Healthcare provider profile · identity verified

Oscar Klein, M.D.

Infectious Disease · NEW YORK, NY · NPI 1962546887

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

BrandGenericClaimsBeneficiaries
BiktarvyBictegrav/Emtricit/Tenofov Ala46551
Atorvastatin CalciumAtorvastatin Calcium36157
TivicayDolutegravir Sodium31532
Rosuvastatin CalciumRosuvastatin Calcium29247
Amlodipine BesylateAmlodipine Besylate27638
PrezcobixDarunavir/Cobicistat24124
DescovyEmtricitabine/Tenofov Alafenam23426
TriumeqAbacavir/Dolutegravir/Lamivudi21822
LisinoprilLisinopril20432
OdefseyEmtricitab/Rilpiviri/Tenof Ala17018
Metoprolol SuccinateMetoprolol Succinate14723
Albuterol Sulfate HfaAlbuterol Sulfate13320
GabapentinGabapentin12917
HydrochlorothiazideHydrochlorothiazide12818
ValacyclovirValacyclovir Hcl12219
GenvoyaElviteg/Cob/Emtri/Tenof Alafen11112
Zolpidem TartrateZolpidem Tartrate9516
OmeprazoleOmeprazole9114
Tamsulosin HclTamsulosin Hcl9115
EzetimibeEzetimibe8413
Bupropion XlBupropion Hcl81suppressed
Fluticasone PropionateFluticasone Propionate7813
EliquisApixaban76suppressed
Metformin Hcl ErMetformin Hcl73suppressed
AcyclovirAcyclovir70suppressed
SymtuzaDarunavir/Cob/Emtri/Tenof Alaf70suppressed
Montelukast SodiumMontelukast Sodium67suppressed
Potassium ChloridePotassium Chloride6511
Metformin HclMetformin Hcl59suppressed
Hydroxyzine HclHydroxyzine Hcl5811
JulucaDolutegravir/Rilpivirine57suppressed
Vitamin D2Ergocalciferol (Vitamin D2)56suppressed
Doxycycline HyclateDoxycycline Hyclate5514
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide55suppressed
LevetiracetamLevetiracetam53suppressed
Duloxetine HclDuloxetine Hcl52suppressed
MaravirocMaraviroc52suppressed
DovatoDolutegravir Sodium/Lamivudine51suppressed
Janumet XrSitagliptin Phos/Metformin Hcl50suppressed
Levothyroxine SodiumLevothyroxine Sodium49suppressed
LoperamideLoperamide Hcl48suppressed
Nifedipine ErNifedipine48suppressed
NaproxenNaproxen4711
DarunavirDarunavir46suppressed
KetoconazoleKetoconazole46suppressed
IbuprofenIbuprofen4516
Pantoprazole SodiumPantoprazole Sodium45suppressed
JardianceEmpagliflozin44suppressed
Losartan PotassiumLosartan Potassium4411
VascepaIcosapent Ethyl44suppressed
FurosemideFurosemide42suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen42suppressed
AbacavirAbacavir Sulfate39suppressed
LamivudineLamivudine39suppressed
JanuviaSitagliptin Phosphate38suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium37suppressed
FinasterideFinasteride37suppressed
ChlorthalidoneChlorthalidone36suppressed
Testosterone CypionateTestosterone Cypionate35suppressed
EdurantRilpivirine Hcl34suppressed
IsentressRaltegravir Potassium34suppressed
Alendronate SodiumAlendronate Sodium32suppressed
Abacavir-LamivudineAbacavir Sulfate/Lamivudine31suppressed
AtenololAtenolol31suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl30suppressed
Atazanavir SulfateAtazanavir Sulfate29suppressed
FamotidineFamotidine29suppressed
PregabalinPregabalin29suppressed
OzempicSemaglutide28suppressed
Pioglitazone HclPioglitazone Hcl28suppressed
Terbinafine HclTerbinafine Hcl27suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril26suppressed
Breo ElliptaFluticasone/Vilanterol24suppressed
Diclofenac SodiumDiclofenac Sodium24suppressed
Lopinavir-RitonavirLopinavir/Ritonavir24suppressed
VemlidyTenofovir Alafenamide24suppressed
RitonavirRitonavir23suppressed
TestosteroneTestosterone23suppressed
GlipizideGlipizide22suppressed
Nevirapine ErNevirapine22suppressed
Sertraline HclSertraline Hcl22suppressed
Azelastine HclAzelastine Hcl21suppressed
ClopidogrelClopidogrel Bisulfate20suppressed
Escitalopram OxalateEscitalopram Oxalate20suppressed
NadololNadolol20suppressed
Quetiapine FumarateQuetiapine Fumarate20suppressed
Triamcinolone AcetonideTriamcinolone Acetonide20suppressed
Ammonium LactateAmmonium Lactate19suppressed
PrezistaDarunavir19suppressed
ShingrixVaricella-Zoster Ge/As01b/Pf1914
TelmisartanTelmisartan19suppressed
CarvedilolCarvedilol18suppressed
EntrestoSacubitril/Valsartan18suppressed
Pravastatin SodiumPravastatin Sodium18suppressed
DiazepamDiazepam17suppressed
Trazodone HclTrazodone Hcl17suppressed
Amitriptyline HclAmitriptyline Hcl16suppressed
Citalopram HbrCitalopram Hydrobromide16suppressed
Prochlorperazine MaleateProchlorperazine Maleate16suppressed
SimvastatinSimvastatin16suppressed
SpironolactoneSpironolactone16suppressed
Chlorhexidine GluconateChlorhexidine Gluconate15suppressed
SelzentryMaraviroc15suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim15suppressed
TorsemideTorsemide15suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter15suppressed
XiidraLifitegrast15suppressed
ClotrimazoleClotrimazole14suppressed
DronabinolDronabinol14suppressed
Enalapril MaleateEnalapril Maleate14suppressed
LamotrigineLamotrigine14suppressed
Memantine HclMemantine Hcl14suppressed
MirtazapineMirtazapine14suppressed
Olmesartan MedoxomilOlmesartan Medoxomil14suppressed
Propranolol HclPropranolol Hcl14suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr13suppressed
CalcitriolCalcitriol13suppressed
ClonazepamClonazepam13suppressed
Efavirenz-Emtric-Tenofov DisopEfavirenz/Emtricit/Tenofovr Df13suppressed
HydrocortisoneHydrocortisone13suppressed
Oxycodone HclOxycodone Hcl13suppressed
SynthroidLevothyroxine Sodium13suppressed
TadalafilTadalafil13suppressed
ZafirlukastZafirlukast13suppressed
AptivusTipranavir12suppressed
Benazepril HclBenazepril Hcl12suppressed
CrestorRosuvastatin Calcium12suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl12suppressed
Cyproheptadine HclCyproheptadine Hcl12suppressed
EndocetOxycodone Hcl/Acetaminophen12suppressed
Glipizide ErGlipizide12suppressed
MeloxicamMeloxicam12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
MounjaroTirzepatide12suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic12suppressed
Paroxetine HclParoxetine Hcl12suppressed
Xigduo XrDapaglifloz Propaned/Metformin12suppressed
CelecoxibCelecoxib11suppressed
Diltiazem 24hr ErDiltiazem Hcl11suppressed
Divalproex Sodium ErDivalproex Sodium11suppressed
Ipratropium BromideIpratropium Bromide11suppressed
MethocarbamolMethocarbamol11suppressed
OxcarbazepineOxcarbazepine11suppressed
Zolpidem Tartrate ErZolpidem Tartrate11suppressed

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.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
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