Healthcare provider profile · identity verified

David Nathan Greenblum, MD

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Psychiatry · KENSINGTON, MD · NPI 1467462713

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 David Nathan Greenblum, MD received $1,678.54 in general payments during 2025 across 77 reported records.

E.R. Squibb & Sons, L.L.C. accounted for 23.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 17 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Austedo Xr, Caplyta, Invega Sustenna, Vraylar.

ABBVIE 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 VRAYLAR as an associated drug or biological on 377741 records involving 62704 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Vraylar by this doctor in 2024.

ITI, Inc. (d/b/a Intra-Cellular Therapies, 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 CAPLYTA as an associated drug or biological on 211855 records involving 46143 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Caplyta by this doctor in 2024.

Janssen Pharmaceuticals, 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 Caplyta as an associated drug or biological on 11 records involving 9 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Caplyta by this doctor in 2024.

Janssen Pharmaceuticals, 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 INVEGA SUSTENNA as an associated drug or biological on 39068 records involving 11966 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Invega Sustenna by this doctor in 2024.

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 ABILIFY MAINTENA as an associated drug or biological on 27924 records involving 10497 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Abilify Maintena by this doctor in 2024.

Teva Pharmaceuticals USA, 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 AUSTEDO XR as an associated drug or biological on 86263 records involving 23643 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Austedo Xr by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,678.54

77 reported records · 12 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
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $400.5523.9%182025
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $303.6618.1%82025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $178.6410.6%112025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $157.659.4%72025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $140.668.4%72025
ABBVIE INC. Unresolved — no canonical attribution shown $124.287.4%62025
Supernus Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $118.287.0%102025
Indivior Inc. Unresolved — no canonical attribution shown $104.566.2%42025
Braeburn Inc. Unresolved — no canonical attribution shown $59.673.5%22025
Janssen Pharmaceuticals, Inc Unresolved — no canonical attribution shown $54.193.2%22025
Vanda Pharmaceuticals Inc. Unresolved — no canonical attribution shown $20.251.2%12025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $16.151.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,678.5477

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
COBENFY
Normalized: cobenfy
Drug E.R. Squibb & Sons, L.L.C. $400.55 18 2025
Source payment records
INGREZZA
Normalized: ingrezza
Drug Neurocrine BioSciences, Inc. $303.66 8 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $140.66 7 2025
Source payment records
UZEDY
Normalized: uzedy
Drug Teva Pharmaceuticals USA, Inc. $131.13 8 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $124.28 6 2025
Source payment records
Qelbree
Normalized: qelbree
Drug Supernus Pharmaceuticals, Inc. $118.28 10 2025
Source payment records
SUBLOCADE
Normalized: sublocade
Drug Indivior Inc. $104.56 4 2025
Source payment records
ABILIFY ASIMTUFII
Normalized: abilify asimtufii
Drug Otsuka America Pharmaceutical, Inc. $79.26 3 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Otsuka America Pharmaceutical, Inc. $78.39 4 2025
Source payment records
BRIXADI
Normalized: brixadi
Drug Braeburn Inc. $59.67 2 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $47.51 3 2025
Source payment records
INVEGA SUSTENNA
Normalized: invega sustenna
Drug Janssen Pharmaceuticals, Inc $35.38 1 2025
Source payment records
INVEGA TRINZA
Normalized: invega trinza
Drug Janssen Pharmaceuticals, Inc $35.38 1 2025
Source payment records
FANAPT
Normalized: fanapt
Drug Vanda Pharmaceuticals Inc. $20.25 1 2025
Source payment records
HETLIOZ
Normalized: hetlioz
Drug Vanda Pharmaceuticals Inc. $20.25 1 2025
Source payment records
SPRAVATO
Normalized: spravato
Drug Janssen Pharmaceuticals, Inc $18.81 1 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $16.15 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

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
AUSTEDO XR
austedo xr
2025 Austedo Xr 2024 18
Beneficiary count suppressed
exact normalized Medicare Part D
CAPLYTA
caplyta
2025 Caplyta 2024 29
Beneficiary count suppressed
exact normalized Medicare Part D
INVEGA SUSTENNA
invega sustenna
2025 Invega Sustenna 2024 23
Beneficiary count suppressed
exact normalized Medicare Part D
VRAYLAR
vraylar
2025 Vraylar 2024 14
Beneficiary count suppressed
exact normalized Medicare Part D

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 companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 VRAYLAR
open payments reported associated product
CMS Open Payments — General Payments
377741 supporting records · 62704 recipient NPIs · example record 1201352550
Vraylar · 2024
Exact normalized brand match · 1 Part D row
14 suppressed by CMS
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
Exact reporting entity; no affiliate inference
2025 CAPLYTA
open payments reported associated product
CMS Open Payments — General Payments
211855 supporting records · 46143 recipient NPIs · example record 1241243071
Caplyta · 2024
Exact normalized brand match · 1 Part D row
29 suppressed by CMS
Janssen Pharmaceuticals, Inc
Exact reporting entity; no affiliate inference
2025 Caplyta
open payments reported associated product
CMS Open Payments — General Payments
11 supporting records · 9 recipient NPIs · example record 1174547314
Caplyta · 2024
Exact normalized brand match · 1 Part D row
29 suppressed by CMS
Janssen Pharmaceuticals, Inc
Exact reporting entity; no affiliate inference
2025 INVEGA SUSTENNA
open payments reported associated product
CMS Open Payments — General Payments
39068 supporting records · 11966 recipient NPIs · example record 1174223262
Invega Sustenna · 2024
Exact normalized brand match · 1 Part D row
23 suppressed by CMS
Otsuka America Pharmaceutical, Inc.
Exact reporting entity; no affiliate inference
2025 ABILIFY MAINTENA
open payments reported associated product
CMS Open Payments — General Payments
27924 supporting records · 10497 recipient NPIs · example record 1227267721
Abilify Maintena · 2024
Exact normalized brand match · 1 Part D row
25 suppressed by CMS
Teva Pharmaceuticals USA, Inc.
Exact reporting entity; no affiliate inference
2025 AUSTEDO XR
open payments reported associated product
CMS Open Payments — General Payments
86263 supporting records · 23643 recipient NPIs · example record 1247244228
Austedo Xr · 2024
Exact normalized brand match · 1 Part D row
18 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

BrandGenericClaimsBeneficiaries
Quetiapine FumarateQuetiapine Fumarate16130
Sertraline HclSertraline Hcl11819
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl11230
ClonazepamClonazepam9917
Trazodone HclTrazodone Hcl8918
AripiprazoleAripiprazole8318
AlprazolamAlprazolam71suppressed
ClozapineClozapine60suppressed
GabapentinGabapentin6012
RisperidoneRisperidone60suppressed
LorazepamLorazepam58suppressed
Bupropion XlBupropion Hcl5219
Paroxetine HclParoxetine Hcl50suppressed
MirtazapineMirtazapine4315
Duloxetine HclDuloxetine Hcl42suppressed
OlanzapineOlanzapine4011
Divalproex SodiumDivalproex Sodium37suppressed
Fluoxetine HclFluoxetine Hcl3713
Escitalopram OxalateEscitalopram Oxalate3312
Benztropine MesylateBenztropine Mesylate32suppressed
Bupropion HclBupropion Hcl31suppressed
Quetiapine Fumarate ErQuetiapine Fumarate31suppressed
CaplytaLumateperone Tosylate29suppressed
Propranolol HclPropranolol Hcl28suppressed
Buspirone HclBuspirone Hcl26suppressed
Abilify MaintenaAripiprazole25suppressed
Venlafaxine Hcl ErVenlafaxine Hcl25suppressed
Invega SustennaPaliperidone Palmitate23suppressed
Lurasidone HclLurasidone Hcl20suppressed
Methylphenidate HclMethylphenidate Hcl20suppressed
Ziprasidone HclZiprasidone Hcl20suppressed
Hydroxyzine PamoateHydroxyzine Pamoate19suppressed
Austedo XrDeutetrabenazine18suppressed
Doxepin HclDoxepin Hcl16suppressed
Lithium Carbonate ErLithium Carbonate15suppressed
Metformin HclMetformin Hcl15suppressed
Prazosin HclPrazosin Hcl14suppressed
VraylarCariprazine Hcl14suppressed
LamotrigineLamotrigine13suppressed
EszopicloneEszopiclone12suppressed
Memantine HclMemantine Hcl11suppressed

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 $1,678.54 · 77 records E.R. Squibb & Sons, L.L.C. ABILIFY ASIMTUFII, AUSTEDO XR, Auvelity, BRIXADI, CAPLYTA, COBENFY, FANAPT, HETLIOZ, INGREZZA, INVEGA SUSTENNA, INVEGA TRINZA, Qelbree, REXULTI, SPRAVATO, SUBLOCADE, UZEDY, VRAYLAR 6
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