Healthcare provider profile · identity verified

Andrea Nissenbaum

Allopathic & Osteopathic Physicians|Internal Medicine · BROOKLYN, NY · NPI 1255342325

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 Andrea Nissenbaum received $45.30 in general payments during 2025 across 2 reported records.

Neurocrine BioSciences, Inc. accounted for 66.0% of that reported general-payment amount.

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

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

Payment overview · 2025

General Payments

$45.30

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 companyCanonical companyAmountShareRecordsYear
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $29.9266.0%12025
Alkermes, Inc. Unresolved — no canonical attribution shown $15.3834.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$45.302

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 productTypeReported companyRelated amount*RecordsYear
INGREZZA
Normalized: ingrezza
Drug Neurocrine BioSciences, Inc. $29.92 1 2025
Source payment records
LYBALVI
Normalized: lybalvi
Drug Alkermes, Inc. $15.38 1 2025
Source payment records

* 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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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
Atorvastatin CalciumAtorvastatin Calcium14738
Pantoprazole SodiumPantoprazole Sodium10919
Metformin Hcl ErMetformin Hcl9421
Amlodipine BesylateAmlodipine Besylate8925
Albuterol Sulfate HfaAlbuterol Sulfate6817
LisinoprilLisinopril64suppressed
Metoprolol SuccinateMetoprolol Succinate5812
JanuviaSitagliptin Phosphate5411
Metformin HclMetformin Hcl5411
Losartan PotassiumLosartan Potassium5316
GlimepirideGlimepiride47suppressed
GabapentinGabapentin46suppressed
Alcohol Prep PadsAlcohol Antiseptic Pads45suppressed
Levothyroxine SodiumLevothyroxine Sodium4411
Single Use SwabAlcohol Antiseptic Pads39suppressed
Rosuvastatin CalciumRosuvastatin Calcium3711
Tamsulosin HclTamsulosin Hcl3513
HydrochlorothiazideHydrochlorothiazide34suppressed
JardianceEmpagliflozin33suppressed
CelecoxibCelecoxib29suppressed
Tizanidine HclTizanidine Hcl27suppressed
Metoprolol TartrateMetoprolol Tartrate26suppressed
Montelukast SodiumMontelukast Sodium25suppressed
Vitamin D2Ergocalciferol (Vitamin D2)24suppressed
FinasterideFinasteride23suppressed
EzetimibeEzetimibe22suppressed
Labetalol HclLabetalol Hcl22suppressed
Fluticasone PropionateFluticasone Propionate21suppressed
ChlorthalidoneChlorthalidone18suppressed
TrulicityDulaglutide18suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic18suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip17suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog17suppressed
Easy Touch Alcohol Prep PadsAlcohol Antiseptic Pads16suppressed
FamotidineFamotidine16suppressed
MeloxicamMeloxicam16suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate15suppressed
Diclofenac SodiumDiclofenac Sodium14suppressed
IbuprofenIbuprofen14suppressed
Meclizine HclMeclizine Hcl14suppressed
Novolog Mix 70-30 FlexpenInsulin Aspart Prot/Insuln Asp14suppressed
Combivent RespimatIpratropium/Albuterol Sulfate13suppressed
AtenololAtenolol12suppressed

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 $45.30 · 2 records Neurocrine BioSciences, Inc. INGREZZA, LYBALVI
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