Healthcare provider profile · identity verified

Branka O'Sullivan, MD

Internal Medicine · SKOKIE, IL · NPI 1497709968

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	932	274
Amlodipine Besylate	Amlodipine Besylate	594	182
Rosuvastatin Calcium	Rosuvastatin Calcium	552	172
Levothyroxine Sodium	Levothyroxine Sodium	520	135
Losartan Potassium	Losartan Potassium	372	111
Metformin Hcl	Metformin Hcl	330	92
Metoprolol Succinate	Metoprolol Succinate	321	91
Escitalopram Oxalate	Escitalopram Oxalate	314	83
Hydrochlorothiazide	Hydrochlorothiazide	268	77
Simvastatin	Simvastatin	254	72
Omeprazole	Omeprazole	245	80
Lisinopril	Lisinopril	242	76
Gabapentin	Gabapentin	227	64
Fluticasone Propionate	Fluticasone Propionate	195	91
Eliquis	Apixaban	184	45
Tramadol Hcl	Tramadol Hcl	184	43
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	164	25
Metformin Hcl Er	Metformin Hcl	141	44
Sertraline Hcl	Sertraline Hcl	130	41
Pantoprazole Sodium	Pantoprazole Sodium	127	45
Tamsulosin Hcl	Tamsulosin Hcl	121	38
Alendronate Sodium	Alendronate Sodium	113	39
Famotidine	Famotidine	112	42
Metoprolol Tartrate	Metoprolol Tartrate	111	30
Alprazolam	Alprazolam	105	39
Glimepiride	Glimepiride	102	26
Furosemide	Furosemide	97	35
Lorazepam	Lorazepam	96	37
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	96	29
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	95	30
Allopurinol	Allopurinol	91	30
Trazodone Hcl	Trazodone Hcl	90	26
Albuterol Sulfate Hfa	Albuterol Sulfate	76	36
Trulicity	Dulaglutide	76	suppressed
Synthroid	Levothyroxine Sodium	71	19
Carvedilol	Carvedilol	66	18
Duloxetine Hcl	Duloxetine Hcl	66	18
Pravastatin Sodium	Pravastatin Sodium	66	22
Spironolactone	Spironolactone	65	22
Pregabalin	Pregabalin	63	suppressed
Clopidogrel	Clopidogrel Bisulfate	58	16
Bupropion Xl	Bupropion Hcl	57	15
Irbesartan	Irbesartan	55	15
Triamcinolone Acetonide	Triamcinolone Acetonide	54	32
Zolpidem Tartrate	Zolpidem Tartrate	54	18
Enalapril Maleate	Enalapril Maleate	51	11
Montelukast Sodium	Montelukast Sodium	51	20
Ezetimibe	Ezetimibe	50	16
Hydroxyzine Hcl	Hydroxyzine Hcl	49	suppressed
Jardiance	Empagliflozin	49	11
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	48	16
Mirtazapine	Mirtazapine	47	suppressed
Myrbetriq	Mirabegron	47	13
Warfarin Sodium	Warfarin Sodium	45	12
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	43	suppressed
Ondansetron Hcl	Ondansetron Hcl	43	11
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	41	suppressed
Clonazepam	Clonazepam	40	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	40	40
Venlafaxine Hcl Er	Venlafaxine Hcl	40	11
Prednisone	Prednisone	39	18
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	37	11
Methylprednisolone	Methylprednisolone	37	31
Ozempic	Semaglutide	36	suppressed
Donepezil Hcl	Donepezil Hcl	35	12
Benazepril Hcl	Benazepril Hcl	34	11
Celecoxib	Celecoxib	33	13
Fluoxetine Hcl	Fluoxetine Hcl	33	12
Nebivolol Hcl	Nebivolol Hcl	33	suppressed
Xarelto	Rivaroxaban	33	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	32	12
Januvia	Sitagliptin Phosphate	32	suppressed
Meloxicam	Meloxicam	30	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	29	suppressed
Valsartan	Valsartan	29	11
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	28	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	28	11
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	28	suppressed
Atenolol	Atenolol	27	suppressed
Paroxetine Hcl	Paroxetine Hcl	26	suppressed
Breo Ellipta	Fluticasone/Vilanterol	25	11
Fenofibrate	Fenofibrate Nanocrystallized	25	suppressed
Potassium Chloride	Potassium Chloride	24	suppressed
Tizanidine Hcl	Tizanidine Hcl	23	suppressed
Lovastatin	Lovastatin	22	suppressed
Finasteride	Finasteride	21	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	20	suppressed
Estradiol	Estradiol	19	suppressed
Lidocaine	Lidocaine	19	suppressed
Propranolol Hcl	Propranolol Hcl	19	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	18	14
Diazepam	Diazepam	18	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	18	14
Nifedipine Er	Nifedipine	18	suppressed
Valacyclovir	Valacyclovir Hcl	18	suppressed
Azithromycin	Azithromycin	17	16
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	17	suppressed
Hydrocortisone	Hydrocortisone	17	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	17	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	17	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	16	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	16	suppressed
Diclofenac Sodium	Diclofenac Sodium	16	suppressed
Donepezil Hcl Odt	Donepezil Hcl	16	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	15	suppressed
Digoxin	Digoxin	15	suppressed
Lansoprazole	Lansoprazole	15	suppressed
Meclizine Hcl	Meclizine Hcl	15	13
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	15	14
Pindolol	Pindolol	15	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	15	suppressed
Ramipril	Ramipril	15	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	15	suppressed
Torsemide	Torsemide	15	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	15	suppressed
Baclofen	Baclofen	14	suppressed
Cefpodoxime Proxetil	Cefpodoxime Proxetil	14	12
Entresto	Sacubitril/Valsartan	14	suppressed
Glipizide Er	Glipizide	14	suppressed
Ipratropium Bromide	Ipratropium Bromide	14	suppressed
Repaglinide	Repaglinide	14	suppressed
Travoprost	Travoprost	14	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	13	suppressed
Alcohol Prep Pads	Alcohol Antiseptic Pads	13	suppressed
Citalopram Hbr	Citalopram Hydrobromide	13	suppressed
Latanoprost	Latanoprost	13	suppressed
Methenamine Hippurate	Methenamine Hippurate	13	suppressed
Ranolazine Er	Ranolazine	13	suppressed
Telmisartan	Telmisartan	13	suppressed
Bupropion Hcl	Bupropion Hcl	12	suppressed
Letrozole	Letrozole	12	suppressed
Levetiracetam	Levetiracetam	12	suppressed
Methocarbamol	Methocarbamol	12	suppressed
Novolog Flexpen	Insulin Aspart	12	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	11	suppressed
Amoxicillin	Amoxicillin	11	suppressed
Hydralazine Hcl	Hydralazine Hcl	11	suppressed
Metronidazole	Metronidazole	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