Healthcare provider profile · identity verified

Gerald M. Farby, M.D.

Internal Medicine · CHICAGO, IL · NPI 1972504454

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	629	150
Levothyroxine Sodium	Levothyroxine Sodium	522	92
Amlodipine Besylate	Amlodipine Besylate	436	104
Losartan Potassium	Losartan Potassium	401	96
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	311	39
Furosemide	Furosemide	293	40
Metformin Hcl	Metformin Hcl	289	76
Alprazolam	Alprazolam	279	39
Gabapentin	Gabapentin	250	48
Eliquis	Apixaban	237	33
Pantoprazole Sodium	Pantoprazole Sodium	235	60
Lisinopril	Lisinopril	234	59
Famotidine	Famotidine	211	59
Omeprazole	Omeprazole	211	49
Tamsulosin Hcl	Tamsulosin Hcl	194	47
Metoprolol Succinate	Metoprolol Succinate	192	52
Escitalopram Oxalate	Escitalopram Oxalate	188	36
Rosuvastatin Calcium	Rosuvastatin Calcium	185	56
Metoprolol Tartrate	Metoprolol Tartrate	175	45
Tramadol Hcl	Tramadol Hcl	130	25
Trazodone Hcl	Trazodone Hcl	130	25
Albuterol Sulfate Hfa	Albuterol Sulfate	124	32
Hydrochlorothiazide	Hydrochlorothiazide	124	37
Simvastatin	Simvastatin	121	34
Zolpidem Tartrate	Zolpidem Tartrate	120	26
Clopidogrel	Clopidogrel Bisulfate	117	25
Pravastatin Sodium	Pravastatin Sodium	116	31
Diclofenac Sodium	Diclofenac Sodium	112	36
Donepezil Hcl	Donepezil Hcl	96	18
Celecoxib	Celecoxib	94	19
Sertraline Hcl	Sertraline Hcl	94	14
Glimepiride	Glimepiride	93	22
Montelukast Sodium	Montelukast Sodium	89	21
Meloxicam	Meloxicam	88	suppressed
Januvia	Sitagliptin Phosphate	87	16
Mirtazapine	Mirtazapine	82	16
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	79	41
Carvedilol	Carvedilol	76	18
Prednisone	Prednisone	75	37
Enalapril Maleate	Enalapril Maleate	74	17
Potassium Chloride	Potassium Chloride	73	12
Fluticasone Propionate	Fluticasone Propionate	72	32
Clonazepam	Clonazepam	71	17
Triamcinolone Acetonide	Triamcinolone Acetonide	71	35
Finasteride	Finasteride	69	15
Naproxen	Naproxen	67	13
Memantine Hcl	Memantine Hcl	66	suppressed
Levetiracetam	Levetiracetam	65	suppressed
Diazepam	Diazepam	63	12
Lorazepam	Lorazepam	63	suppressed
Allopurinol	Allopurinol	58	15
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	57	15
Fluoxetine Hcl	Fluoxetine Hcl	55	13
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	53	12
Pregabalin	Pregabalin	51	suppressed
Hydralazine Hcl	Hydralazine Hcl	50	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	50	suppressed
Azithromycin	Azithromycin	49	36
Valsartan	Valsartan	49	suppressed
Breo Ellipta	Fluticasone/Vilanterol	45	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	45	12
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	42	14
Jardiance	Empagliflozin	41	suppressed
Amoxicillin	Amoxicillin	40	23
Pioglitazone Hcl	Pioglitazone Hcl	40	suppressed
Risperidone	Risperidone	40	suppressed
Farxiga	Dapagliflozin Propanediol	38	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	38	suppressed
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	38	suppressed
Tradjenta	Linagliptin	38	suppressed
Ventolin Hfa	Albuterol Sulfate	38	suppressed
Duloxetine Hcl	Duloxetine Hcl	37	suppressed
Irbesartan	Irbesartan	37	11
Ozempic	Semaglutide	37	suppressed
Atenolol	Atenolol	36	suppressed
Ezetimibe	Ezetimibe	36	13
Lamotrigine	Lamotrigine	35	suppressed
Amantadine	Amantadine Hcl	34	suppressed
Lovastatin	Lovastatin	34	suppressed
Warfarin Sodium	Warfarin Sodium	34	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	32	suppressed
Amiodarone Hcl	Amiodarone Hcl	31	suppressed
Bupropion Xl	Bupropion Hcl	31	suppressed
Chlorthalidone	Chlorthalidone	31	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	31	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	31	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	30	suppressed
Mupirocin	Mupirocin	30	17
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	30	suppressed
Nifedipine Er	Nifedipine	29	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	28	suppressed
Divalproex Sodium	Divalproex Sodium	28	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	28	suppressed
Valacyclovir	Valacyclovir Hcl	28	suppressed
Methylprednisolone	Methylprednisolone	27	22
Alendronate Sodium	Alendronate Sodium	26	suppressed
Entresto	Sacubitril/Valsartan	26	suppressed
Myrbetriq	Mirabegron	26	suppressed
Xarelto	Rivaroxaban	26	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	25	17
Baclofen	Baclofen	25	suppressed
Ibuprofen	Ibuprofen	25	11
Novolog Flexpen	Insulin Aspart	25	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	25	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	24	suppressed
Benazepril Hcl	Benazepril Hcl	24	suppressed
Meclizine Hcl	Meclizine Hcl	24	suppressed
Topiramate	Topiramate	24	suppressed
Tresiba Flextouch U-100	Insulin Degludec	24	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	23	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	23	15
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	23	13
Glipizide	Glipizide	23	suppressed
Ipratropium Bromide	Ipratropium Bromide	23	suppressed
Paroxetine Hcl	Paroxetine Hcl	23	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	23	11
Clindamycin Hcl	Clindamycin Hcl	22	suppressed
Hydrocortisone	Hydrocortisone	22	11
Isosorbide Mononitrate Er	Isosorbide Mononitrate	22	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	22	22
Vascepa	Icosapent Ethyl	22	suppressed
Levofloxacin	Levofloxacin	21	12
Spironolactone	Spironolactone	21	suppressed
Synthroid	Levothyroxine Sodium	21	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	21	suppressed
Humalog Kwikpen U-100	Insulin Lispro	20	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	20	suppressed
Propranolol Hcl	Propranolol Hcl	20	suppressed
Ramipril	Ramipril	20	suppressed
Cephalexin	Cephalexin	19	12
Esomeprazole Magnesium	Esomeprazole Magnesium	19	suppressed
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	19	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	19	suppressed
Ondansetron Hcl	Ondansetron Hcl	19	12
Alfuzosin Hcl Er	Alfuzosin Hcl	18	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	18	suppressed
Dutasteride	Dutasteride	18	suppressed
Bumetanide	Bumetanide	17	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	17	suppressed
Nadolol	Nadolol	17	suppressed
Aripiprazole	Aripiprazole	16	suppressed
Calcium Acetate	Calcium Acetate	16	suppressed
Clobetasol Propionate	Clobetasol Propionate	16	suppressed
Dropsafe Prep Pads	Alcohol Antiseptic Pads	16	suppressed
Latanoprost	Latanoprost	16	suppressed
Procrit	Epoetin Alfa	16	suppressed
Timolol Maleate	Timolol Maleate	16	suppressed
Acyclovir	Acyclovir	15	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	15	suppressed
Albuterol Sulfate	Albuterol Sulfate	15	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	15	suppressed
Ropinirole Hcl	Ropinirole Hcl	15	suppressed
Tizanidine Hcl	Tizanidine Hcl	15	suppressed
Tresiba Flextouch U-200	Insulin Degludec	15	suppressed
Clonidine	Clonidine	14	suppressed
Comfort Ez Pen Needle	Pen Needle, Diabetic	14	suppressed
Glipizide Er	Glipizide	14	suppressed
Methocarbamol	Methocarbamol	14	suppressed
Nystatin	Nystatin	14	suppressed
Zonisamide	Zonisamide	14	suppressed
Eszopiclone	Eszopiclone	13	suppressed
Fluvoxamine Maleate	Fluvoxamine Maleate	13	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	13	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	13	suppressed
Nitroglycerin Patch	Nitroglycerin	13	suppressed
Repatha Syringe	Evolocumab	13	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	13	suppressed
Spiriva Handihaler	Tiotropium Bromide	13	suppressed
Depakote	Divalproex Sodium	12	suppressed
Glipizide-Metformin	Glipizide/Metformin Hcl	12	suppressed
Humalog Mix 50-50 Kwikpen	Insulin Lispro Protamin/Lispro	12	suppressed
Metformin Hcl Er	Metformin Hcl	12	suppressed
Morphine Sulfate Er	Morphine Sulfate	12	suppressed
Neupro	Rotigotine	12	suppressed
Prednisolone Acetate	Prednisolone Acetate	12	suppressed
Sucralfate	Sucralfate	12	suppressed
Trulicity	Dulaglutide	12	suppressed
Zafirlukast	Zafirlukast	12	suppressed
Alcohol Prep Pads	Alcohol Antiseptic Pads	11	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	11	suppressed
Bethanechol Chloride	Bethanechol Chloride	11	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	11	suppressed
Carbidopa-Levodopa Er	Carbidopa/Levodopa	11	suppressed
Combigan	Brimonidine Tartrate/Timolol	11	suppressed
Heparin Sodium	Heparin Sodium,porcine	11	suppressed
Levemir Flexpen	Insulin Detemir	11	suppressed
Midodrine Hcl	Midodrine Hcl	11	suppressed
Olanzapine	Olanzapine	11	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	11	suppressed
Rocklatan	Netarsudil Mesylat/Latanoprost	11	suppressed
Temazepam	Temazepam	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