Healthcare provider profile · identity verified

Robia Byas, M.D.

Internal Medicine · CHICAGO, IL · NPI 1093748758

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	685	218
Amlodipine Besylate	Amlodipine Besylate	637	188
Losartan Potassium	Losartan Potassium	478	142
Metoprolol Succinate	Metoprolol Succinate	306	94
Gabapentin	Gabapentin	273	104
Lisinopril	Lisinopril	209	70
Furosemide	Furosemide	199	68
Nifedipine Er	Nifedipine	193	62
Metformin Hcl	Metformin Hcl	186	59
Simvastatin	Simvastatin	184	50
Omeprazole	Omeprazole	182	61
Rosuvastatin Calcium	Rosuvastatin Calcium	182	62
Hydrochlorothiazide	Hydrochlorothiazide	172	57
Levothyroxine Sodium	Levothyroxine Sodium	171	48
Potassium Chloride	Potassium Chloride	171	53
Pantoprazole Sodium	Pantoprazole Sodium	161	54
Carvedilol	Carvedilol	151	49
Irbesartan	Irbesartan	128	39
Eliquis	Apixaban	127	32
Hydralazine Hcl	Hydralazine Hcl	124	41
Jardiance	Empagliflozin	117	34
Alendronate Sodium	Alendronate Sodium	116	30
Famotidine	Famotidine	116	42
Metoprolol Tartrate	Metoprolol Tartrate	115	36
Lovastatin	Lovastatin	109	31
Fluticasone Propionate	Fluticasone Propionate	105	43
Glipizide	Glipizide	104	32
Triamcinolone Acetonide	Triamcinolone Acetonide	104	46
Albuterol Sulfate Hfa	Albuterol Sulfate	102	41
Ozempic	Semaglutide	102	18
Spironolactone	Spironolactone	97	25
Tramadol Hcl	Tramadol Hcl	95	24
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	85	31
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	83	25
Allopurinol	Allopurinol	82	24
Baclofen	Baclofen	82	45
Duloxetine Hcl	Duloxetine Hcl	82	24
Donepezil Hcl	Donepezil Hcl	78	30
Clopidogrel	Clopidogrel Bisulfate	72	19
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	66	19
Alprazolam	Alprazolam	65	16
Mirtazapine	Mirtazapine	65	33
Felodipine Er	Felodipine	63	20
Prednisone	Prednisone	62	56
Pravastatin Sodium	Pravastatin Sodium	61	16
Labetalol Hcl	Labetalol Hcl	54	16
Montelukast Sodium	Montelukast Sodium	54	19
Tamsulosin Hcl	Tamsulosin Hcl	53	17
Meclizine Hcl	Meclizine Hcl	52	21
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	49	15
Azithromycin	Azithromycin	48	44
Latanoprost	Latanoprost	48	15
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	47	12
Acetaminophen-Codeine	Acetaminophen With Codeine	45	16
Breo Ellipta	Fluticasone/Vilanterol	45	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	42	13
Warfarin Sodium	Warfarin Sodium	42	12
Glipizide Er	Glipizide	41	12
Azelastine Hcl	Azelastine Hcl	40	19
Methimazole	Methimazole	40	12
Valsartan	Valsartan	40	12
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	38	11
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	37	11
Dropsafe Prep Pads	Alcohol Antiseptic Pads	37	suppressed
Entresto	Sacubitril/Valsartan	37	suppressed
Verapamil Er	Verapamil Hcl	37	11
Ezetimibe	Ezetimibe	36	11
Xarelto	Rivaroxaban	34	suppressed
Clonidine Hcl	Clonidine Hcl	32	suppressed
Fluconazole	Fluconazole	32	18
Metformin Hcl Er	Metformin Hcl	32	13
Mounjaro	Tirzepatide	32	suppressed
Enalapril Maleate	Enalapril Maleate	28	suppressed
Tresiba Flextouch U-100	Insulin Degludec	28	suppressed
Atenolol	Atenolol	27	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	26	suppressed
Ibandronate Sodium	Ibandronate Sodium	24	suppressed
Lorazepam	Lorazepam	23	suppressed
Nystatin	Nystatin	23	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	23	11
Oxybutynin Chloride Er	Oxybutynin Chloride	23	suppressed
Benazepril Hcl	Benazepril Hcl	22	suppressed
Bupropion Xl	Bupropion Hcl	22	suppressed
Pregabalin	Pregabalin	22	11
Terazosin Hcl	Terazosin Hcl	22	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	22	suppressed
Chlorthalidone	Chlorthalidone	21	suppressed
Ciclopirox	Ciclopirox	21	suppressed
Sertraline Hcl	Sertraline Hcl	21	suppressed
Glimepiride	Glimepiride	20	suppressed
Valacyclovir	Valacyclovir Hcl	19	suppressed
Novolog Flexpen	Insulin Aspart	18	suppressed
Novolog Mix 70-30 Flexpen	Insulin Aspart Prot/Insuln Asp	18	suppressed
Paroxetine Hcl	Paroxetine Hcl	18	suppressed
Arnuity Ellipta	Fluticasone Furoate	17	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	17	17
Glipizide-Metformin	Glipizide/Metformin Hcl	16	suppressed
Memantine Hcl	Memantine Hcl	16	suppressed
Praluent Pen	Alirocumab	16	suppressed
Rybelsus	Semaglutide	16	suppressed
Telmisartan	Telmisartan	16	suppressed
Torsemide	Torsemide	16	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	15	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	15	suppressed
Levetiracetam	Levetiracetam	15	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	15	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	15	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	15	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	14	suppressed
Meloxicam	Meloxicam	14	13
Repatha Sureclick	Evolocumab	14	suppressed
Telmisartan-Hydrochlorothiazid	Telmisartan/Hydrochlorothiazid	14	suppressed
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	13	suppressed
Anastrozole	Anastrozole	13	suppressed
Carbamazepine	Carbamazepine	13	suppressed
Cephalexin	Cephalexin	13	11
Droplet Pen Needle	Pen Needle, Diabetic	13	suppressed
Sildenafil Citrate	Sildenafil Citrate	13	suppressed
Tizanidine Hcl	Tizanidine Hcl	13	12
Acetazolamide	Acetazolamide	12	suppressed
Acyclovir	Acyclovir	12	suppressed
Estradiol	Estradiol	12	suppressed
Symbicort	Budesonide/Formoterol Fumarate	12	suppressed
Clobetasol Propionate	Clobetasol Propionate	11	suppressed
Creon	Lipase/Protease/Amylase	11	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	11	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	11	suppressed
Lidocaine	Lidocaine	11	suppressed
Lidocaine-Prilocaine	Lidocaine/Prilocaine	11	suppressed
Zolpidem Tartrate	Zolpidem 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