Healthcare provider profile · identity verified

Nader Shakir, DO

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Psychiatry · FONTANA, CA · NPI 1750811535

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 Nader Shakir, DO received $270.42 in general payments during 2025 across 11 reported records.

Alkermes, Inc. accounted for 31.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 9 associated products.

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

Alkermes, 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 VIVITROL as an associated drug or biological on 9533 records involving 5661 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Vivitrol 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 63 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 23 claims for Abilify Maintena by this doctor in 2024.

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

Payment overview · 2025

General Payments

$270.42

11 reported records · 7 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
Alkermes, Inc. Unresolved — no canonical attribution shown $83.7131.0%32025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $48.5718.0%22025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $41.5615.4%22025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $28.4510.5%12025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $25.449.4%12025
Janssen Pharmaceuticals, Inc Unresolved — no canonical attribution shown $21.848.1%12025
Tris Pharma Inc Unresolved — no canonical attribution shown $20.857.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$270.4211

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
VIVITROL
Normalized: vivitrol
Drug Alkermes, Inc. $51.21 2 2025
Source payment records
UZEDY
Normalized: uzedy
Drug Teva Pharmaceuticals USA, Inc. $48.57 2 2025
Source payment records
ABILIFY ASIMTUFII
Normalized: abilify asimtufii
Drug Otsuka America Pharmaceutical, Inc. $41.56 2 2025
Source payment records
ARISTADA
Normalized: aristada
Drug Alkermes, Inc. $32.50 1 2025
Source payment records
LYBALVI
Normalized: lybalvi
Drug Alkermes, Inc. $32.50 1 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $28.45 1 2025
Source payment records
COBENFY
Normalized: cobenfy
Drug E.R. Squibb & Sons, L.L.C. $25.44 1 2025
Source payment records
INVEGA SUSTENNA
Normalized: invega sustenna
Drug Janssen Pharmaceuticals, Inc $21.84 1 2025
Source payment records
Onyda XR
Normalized: onyda xr
Drug Tris Pharma Inc $20.85 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
INVEGA SUSTENNA
invega sustenna
2025 Invega Sustenna 2024 63 exact normalized Medicare Part D
VIVITROL
vivitrol
2025 Vivitrol 2024 13
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
Alkermes, Inc.
Exact reporting entity; no affiliate inference
2025 VIVITROL
open payments reported associated product
CMS Open Payments — General Payments
9533 supporting records · 5661 recipient NPIs · example record 1222428584
Vivitrol · 2024
Exact normalized brand match · 1 Part D row
13 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
63 11
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
23 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
OlanzapineOlanzapine14521
Quetiapine FumarateQuetiapine Fumarate10920
Benztropine MesylateBenztropine Mesylate10116
Trazodone HclTrazodone Hcl10117
RisperidoneRisperidone88suppressed
Sertraline HclSertraline Hcl8613
Bupropion XlBupropion Hcl66suppressed
AripiprazoleAripiprazole63suppressed
Invega SustennaPaliperidone Palmitate6311
Metformin Hcl ErMetformin Hcl5817
HaloperidolHaloperidol5713
Haloperidol DecanoateHaloperidol Decanoate55suppressed
Divalproex Sodium ErDivalproex Sodium51suppressed
Hydroxyzine PamoateHydroxyzine Pamoate46suppressed
Buspirone HclBuspirone Hcl42suppressed
Escitalopram OxalateEscitalopram Oxalate42suppressed
MirtazapineMirtazapine40suppressed
ClonazepamClonazepam37suppressed
Prazosin HclPrazosin Hcl37suppressed
Lithium CarbonateLithium Carbonate32suppressed
Venlafaxine Hcl ErVenlafaxine Hcl32suppressed
Lithium Carbonate ErLithium Carbonate25suppressed
Clonidine HclClonidine Hcl24suppressed
Fluoxetine HclFluoxetine Hcl24suppressed
Olanzapine-Fluoxetine HclOlanzapine/Fluoxetine Hcl24suppressed
Abilify MaintenaAripiprazole23suppressed
Duloxetine HclDuloxetine Hcl22suppressed
LamotrigineLamotrigine21suppressed
Hydroxyzine HclHydroxyzine Hcl20suppressed
Divalproex SodiumDivalproex Sodium19suppressed
ThiothixeneThiothixene19suppressed
OzempicSemaglutide18suppressed
LorazepamLorazepam16suppressed
Propranolol HclPropranolol Hcl16suppressed
FenofibrateFenofibrate13suppressed
Lurasidone HclLurasidone Hcl13suppressed
Valproic AcidValproic Acid13suppressed
VivitrolNaltrexone Microspheres13suppressed
Amitriptyline HclAmitriptyline Hcl12suppressed
Valproic AcidValproic Acid (As Sodium Salt)12suppressed
Vilazodone HclVilazodone Hcl12suppressed
Paroxetine HclParoxetine 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 $270.42 · 11 records Alkermes, Inc. ABILIFY ASIMTUFII, ARISTADA, CAPLYTA, COBENFY, INVEGA SUSTENNA, LYBALVI, Onyda XR, UZEDY, VIVITROL 3
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