Healthcare provider profile · identity verified

John C Cook, D.O.

Family Practice · BARBERTON, OH · NPI 1467443580

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
Levothyroxine Sodium	Levothyroxine Sodium	523	148
Simvastatin	Simvastatin	481	131
Amlodipine Besylate	Amlodipine Besylate	322	98
Atorvastatin Calcium	Atorvastatin Calcium	301	90
Metoprolol Tartrate	Metoprolol Tartrate	287	84
Tamsulosin Hcl	Tamsulosin Hcl	283	89
Lisinopril	Lisinopril	273	82
Hydrochlorothiazide	Hydrochlorothiazide	255	76
Omeprazole	Omeprazole	237	70
Metoprolol Succinate	Metoprolol Succinate	209	66
Enalapril Maleate	Enalapril Maleate	205	57
Metformin Hcl	Metformin Hcl	204	66
Rosuvastatin Calcium	Rosuvastatin Calcium	181	62
Pantoprazole Sodium	Pantoprazole Sodium	172	51
Finasteride	Finasteride	141	43
Gabapentin	Gabapentin	138	42
Pravastatin Sodium	Pravastatin Sodium	137	39
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	125	35
Fluticasone Propionate	Fluticasone Propionate	118	48
Eliquis	Apixaban	112	31
Sertraline Hcl	Sertraline Hcl	111	29
Losartan Potassium	Losartan Potassium	105	31
Jardiance	Empagliflozin	101	31
Alendronate Sodium	Alendronate Sodium	95	25
Allopurinol	Allopurinol	93	29
Celecoxib	Celecoxib	92	30
Synthroid	Levothyroxine Sodium	84	24
Duloxetine Hcl	Duloxetine Hcl	83	22
Lorazepam	Lorazepam	73	23
Carvedilol	Carvedilol	69	19
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	68	24
Furosemide	Furosemide	65	24
Clopidogrel	Clopidogrel Bisulfate	64	21
Montelukast Sodium	Montelukast Sodium	60	18
Albuterol Sulfate Hfa	Albuterol Sulfate	58	29
Ezetimibe	Ezetimibe	58	20
Prednisone	Prednisone	58	54
Trulicity	Dulaglutide	58	13
Trazodone Hcl	Trazodone Hcl	57	17
Donepezil Hcl	Donepezil Hcl	56	17
Lovastatin	Lovastatin	48	13
Doxazosin Mesylate	Doxazosin Mesylate	44	11
Alprazolam	Alprazolam	42	suppressed
Paroxetine Hcl	Paroxetine Hcl	41	11
Spironolactone	Spironolactone	41	11
Chlorthalidone	Chlorthalidone	40	suppressed
Metformin Hcl Er	Metformin Hcl	40	13
Farxiga	Dapagliflozin Propanediol	39	suppressed
Glimepiride	Glimepiride	37	12
Meloxicam	Meloxicam	37	12
Verapamil Er	Verapamil Hcl	37	suppressed
Citalopram Hbr	Citalopram Hydrobromide	36	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	36	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	35	15
Atenolol	Atenolol	34	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	33	suppressed
Clonidine Hcl	Clonidine Hcl	32	11
Potassium Chloride	Potassium Chloride	32	13
Ropinirole Hcl	Ropinirole Hcl	32	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	30	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	30	suppressed
Mirtazapine	Mirtazapine	30	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	29	suppressed
Semglee (Yfgn) Pen	Insulin Glargine-Yfgn	29	suppressed
Diclofenac Sodium	Diclofenac Sodium	28	suppressed
Famotidine	Famotidine	26	suppressed
Fenofibrate	Fenofibrate	26	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	26	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	25	24
Hydralazine Hcl	Hydralazine Hcl	25	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	23	16
Livalo	Pitavastatin Calcium	23	suppressed
Tramadol Hcl	Tramadol Hcl	23	suppressed
Valacyclovir	Valacyclovir Hcl	23	suppressed
Aripiprazole	Aripiprazole	22	suppressed
Memantine Hcl	Memantine Hcl	22	suppressed
Novolog Flexpen	Insulin Aspart	22	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	22	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	21	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	21	suppressed
Benazepril Hcl	Benazepril Hcl	20	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	20	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	20	17
Breo Ellipta	Fluticasone/Vilanterol	19	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	19	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	19	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	19	suppressed
Buspirone Hcl	Buspirone Hcl	18	suppressed
Premarin	Estrogens, Conjugated	18	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	18	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	17	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	17	suppressed
Symbicort	Budesonide/Formoterol Fumarate	17	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	17	12
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	16	suppressed
Ipratropium Bromide	Ipratropium Bromide	16	suppressed
Novolog Mix 70-30 Flexpen	Insulin Aspart Prot/Insuln Asp	16	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	16	suppressed
Enalapril-Hydrochlorothiazide	Enalapril/Hydrochlorothiazide	15	suppressed
Humalog Kwikpen U-100	Insulin Lispro	15	suppressed
Myrbetriq	Mirabegron	15	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	15	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	14	suppressed
Amoxicillin	Amoxicillin	14	12
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	14	suppressed
Lansoprazole	Lansoprazole	14	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	14	suppressed
Vascepa	Icosapent Ethyl	14	suppressed
Warfarin Sodium	Warfarin Sodium	14	suppressed
Clonazepam	Clonazepam	13	suppressed
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	13	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	13	suppressed
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	13	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	13	suppressed
Torsemide	Torsemide	13	suppressed
Droplet Pen Needle	Pen Needle, Diabetic	12	suppressed
Ezetimibe-Simvastatin	Ezetimibe/Simvastatin	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	suppressed
Teriparatide	Teriparatide	12	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	11	suppressed
Levetiracetam	Levetiracetam	11	suppressed
Tresiba Flextouch U-200	Insulin Degludec	11	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	11	suppressed
Xarelto	Rivaroxaban	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