Fluconazole	Fluconazole	14	suppressed
Ipratropium Bromide	Ipratropium Bromide	14	suppressed
Nystop	Nystatin	14	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	13	suppressed
Bupropion Xl	Bupropion Hcl	13	suppressed
Abilify Maintena	Aripiprazole	12	suppressed
Aripiprazole	Aripiprazole	12	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	12	suppressed
Diltiazem 24hr Er (La)	Diltiazem Hcl	12	suppressed
Galantamine Hbr	Galantamine Hbr	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	11
Ondansetron Odt	Ondansetron	12	suppressed
Rocklatan	Netarsudil Mesylat/Latanoprost	12	suppressed
Sodium Chloride	0.9 % Sodium Chloride	12	suppressed
Budesonide	Budesonide	11	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	11	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Nitroglycerin Patch	Nitroglycerin	11	suppressed
Selegiline Hcl	Selegiline Hcl	11	suppressed
Solifenacin Succinate	Solifenacin Succinate	11	suppressed
Teriflunomide	Teriflunomide	11	suppressed
Ursodiol	Ursodiol	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