Healthcare provider profile · identity verified

Chaim Silberberg, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology · SPRING VALLEY, NY · NPI 1265473540

Profile state: payments and partd 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

CMS Open Payments records show Chaim Silberberg, M.D. received $45.24 in general payments during 2025 across 2 reported records.

ACADIA Pharmaceuticals Inc accounted for 56.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

Otsuka America Pharmaceutical, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported NUEDEXTA as an associated drug or biological on 393 records involving 285 distinct recipient NPIs. Public Medicare Part D data also shows 26 claims for Nuedexta by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$45.24

2 reported records · 2 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported company	Canonical company	Amount	Share	Records	Year
ACADIA Pharmaceuticals Inc	Unresolved — no canonical attribution shown	$25.66	56.7%	1	2025
Otsuka America Pharmaceutical, Inc.	Unresolved — no canonical attribution shown	$19.58	43.3%	1	2025

What were the payments for?

Payment categories

Category	Amount	Records
Food and Beverage	$45.24	2

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported product	Type	Reported company	Related amount*	Records	Year
NUPLAZID Normalized: nuplazid	Drug	ACADIA Pharmaceuticals Inc	$25.66	1	2025
Source payment records 2025-09-10 · ACADIA Pharmaceuticals Inc · $25.66 · Open Payments source
REXULTI Normalized: rexulti	Drug	Otsuka America Pharmaceutical, Inc.	$19.58	1	2025
Source payment records 2025-10-22 · Otsuka America Pharmaceutical, Inc. · $19.58 · Open Payments source

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

Paying company	Payment year	Drug reported by same entity	Open Payments evidence	Part D	Claims	Beneficiaries
Otsuka America Pharmaceutical, Inc. Exact reporting entity; no affiliate inference	2025	NUEDEXTA open payments reported associated product	CMS Open Payments — General Payments 393 supporting records · 285 recipient NPIs · example record 1227268901	Nuedexta · 2024 Exact normalized brand match · 1 Part D row	26	suppressed by CMS

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	1626	335
Amlodipine Besylate	Amlodipine Besylate	1250	262
Eliquis	Apixaban	1229	166
Levothyroxine Sodium	Levothyroxine Sodium	840	172
Mirtazapine	Mirtazapine	773	153
Gabapentin	Gabapentin	683	142
Metformin Hcl	Metformin Hcl	648	133
Tamsulosin Hcl	Tamsulosin Hcl	640	148
Metoprolol Tartrate	Metoprolol Tartrate	611	133
Levetiracetam	Levetiracetam	520	88
Januvia	Sitagliptin Phosphate	508	59
Donepezil Hcl	Donepezil Hcl	505	91
Lisinopril	Lisinopril	473	91
Furosemide	Furosemide	467	159
Divalproex Sodium	Divalproex Sodium	458	69
Metoprolol Succinate	Metoprolol Succinate	405	104
Memantine Hcl	Memantine Hcl	377	66
Pantoprazole Sodium	Pantoprazole Sodium	370	142
Sertraline Hcl	Sertraline Hcl	367	82
Latanoprost	Latanoprost	357	70
Risperidone	Risperidone	326	60
Clopidogrel	Clopidogrel Bisulfate	319	70
Losartan Potassium	Losartan Potassium	318	90
Escitalopram Oxalate	Escitalopram Oxalate	298	71
Quetiapine Fumarate	Quetiapine Fumarate	280	77
Xarelto	Rivaroxaban	277	27
Trazodone Hcl	Trazodone Hcl	265	63
Simvastatin	Simvastatin	252	53
Valproic Acid	Valproic Acid (As Sodium Salt)	246	31
Potassium Chloride	Potassium Chloride	242	64
Famotidine	Famotidine	241	87
Hydralazine Hcl	Hydralazine Hcl	231	58
Montelukast Sodium	Montelukast Sodium	223	48
Nifedipine Er	Nifedipine	218	42
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	217	103
Finasteride	Finasteride	215	50
Jardiance	Empagliflozin	211	37
Baclofen	Baclofen	205	41
Carvedilol	Carvedilol	201	58
Olanzapine	Olanzapine	200	37
Rosuvastatin Calcium	Rosuvastatin Calcium	200	58
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	168	52
Omeprazole	Omeprazole	158	49
Myrbetriq	Mirabegron	151	11
Duloxetine Hcl	Duloxetine Hcl	149	42
Citalopram Hbr	Citalopram Hydrobromide	146	27
Buspirone Hcl	Buspirone Hcl	133	28
Hydrochlorothiazide	Hydrochlorothiazide	132	26
Allopurinol	Allopurinol	130	26
Entresto	Sacubitril/Valsartan	130	20
Prednisone	Prednisone	129	66
Silver Sulfadiazine	Silver Sulfadiazine	129	48
Nystatin	Nystatin	126	49
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	125	38
Paroxetine Hcl	Paroxetine Hcl	119	19
Aripiprazole	Aripiprazole	118	22
Ceftriaxone	Ceftriaxone Sodium	114	65
Mupirocin	Mupirocin	113	49
Benztropine Mesylate	Benztropine Mesylate	100	23
Sodium Chloride	0.9 % Sodium Chloride	95	45
Lorazepam	Lorazepam	92	38
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	90	66
Santyl	Collagenase Clostridium Hist.	90	43
Farxiga	Dapagliflozin Propanediol	86	16
Spironolactone	Spironolactone	83	25
Brimonidine Tartrate	Brimonidine Tartrate	79	19
Clozapine	Clozapine	79	12
Fluoxetine Hcl	Fluoxetine Hcl	78	12
Haloperidol	Haloperidol	77	13
Isosorbide Mononitrate Er	Isosorbide Mononitrate	76	14
Levofloxacin	Levofloxacin	75	57
Amiodarone Hcl	Amiodarone Hcl	74	21
Ssd	Silver Sulfadiazine	72	40
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	71	35
Doxycycline Hyclate	Doxycycline Hyclate	70	50
Dextrose 5%-0.45% Nacl	Dextrose 5 %-0.45 % Sod Chlord	69	38
Valsartan	Valsartan	68	19
Warfarin Sodium	Warfarin Sodium	67	11
Amantadine	Amantadine Hcl	66	13
Tradjenta	Linagliptin	66	suppressed
Cephalexin	Cephalexin	65	47
Labetalol Hcl	Labetalol Hcl	64	17
Midodrine Hcl	Midodrine Hcl	64	29
Triamcinolone Acetonide	Triamcinolone Acetonide	64	21
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	63	36
Insulin Lispro Kwikpen U-100	Insulin Lispro	63	37
Alendronate Sodium	Alendronate Sodium	60	13
Meropenem	Meropenem	58	26
Brimonidine Tartrate-Timolol	Brimonidine Tartrate/Timolol	55	suppressed
Torsemide	Torsemide	55	20
Enalapril Maleate	Enalapril Maleate	54	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	54	20
Insulin Lispro	Insulin Lispro	53	30
Tramadol Hcl	Tramadol Hcl	53	30
Albuterol Sulfate Hfa	Albuterol Sulfate	52	26
Ondansetron Hcl	Ondansetron Hcl	52	39
Vancomycin Hcl	Vancomycin Hcl	52	15
Lactulose	Lactulose	51	22
Levemir	Insulin Detemir	51	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	50	21
Digoxin	Digoxin	49	11
Haloperidol Decanoate	Haloperidol Decanoate	49	suppressed
Clonidine	Clonidine	48	suppressed
Ezetimibe	Ezetimibe	48	13
Lamotrigine	Lamotrigine	47	suppressed
Prednisolone Acetate	Prednisolone Acetate	47	12
Propranolol Hcl	Propranolol Hcl	47	12
Glipizide	Glipizide	46	11
Solu-Medrol	Methylprednisolone Sod Succ/Pf	46	31
Breo Ellipta	Fluticasone/Vilanterol	45	17
Sevelamer Hcl	Sevelamer Hcl	44	suppressed
Vascepa	Icosapent Ethyl	44	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	43	13
Alogliptin	Alogliptin Benzoate	41	18
Clonazepam	Clonazepam	41	19
Levemir Flexpen	Insulin Detemir	41	suppressed
Topiramate	Topiramate	41	suppressed
Bupropion Xl	Bupropion Hcl	40	12
Dorzolamide Hcl	Dorzolamide Hcl	39	suppressed
Fiasp Flextouch	Insulin Aspart (Niacinamide)	39	11
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	39	33
Oxycodone Hcl	Oxycodone Hcl	39	21
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	38	26
Oxybutynin Chloride Er	Oxybutynin Chloride	38	suppressed
Perphenazine	Perphenazine	38	suppressed
Pravastatin Sodium	Pravastatin Sodium	38	11
Alprazolam	Alprazolam	37	14
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	37	12
Symbicort	Budesonide/Formoterol Fumarate	37	suppressed
Trulicity	Dulaglutide	37	suppressed
Albuterol Sulfate	Albuterol Sulfate	36	21
Ciprofloxacin Hcl	Ciprofloxacin Hcl	36	26
Gemtesa	Vibegron	36	suppressed
Hydroxyurea	Hydroxyurea	36	suppressed
Incruse Ellipta	Umeclidinium Bromide	36	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	36	20
Venlafaxine Hcl Er	Venlafaxine Hcl	36	suppressed
Sucralfate	Sucralfate	35	suppressed
Methimazole	Methimazole	34	suppressed
Atenolol	Atenolol	33	suppressed
Diclofenac Sodium	Diclofenac Sodium	33	21
Metformin Hcl Er	Metformin Hcl	33	14
Tizanidine Hcl	Tizanidine Hcl	33	suppressed
Invokana	Canagliflozin	32	suppressed
Procrit	Epoetin Alfa	32	suppressed
Valproic Acid	Valproic Acid	32	suppressed
Fluticasone Propionate	Fluticasone Propionate	31	18
Ketorolac Tromethamine	Ketorolac Tromethamine	31	suppressed
Phenytoin	Phenytoin	31	suppressed
Restasis	Cyclosporine	31	suppressed
Invega Sustenna	Paliperidone Palmitate	30	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	30	suppressed
Piperacillin-Tazobactam	Piperacillin Sodium/Tazobactam	30	14
Sodium Chloride	Sodium Chloride 0.45 %	30	24
Timolol Maleate	Timolol Maleate	30	suppressed
Azithromycin	Azithromycin	29	21
Lantus	Insulin Glargine,hum.Rec.Anlog	29	14
Methenamine Hippurate	Methenamine Hippurate	29	suppressed
Nystop	Nystatin	29	14
Linzess	Linaclotide	28	11
Brilinta	Ticagrelor	27	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	27	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	27	suppressed
Hydrocortisone	Hydrocortisone	27	14
Movantik	Naloxegol Oxalate	27	suppressed
Oxcarbazepine	Oxcarbazepine	27	suppressed
Carbidopa-Levodopa Er	Carbidopa/Levodopa	26	suppressed
Fluconazole	Fluconazole	26	21
Lidocaine Hcl	Lidocaine Hcl	26	22
Metronidazole	Metronidazole	26	16
Nuedexta	Dextromethorphan Hbr/Quinidine	26	suppressed
Ozempic	Semaglutide	26	11
Primidone	Primidone	26	suppressed
Travoprost	Travoprost	26	suppressed
Ammonium Lactate	Ammonium Lactate	25	16
Amoxicillin	Amoxicillin	25	18
Divalproex Sodium Er	Divalproex Sodium	25	suppressed
Lokelma	Sodium Zirconium Cyclosilicate	25	11
Metoclopramide Hcl	Metoclopramide Hcl	25	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	25	suppressed
Pregabalin	Pregabalin	25	suppressed
Novolog Flexpen	Insulin Aspart	24	suppressed
Arnuity Ellipta	Fluticasone Furoate	23	suppressed
Clonidine Hcl	Clonidine Hcl	23	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	23	suppressed
Fingolimod	Fingolimod Hcl	23	suppressed
Haloperidol Lactate	Haloperidol Lactate	23	suppressed
Paliperidone Er	Paliperidone	23	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	23	suppressed
Tresiba Flextouch U-100	Insulin Degludec	23	suppressed
Budesonide	Budesonide	22	12
Chlorthalidone	Chlorthalidone	22	suppressed
Humalog Kwikpen U-100	Insulin Lispro	22	12
Lacosamide	Lacosamide	22	12
Admelog Solostar	Insulin Lispro	21	suppressed
Bupropion Hcl	Bupropion Hcl	21	suppressed
Enulose	Lactulose	21	suppressed
Metronidazole	Metronidazole/Sodium Chloride	21	suppressed
Ondansetron Hcl	Ondansetron Hcl/Pf	21	16
Cyclosporine	Cyclosporine	20	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	20	16
Fluticasone-Vilanterol	Fluticasone/Vilanterol	20	15
Silodosin	Silodosin	20	suppressed
Sps	Sodium Polystyrene Sulfon/Sorb	20	14
Ventolin Hfa	Albuterol Sulfate	20	suppressed
Cefuroxime	Cefuroxime Axetil	19	16
Chlorhexidine Gluconate	Chlorhexidine Gluconate	19	suppressed
Gemfibrozil	Gemfibrozil	19	suppressed
Ipratropium Bromide	Ipratropium Bromide	19	suppressed
Memantine Hcl Er	Memantine Hcl	19	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	19	suppressed
Diltiazem Hcl	Diltiazem Hcl	18	suppressed
Securesafe Pen Needle	Pen Needle, Diabetic, Safety	18	15
Dorzolamide-Timolol	Dorzolamide/Timolol/Pf	17	suppressed
Heparin Sodium	Heparin Sodium,porcine	17	suppressed
Lumigan	Bimatoprost	17	suppressed
Risperdal Consta	Risperidone Microspheres	17	suppressed
Bumetanide	Bumetanide	16	suppressed
Ertapenem	Ertapenem Sodium	16	suppressed
Fluticasone Propionate Hfa	Fluticasone Propionate	16	suppressed
Ofloxacin	Ofloxacin	16	suppressed
Ursodiol	Ursodiol	16	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	15	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	15	suppressed
Ketoconazole	Ketoconazole	15	suppressed
Meloxicam	Meloxicam	15	suppressed
Nitroglycerin	Nitroglycerin	15	13
Ondansetron Odt	Ondansetron	15	13
Ranolazine Er	Ranolazine	15	suppressed
Rivastigmine	Rivastigmine	15	suppressed
Semglee (Yfgn) Pen	Insulin Glargine-Yfgn	15	suppressed
Vyzulta	Latanoprostene Bunod	15	suppressed
Alcohol Prep Pads	Alcohol Antiseptic Pads	14	12
Ciclopirox	Ciclopirox Olamine	14	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	14	suppressed
Dropsafe Pen Needle	Pen Needle, Diabetic, Safety	14	suppressed
Econazole Nitrate	Econazole Nitrate	14	suppressed
Fluphenazine Hcl	Fluphenazine Hcl	14	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	14	suppressed
Janumet	Sitagliptin Phos/Metformin Hcl	14	suppressed
Nyamyc	Nystatin	14	suppressed
Olmesartan-Amlodipine-Hctz	Olmesartan/Amlodipin/Hcthiazid	14	suppressed
Tivicay	Dolutegravir Sodium	14	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	14	suppressed
Alphagan P	Brimonidine Tartrate	13	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	13	suppressed
Anastrozole	Anastrozole	13	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	13	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	13	suppressed
Dalfampridine Er	Dalfampridine	13	suppressed
Dapagliflozin	Dapagliflozin Propanediol	13	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	13	suppressed
Naproxen	Naproxen	13	suppressed
Rybelsus	Semaglutide	13	suppressed
Simbrinza	Brinzolamide/Brimonidine Tart	13	suppressed
Trexall	Methotrexate Sodium	13	suppressed
Brinzolamide	Brinzolamide	12	suppressed
Bupropion Hcl Sr	Bupropion Hcl	12	suppressed
Calcium Acetate	Calcium Acetate	12	suppressed
Clobazam	Clobazam	12	suppressed
Clozapine Odt	Clozapine	12	suppressed
Desmopressin Acetate	Desmopressin Acetate	12	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	12	suppressed
Icosapent Ethyl	Icosapent Ethyl	12	suppressed
Insulin Aspart Flexpen	Insulin Aspart	12	suppressed
Levalbuterol Hcl	Levalbuterol Hcl	12	suppressed
Levobunolol Hcl	Levobunolol Hcl	12	suppressed
Liraglutide	Liraglutide	12	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	12	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	11	suppressed
Carbamazepine Er	Carbamazepine	11	suppressed
Dutasteride	Dutasteride	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	$45.24 · 2 records	ACADIA Pharmaceuticals Inc	NUPLAZID, REXULTI	1	—
2024	—	—	—	—	Complete

Questions to ask

Questions you could discuss with your doctor

How do you evaluate evidence when you have a financial relationship with Otsuka America Pharmaceutical, Inc.?
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