Healthcare provider profile · identity verified

Robert Parks, M.D.

Internal Medicine · BENTON, IL · NPI 1356380497

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	871	99
Levothyroxine Sodium	Levothyroxine Sodium	801	67
Potassium Chloride	Potassium Chloride	512	66
Gabapentin	Gabapentin	473	48
Furosemide	Furosemide	442	69
Eliquis	Apixaban	411	40
Levetiracetam	Levetiracetam	364	33
Donepezil Hcl	Donepezil Hcl	344	38
Tamsulosin Hcl	Tamsulosin Hcl	333	39
Memantine Hcl	Memantine Hcl	298	29
Mirtazapine	Mirtazapine	270	35
Amlodipine Besylate	Amlodipine Besylate	262	33
Lisinopril	Lisinopril	252	27
Metformin Hcl	Metformin Hcl	252	27
Metoprolol Tartrate	Metoprolol Tartrate	250	33
Pantoprazole Sodium	Pantoprazole Sodium	241	41
Famotidine	Famotidine	232	20
Quetiapine Fumarate	Quetiapine Fumarate	223	19
Buspirone Hcl	Buspirone Hcl	219	31
Clopidogrel	Clopidogrel Bisulfate	215	27
Trazodone Hcl	Trazodone Hcl	191	31
Metoprolol Succinate	Metoprolol Succinate	189	30
Escitalopram Oxalate	Escitalopram Oxalate	187	24
Losartan Potassium	Losartan Potassium	158	21
Omeprazole	Omeprazole	157	21
Carvedilol	Carvedilol	154	26
Divalproex Sodium	Divalproex Sodium	150	20
Xarelto	Rivaroxaban	149	suppressed
Citalopram Hbr	Citalopram Hydrobromide	146	17
Sertraline Hcl	Sertraline Hcl	146	23
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	138	20
Olanzapine	Olanzapine	136	14
Simvastatin	Simvastatin	136	15
Lorazepam	Lorazepam	128	30
Aripiprazole	Aripiprazole	118	suppressed
Fluvoxamine Maleate	Fluvoxamine Maleate	118	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	96	suppressed
Benztropine Mesylate	Benztropine Mesylate	95	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	94	suppressed
Olanzapine Odt	Olanzapine	87	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	84	12
Lamotrigine	Lamotrigine	76	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	74	suppressed
Ondansetron Hcl	Ondansetron Hcl	73	30
Duloxetine Hcl	Duloxetine Hcl	72	suppressed
Januvia	Sitagliptin Phosphate	72	suppressed
Allopurinol	Allopurinol	69	suppressed
Myrbetriq	Mirabegron	67	suppressed
Topiramate	Topiramate	67	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	66	18
Hydrochlorothiazide	Hydrochlorothiazide	65	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	63	suppressed
Primidone	Primidone	63	suppressed
Enulose	Lactulose	62	suppressed
Clonazepam	Clonazepam	59	11
Baclofen	Baclofen	58	suppressed
Montelukast Sodium	Montelukast Sodium	57	suppressed
Bupropion Xl	Bupropion Hcl	56	suppressed
Ibuprofen	Ibuprofen	56	suppressed
Risperidone	Risperidone	56	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	53	suppressed
Gemfibrozil	Gemfibrozil	52	suppressed
Latanoprost	Latanoprost	52	12
Propafenone Hcl	Propafenone Hcl	52	suppressed
Spironolactone	Spironolactone	52	11
Prednisone	Prednisone	50	suppressed
Sucralfate	Sucralfate	50	suppressed
Farxiga	Dapagliflozin Propanediol	49	suppressed
Lactulose	Lactulose	47	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	46	suppressed
Prazosin Hcl	Prazosin Hcl	46	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	43	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	41	suppressed
Tradjenta	Linagliptin	41	suppressed
Finasteride	Finasteride	40	suppressed
Amantadine	Amantadine Hcl	38	suppressed
Pravastatin Sodium	Pravastatin Sodium	38	suppressed
Hydralazine Hcl	Hydralazine Hcl	37	suppressed
Jardiance	Empagliflozin	37	suppressed
Lithium Carbonate	Lithium Carbonate	37	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	36	suppressed
Lacosamide	Lacosamide	36	suppressed
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	34	suppressed
Tramadol Hcl	Tramadol Hcl	34	13
Metformin Hcl Er	Metformin Hcl	32	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	31	suppressed
Meloxicam	Meloxicam	31	suppressed
Nebivolol Hcl	Nebivolol Hcl	31	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	30	suppressed
Oxycodone Hcl	Oxycodone Hcl	30	suppressed
Bumetanide	Bumetanide	29	suppressed
Fluticasone Propionate	Fluticasone Propionate	28	suppressed
Paroxetine Hcl	Paroxetine Hcl	28	suppressed
Tizanidine Hcl	Tizanidine Hcl	28	suppressed
Atenolol	Atenolol	27	suppressed
Lovastatin	Lovastatin	27	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	26	suppressed
Nuedexta	Dextromethorphan Hbr/Quinidine	26	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	25	suppressed
Humalog	Insulin Lispro	25	suppressed
Divalproex Sodium Er	Divalproex Sodium	24	suppressed
Glipizide	Glipizide	23	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	23	suppressed
Timolol Maleate	Timolol Maleate	23	suppressed
Ventolin Hfa	Albuterol Sulfate	23	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	22	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	22	suppressed
Fenofibrate	Fenofibrate,micronized	22	suppressed
Invega Sustenna	Paliperidone Palmitate	22	suppressed
Methimazole	Methimazole	22	suppressed
Alendronate Sodium	Alendronate Sodium	21	suppressed
Budesonide Er	Budesonide	21	suppressed
Diltiazem 24hr Er (La)	Diltiazem Hcl	21	suppressed
Silver Sulfadiazine	Silver Sulfadiazine	21	suppressed
Aptiom	Eslicarbazepine Acetate	20	suppressed
Fiasp Flextouch	Insulin Aspart (Niacinamide)	20	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	20	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	19	13
Glipizide Er	Glipizide	19	suppressed
Linzess	Linaclotide	19	suppressed
Metolazone	Metolazone	19	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	19	suppressed
Ropinirole Hcl	Ropinirole Hcl	19	suppressed
Zonisamide	Zonisamide	19	suppressed
Amiodarone Hcl	Amiodarone Hcl	18	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	18	13
Torsemide	Torsemide	18	suppressed
Ezetimibe	Ezetimibe	17	suppressed
Gemtesa	Vibegron	17	suppressed
Repaglinide	Repaglinide	17	suppressed
Symproic	Naldemedine Tosylate	17	suppressed
Doxepin Hcl	Doxepin Hcl	16	suppressed
Morphine Sulfate	Morphine Sulfate	16	16
Novolog Flexpen	Insulin Aspart	16	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	16	12
Tresiba Flextouch U-100	Insulin Degludec	16	suppressed
Bupropion Hcl	Bupropion Hcl	15	suppressed
Cyanocobalamin Injection	Cyanocobalamin (Vitamin B-12)	15	suppressed
Incruse Ellipta	Umeclidinium Bromide	15	suppressed
Isosorbide Dinitrate	Isosorbide Dinitrate	15	suppressed
Paliperidone Er	Paliperidone	15	suppressed
Valproic Acid	Valproic Acid (As Sodium Salt)	15	suppressed
Brilinta	Ticagrelor	14	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	14	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	14	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	14	suppressed
Hydrocortisone	Hydrocortisone	14	suppressed
Methotrexate	Methotrexate Sodium	14	suppressed
Oxcarbazepine	Oxcarbazepine	14	suppressed
Ramelteon	Ramelteon	14	suppressed
Ziprasidone Hcl	Ziprasidone Hcl	14	suppressed
Budesonide Ec	Budesonide	13	suppressed
Carbamazepine Er	Carbamazepine	13	suppressed
Dantrolene Sodium	Dantrolene Sodium	13	suppressed
Ingrezza	Valbenazine Tosylate	13	suppressed
Insulin Aspart Flexpen	Insulin Aspart	13	suppressed
Letrozole	Letrozole	13	suppressed
Memantine Hcl Er	Memantine Hcl	13	suppressed
Tamoxifen Citrate	Tamoxifen Citrate	13	suppressed
Valacyclovir	Valacyclovir Hcl	13	suppressed
Celecoxib	Celecoxib	12	suppressed
Cephalexin	Cephalexin	12	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	12	suppressed
Galantamine Hbr	Galantamine Hbr	12	suppressed
Levofloxacin	Levofloxacin	12	suppressed
Liothyronine Sodium	Liothyronine Sodium	12	suppressed
Loperamide	Loperamide Hcl	12	suppressed
Methylprednisolone	Methylprednisolone	12	suppressed
Midodrine Hcl	Midodrine Hcl	12	suppressed
Naproxen	Naproxen	12	suppressed
Pregabalin	Pregabalin	12	suppressed
Propranolol Hcl Er	Propranolol Hcl	12	suppressed
Raloxifene Hcl	Raloxifene Hcl	12	suppressed
Varenicline Tartrate	Varenicline Tartrate	12	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	12	suppressed
Anastrozole	Anastrozole	11	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	11	suppressed
Budesonide	Budesonide	11	suppressed
Calcitriol	Calcitriol	11	suppressed
Glimepiride	Glimepiride	11	suppressed
Humalog Kwikpen U-100	Insulin Lispro	11	suppressed
Novolog	Insulin Aspart	11	suppressed
Phenobarbital	Phenobarbital	11	suppressed
Propranolol Hcl	Propranolol Hcl	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