Healthcare provider profile · identity verified

Vasil Nika, M.D.

Family Practice · ROCKTON, IL · NPI 1811987886

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	1706	210
Furosemide	Furosemide	1537	200
Levothyroxine Sodium	Levothyroxine Sodium	1428	162
Amlodipine Besylate	Amlodipine Besylate	1268	162
Lisinopril	Lisinopril	1179	114
Eliquis	Apixaban	929	109
Mirtazapine	Mirtazapine	912	100
Metoprolol Succinate	Metoprolol Succinate	886	112
Potassium Chloride	Potassium Chloride	857	130
Gabapentin	Gabapentin	827	116
Metoprolol Tartrate	Metoprolol Tartrate	810	95
Donepezil Hcl	Donepezil Hcl	787	82
Pantoprazole Sodium	Pantoprazole Sodium	787	127
Losartan Potassium	Losartan Potassium	720	77
Sertraline Hcl	Sertraline Hcl	618	79
Famotidine	Famotidine	609	45
Tamsulosin Hcl	Tamsulosin Hcl	581	85
Escitalopram Oxalate	Escitalopram Oxalate	541	51
Omeprazole	Omeprazole	519	83
Citalopram Hbr	Citalopram Hydrobromide	440	31
Clopidogrel	Clopidogrel Bisulfate	385	45
Quetiapine Fumarate	Quetiapine Fumarate	380	60
Trazodone Hcl	Trazodone Hcl	376	43
Hydralazine Hcl	Hydralazine Hcl	358	40
Hydrochlorothiazide	Hydrochlorothiazide	343	31
Memantine Hcl	Memantine Hcl	336	34
Jantoven	Warfarin Sodium	326	18
Metformin Hcl	Metformin Hcl	312	52
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	302	33
Simvastatin	Simvastatin	300	36
Xarelto	Rivaroxaban	296	31
Spironolactone	Spironolactone	293	39
Carbidopa-Levodopa	Carbidopa/Levodopa	284	27
Klor-Con M20	Potassium Chloride	269	24
Allopurinol	Allopurinol	258	35
Prednisone	Prednisone	253	46
Carvedilol	Carvedilol	251	41
Finasteride	Finasteride	251	32
Alendronate Sodium	Alendronate Sodium	243	27
Duloxetine Hcl	Duloxetine Hcl	232	36
Levetiracetam	Levetiracetam	193	22
Fluticasone Propionate	Fluticasone Propionate	184	60
Atenolol	Atenolol	178	18
Calcitriol	Calcitriol	174	14
Warfarin Sodium	Warfarin Sodium	172	19
Jardiance	Empagliflozin	167	29
Metformin Hcl Er	Metformin Hcl	166	18
Ezetimibe	Ezetimibe	146	11
Latanoprost	Latanoprost	146	35
Diltiazem Hcl	Diltiazem Hcl	141	20
Divalproex Sodium	Divalproex Sodium	139	17
Glipizide	Glipizide	138	18
Januvia	Sitagliptin Phosphate	136	suppressed
Midodrine Hcl	Midodrine Hcl	136	48
Bumetanide	Bumetanide	133	21
Isosorbide Mononitrate Er	Isosorbide Mononitrate	131	17
Montelukast Sodium	Montelukast Sodium	130	16
Nifedipine Er	Nifedipine	127	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	127	11
Amitriptyline Hcl	Amitriptyline Hcl	126	12
Meloxicam	Meloxicam	124	12
Ondansetron Hcl	Ondansetron Hcl	120	48
Buspirone Hcl	Buspirone Hcl	116	12
Ropinirole Hcl	Ropinirole Hcl	116	11
Paroxetine Hcl	Paroxetine Hcl	115	suppressed
Risperidone	Risperidone	114	17
Cephalexin	Cephalexin	108	65
Aripiprazole	Aripiprazole	106	suppressed
Repaglinide	Repaglinide	102	suppressed
Pravastatin Sodium	Pravastatin Sodium	99	15
Digoxin	Digoxin	92	14
Myrbetriq	Mirabegron	90	suppressed
Tizanidine Hcl	Tizanidine Hcl	88	17
Tramadol Hcl	Tramadol Hcl	88	24
Rosuvastatin Calcium	Rosuvastatin Calcium	86	21
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	85	27
Isosorbide Dinitrate	Isosorbide Dinitrate	83	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	83	47
Chlorthalidone	Chlorthalidone	82	15
Vancomycin Hcl	Vancomycin Hcl	82	19
Amiodarone Hcl	Amiodarone Hcl	75	18
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	74	39
Brimonidine Tartrate	Brimonidine Tartrate	72	13
Doxazosin Mesylate	Doxazosin Mesylate	71	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	71	41
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	68	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	68	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	67	41
Olanzapine	Olanzapine	67	14
Baclofen	Baclofen	66	15
Glipizide Er	Glipizide	66	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	66	22
Oxybutynin Chloride	Oxybutynin Chloride	64	16
Dicyclomine Hcl	Dicyclomine Hcl	62	12
Novolog Flexpen	Insulin Aspart	62	11
Acyclovir	Acyclovir	60	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	60	14
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	59	29
Sucralfate	Sucralfate	59	19
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	56	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	56	suppressed
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	56	24
Liothyronine Sodium	Liothyronine Sodium	56	suppressed
Gemtesa	Vibegron	55	suppressed
Breo Ellipta	Fluticasone/Vilanterol	54	suppressed
Levemir Flexpen	Insulin Detemir	54	suppressed
Ipratropium Bromide	Ipratropium Bromide	53	15
Glyburide	Glyburide	52	suppressed
Ranolazine Er	Ranolazine	52	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	51	suppressed
Dutasteride-Tamsulosin	Dutasteride/Tamsulosin Hcl	51	suppressed
Humalog Kwikpen U-100	Insulin Lispro	51	suppressed
Ramipril	Ramipril	51	suppressed
Symbicort	Budesonide/Formoterol Fumarate	50	suppressed
Meclizine Hcl	Meclizine Hcl	49	14
Diltiazem 24hr Er	Diltiazem Hcl	48	suppressed
Ondansetron Odt	Ondansetron	48	26
Albuterol Sulfate Hfa	Albuterol Sulfate	47	36
Triamcinolone Acetonide	Triamcinolone Acetonide	46	17
Bupropion Hcl	Bupropion Hcl	45	suppressed
Bupropion Xl	Bupropion Hcl	45	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	44	32
Nortriptyline Hcl	Nortriptyline Hcl	44	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	44	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	43	suppressed
Brilinta	Ticagrelor	42	suppressed
Bromocriptine Mesylate	Bromocriptine Mesylate	42	suppressed
Methotrexate	Methotrexate Sodium	42	suppressed
Torsemide	Torsemide	41	suppressed
Ceftriaxone	Ceftriaxone Sodium	40	16
Clonidine Hcl	Clonidine Hcl	40	suppressed
Levofloxacin	Levofloxacin	40	29
Methenamine Hippurate	Methenamine Hippurate	40	suppressed
Benazepril Hcl	Benazepril Hcl	39	suppressed
Methocarbamol	Methocarbamol	39	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	39	suppressed
Azithromycin	Azithromycin	38	29
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	38	suppressed
Lovastatin	Lovastatin	37	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	37	suppressed
Carbamazepine	Carbamazepine	36	suppressed
Incruse Ellipta	Umeclidinium Bromide	36	suppressed
Lorazepam	Lorazepam	36	suppressed
Primidone	Primidone	36	suppressed
Dexamethasone	Dexamethasone	34	22
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	33	suppressed
Clonazepam	Clonazepam	32	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	32	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	32	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	32	14
Restasis	Cyclosporine	32	suppressed
Celecoxib	Celecoxib	31	suppressed
Diclofenac Sodium	Diclofenac Sodium	31	suppressed
Folic Acid	Folic Acid	31	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	31	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	30	15
Cefadroxil	Cefadroxil	30	suppressed
Glimepiride	Glimepiride	30	suppressed
Amoxicillin	Amoxicillin	29	23
Fluconazole	Fluconazole	29	11
Valsartan	Valsartan	29	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	28	suppressed
Lamotrigine	Lamotrigine	28	suppressed
Ozempic	Semaglutide	28	suppressed
Timolol Maleate	Timolol Maleate	28	suppressed
Memantine Hcl Er	Memantine Hcl	27	suppressed
Fenofibrate	Fenofibrate,micronized	26	suppressed
Sodium Chloride	0.9 % Sodium Chloride	26	14
Insulin Aspart Flexpen	Insulin Aspart	25	13
Ziprasidone Hcl	Ziprasidone Hcl	24	suppressed
Carbidopa-Levodopa Er	Carbidopa/Levodopa	23	suppressed
Entresto	Sacubitril/Valsartan	23	suppressed
Terazosin Hcl	Terazosin Hcl	23	suppressed
Divalproex Sodium Er	Divalproex Sodium	22	suppressed
Exemestane	Exemestane	22	suppressed
Flecainide Acetate	Flecainide Acetate	22	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	22	suppressed
Oxcarbazepine	Oxcarbazepine	22	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	22	suppressed
Verapamil Er	Verapamil Hcl	22	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	21	suppressed
Nystatin	Nystatin	21	15
Ssd	Silver Sulfadiazine	21	suppressed
Telmisartan	Telmisartan	21	suppressed
Doxepin Hcl	Doxepin Hcl	20	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	20	suppressed
Ibuprofen	Ibuprofen	20	suppressed
Letrozole	Letrozole	20	suppressed
Mupirocin	Mupirocin	20	suppressed
Nystop	Nystatin	20	15
Sumatriptan Succinate	Sumatriptan Succinate	20	suppressed
Trintellix	Vortioxetine Hydrobromide	20	suppressed
Humalog	Insulin Lispro	19	suppressed
Cholestyramine	Cholestyramine (With Sugar)	18	suppressed
Fenofibrate	Fenofibrate	18	suppressed
Lokelma	Sodium Zirconium Cyclosilicate	18	suppressed
Lumigan	Bimatoprost	18	suppressed
Phenelzine Sulfate	Phenelzine Sulfate	18	suppressed
Pilocarpine Hcl	Pilocarpine Hcl	18	suppressed
Santyl	Collagenase Clostridium Hist.	18	suppressed
Tradjenta	Linagliptin	18	suppressed
Albuterol Sulfate	Albuterol Sulfate	17	11
Meropenem	Meropenem	17	suppressed
Novolin 70-30	Insulin Nph Hum/Reg Insulin Hm	17	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Klor-Con	Potassium Chloride	16	suppressed
Leflunomide	Leflunomide	16	suppressed
Naloxone Hcl	Naloxone Hcl	16	13
Propranolol Hcl	Propranolol Hcl	16	suppressed
Raloxifene Hcl	Raloxifene Hcl	16	suppressed
Scopolamine	Scopolamine	16	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	15	suppressed
Calcium Acetate	Calcium Acetate	15	suppressed
Creon	Lipase/Protease/Amylase	15	suppressed
Cyanocobalamin Injection	Cyanocobalamin (Vitamin B-12)	15	suppressed
Diltiazem 24hr Er (La)	Diltiazem Hcl	15	suppressed
Hydrocortisone	Hydrocortisone	15	suppressed
Ketoconazole	Ketoconazole	15	suppressed
Linezolid	Linezolid	15	11
Chlorhexidine Gluconate	Chlorhexidine Gluconate	14	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	14	suppressed
Methimazole	Methimazole	14	suppressed
Naproxen Sodium	Naproxen Sodium	14	suppressed
Prochlorperazine Maleate	Prochlorperazine Maleate	14	suppressed
Pyridostigmine Bromide	Pyridostigmine Bromide	14	suppressed
Solifenacin Succinate	Solifenacin Succinate	14	suppressed
Trulicity	Dulaglutide	14	suppressed
Arnuity Ellipta	Fluticasone Furoate	13	suppressed
Azelastine Hcl	Azelastine Hcl	13	suppressed
Cilostazol	Cilostazol	13	suppressed
Clozapine	Clozapine	13	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	13	suppressed
Farxiga	Dapagliflozin Propanediol	13	suppressed
Imipramine Hcl	Imipramine Hcl	13	suppressed
Novolin 70-30 Flexpen	Insulin Nph Hum/Reg Insulin Hm	13	suppressed
Prednisolone Acetate	Prednisolone Acetate	13	suppressed
Rivastigmine	Rivastigmine	13	suppressed
Sps	Sodium Polystyrene Sulfon/Sorb	13	suppressed
Cefdinir	Cefdinir	12	suppressed
Dorzolamide-Timolol	Dorzolamide/Timolol/Pf	12	suppressed
Fetzima	Levomilnacipran Hcl	12	suppressed
Glycopyrrolate	Glycopyrrolate	12	suppressed
Lidocaine Hcl	Lidocaine Hcl	12	suppressed
Nitroglycerin	Nitroglycerin	12	suppressed
Tadalafil	Tadalafil	12	suppressed
Vilazodone Hcl	Vilazodone Hcl	12	suppressed
Avonex (4 Pack)	Interferon Beta-1a	11	suppressed
Clonidine	Clonidine	11	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	11	suppressed
Glucagon Emergency Kit	Glucagon	11	suppressed
Irbesartan	Irbesartan	11	suppressed
Mycophenolate Mofetil	Mycophenolate Mofetil	11	suppressed
Tolterodine Tartrate	Tolterodine Tartrate	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