Healthcare provider profile · identity verified

William J Kozak, MD

Family Practice · CONNELLSVILLE, PA · NPI 1912908914

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
Pantoprazole Sodium	Pantoprazole Sodium	553	150
Levothyroxine Sodium	Levothyroxine Sodium	544	129
Montelukast Sodium	Montelukast Sodium	495	153
Furosemide	Furosemide	479	141
Dexamethasone	Dexamethasone	451	240
Albuterol Sulfate Hfa	Albuterol Sulfate	445	166
Rosuvastatin Calcium	Rosuvastatin Calcium	442	133
Potassium Chloride	Potassium Chloride	416	116
Atorvastatin Calcium	Atorvastatin Calcium	412	115
Lisinopril	Lisinopril	385	106
Metformin Hcl	Metformin Hcl	341	91
Gabapentin	Gabapentin	319	74
Azithromycin	Azithromycin	310	196
Prednisone	Prednisone	305	179
Atenolol	Atenolol	285	76
Baclofen	Baclofen	283	88
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	281	102
Diclofenac Sodium	Diclofenac Sodium	263	100
Amlodipine Besylate	Amlodipine Besylate	256	71
Losartan Potassium	Losartan Potassium	256	79
Tamsulosin Hcl	Tamsulosin Hcl	228	64
Sertraline Hcl	Sertraline Hcl	221	77
Omeprazole	Omeprazole	217	50
Duloxetine Hcl	Duloxetine Hcl	206	53
Eliquis	Apixaban	184	39
Metoprolol Succinate	Metoprolol Succinate	177	44
Metoprolol Tartrate	Metoprolol Tartrate	167	41
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	163	43
Meloxicam	Meloxicam	154	43
Quetiapine Fumarate	Quetiapine Fumarate	145	24
Ozempic	Semaglutide	138	41
Clopidogrel	Clopidogrel Bisulfate	137	39
Mirtazapine	Mirtazapine	135	31
Finasteride	Finasteride	128	30
Simvastatin	Simvastatin	126	36
Trazodone Hcl	Trazodone Hcl	125	38
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	122	99
Pravastatin Sodium	Pravastatin Sodium	119	38
Risperidone	Risperidone	119	18
Citalopram Hbr	Citalopram Hydrobromide	105	27
Topiramate	Topiramate	105	33
Bupropion Xl	Bupropion Hcl	104	36
Levofloxacin	Levofloxacin	103	78
Carvedilol	Carvedilol	96	34
Triamcinolone Acetonide	Triamcinolone Acetonide	95	55
Alendronate Sodium	Alendronate Sodium	93	24
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	93	36
Celecoxib	Celecoxib	89	38
Famotidine	Famotidine	88	17
Hydrochlorothiazide	Hydrochlorothiazide	87	25
Repaglinide	Repaglinide	83	28
Spironolactone	Spironolactone	81	19
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	80	40
Jardiance	Empagliflozin	80	22
Ibuprofen	Ibuprofen	75	26
Fluconazole	Fluconazole	71	51
Venlafaxine Hcl Er	Venlafaxine Hcl	71	17
Enalapril Maleate	Enalapril Maleate	69	17
Humalog Kwikpen U-100	Insulin Lispro	67	20
Ventolin Hfa	Albuterol Sulfate	67	19
Sucralfate	Sucralfate	66	23
Lorazepam	Lorazepam	64	21
Ondansetron Odt	Ondansetron	64	40
Clonazepam	Clonazepam	63	14
Allopurinol	Allopurinol	62	14
Donepezil Hcl	Donepezil Hcl	62	12
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	62	12
Fluticasone Propionate	Fluticasone Propionate	59	27
Meclizine Hcl	Meclizine Hcl	59	23
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	58	13
Tradjenta	Linagliptin	58	12
Propranolol Hcl	Propranolol Hcl	57	12
Ezetimibe	Ezetimibe	56	17
Farxiga	Dapagliflozin Propanediol	56	11
Constulose	Lactulose	55	31
Myrbetriq	Mirabegron	55	14
Levetiracetam	Levetiracetam	54	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	54	13
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	51	29
Xarelto	Rivaroxaban	51	12
Lactulose	Lactulose	49	31
Abrysvo	Rsv Vacc, Pref A And Pref B/Pf	48	48
Ciprofloxacin Hcl	Ciprofloxacin Hcl	47	37
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	47	12
Memantine Hcl	Memantine Hcl	46	suppressed
Ondansetron Hcl	Ondansetron Hcl	45	22
Alprazolam	Alprazolam	44	23
Synthroid	Levothyroxine Sodium	44	11
Doxycycline Hyclate	Doxycycline Hyclate	43	31
Benztropine Mesylate	Benztropine Mesylate	42	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	42	20
Klor-Con M10	Potassium Chloride	42	suppressed
Trulicity	Dulaglutide	41	suppressed
Aripiprazole	Aripiprazole	40	12
Buspirone Hcl	Buspirone Hcl	40	12
Zolpidem Tartrate	Zolpidem Tartrate	40	13
Novolog Flexpen	Insulin Aspart	39	15
Tramadol Hcl	Tramadol Hcl	39	24
Hydroxyzine Hcl	Hydroxyzine Hcl	38	22
Lansoprazole	Lansoprazole	38	suppressed
Pregabalin	Pregabalin	38	suppressed
Valsartan	Valsartan	38	suppressed
Metformin Hcl Er	Metformin Hcl	37	suppressed
Naproxen	Naproxen	37	11
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	36	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	35	13
Synjardy	Empagliflozin/Metformin Hcl	35	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	35	suppressed
Tresiba Flextouch U-100	Insulin Degludec	35	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	34	12
Mupirocin	Mupirocin	34	19
Nystatin	Nystatin	31	18
Alcohol Pads	Alcohol Antiseptic Pads	30	11
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	30	25
Soliqua 100-33	Insulin Glargine/Lixisenatide	30	suppressed
Cephalexin	Cephalexin	28	22
Entresto	Sacubitril/Valsartan	27	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	26	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	26	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	25	suppressed
Ibu	Ibuprofen	25	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	25	suppressed
Paroxetine Hcl	Paroxetine Hcl	25	12
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	25	suppressed
Bumetanide	Bumetanide	24	13
Carbidopa-Levodopa	Carbidopa/Levodopa	24	suppressed
Janumet	Sitagliptin Phos/Metformin Hcl	24	suppressed
Ketoconazole	Ketoconazole	24	11
Midodrine Hcl	Midodrine Hcl	24	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	24	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	23	suppressed
Metolazone	Metolazone	22	suppressed
Perphenazine	Perphenazine	22	suppressed
Telmisartan	Telmisartan	22	suppressed
Valacyclovir	Valacyclovir Hcl	22	13
Warfarin Sodium	Warfarin Sodium	22	suppressed
Solifenacin Succinate	Solifenacin Succinate	20	suppressed
Breo Ellipta	Fluticasone/Vilanterol	19	suppressed
Breyna	Budesonide/Formoterol Fumarate	19	suppressed
Clindamycin Hcl	Clindamycin Hcl	19	16
Diazepam	Diazepam	18	11
Divalproex Sodium	Divalproex Sodium	18	suppressed
Gemfibrozil	Gemfibrozil	18	suppressed
Jentadueto	Linagliptin/Metformin Hcl	18	suppressed
Primidone	Primidone	18	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	17	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	17	suppressed
Droplet Pen Needle	Pen Needle, Diabetic	17	suppressed
Digoxin	Digoxin	16	suppressed
Glipizide	Glipizide	16	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	16	suppressed
Jentadueto Xr	Linagliptin/Metformin Hcl	16	suppressed
Lamotrigine	Lamotrigine	16	suppressed
Rizatriptan	Rizatriptan Benzoate	16	suppressed
Tiotropium Bromide	Tiotropium Bromide	16	suppressed
Alcohol Swabs	Alcohol Antiseptic Pads	15	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	15	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	15	suppressed
Ranolazine Er	Ranolazine	15	suppressed
Ropinirole Hcl	Ropinirole Hcl	15	suppressed
Clonidine Hcl	Clonidine Hcl	14	suppressed
Estradiol	Estradiol	14	suppressed
Unifine Pentips Plus	Pen Needle, Diabetic	14	suppressed
Chlorthalidone	Chlorthalidone	13	suppressed
Dutasteride	Dutasteride	13	suppressed
Glipizide Er	Glipizide	13	suppressed
Insulin Aspart Flexpen	Insulin Aspart	13	suppressed
Memantine Hcl Er	Memantine Hcl	13	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	13	suppressed
Nebivolol Hcl	Nebivolol Hcl	13	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	13	suppressed
Sotalol	Sotalol Hcl	13	suppressed
Theo-24	Theophylline Anhydrous	13	suppressed
Amiodarone Hcl	Amiodarone Hcl	12	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	12	suppressed
Colestipol Hcl	Colestipol Hcl	12	suppressed
Fenofibrate	Fenofibrate	12	suppressed
Levemir Flexpen	Insulin Detemir	12	suppressed
Lovastatin	Lovastatin	12	suppressed
Mirabegron Er	Mirabegron	12	suppressed
Shingrix	Varicella-Zoster Ge/As01b/Pf	12	suppressed
True Comfort Safety Pen Needle	Pen Needle, Diabetic, Safety	12	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	11	suppressed
Advocate Pen Needles	Pen Needle, Diabetic	11	suppressed
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	11	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	11	suppressed
Divalproex Sodium Er	Divalproex Sodium	11	suppressed
Febuxostat	Febuxostat	11	suppressed
Hydrocortisone	Hydrocortisone	11	suppressed
Invokamet	Canagliflozin/Metformin Hcl	11	suppressed
Repatha Sureclick	Evolocumab	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