Healthcare provider profile · identity verified

Sai Chundu, MD

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Psychiatry · CORONA, CA · NPI 1609968460

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 Sai Chundu, MD received $1,276.39 in general payments during 2025 across 61 reported records.

ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) accounted for 15.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 20 associated products.

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

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 76 claims for Invega Sustenna by this doctor in 2024.

Neurocrine BioSciences, 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 INGREZZA as an associated drug or biological on 126456 records involving 27390 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Ingrezza 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 20 claims for Abilify Maintena 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 REXULTI as an associated drug or biological on 160756 records involving 46288 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Rexulti 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 as an associated drug or biological on 28 records involving 15 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Austedo by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,276.39

61 reported records · 14 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
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $201.0815.8%92025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $174.4813.7%82025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $155.5012.2%72025
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $150.7611.8%112025
Janssen Pharmaceuticals, Inc Unresolved — no canonical attribution shown $121.109.5%42025
ABBVIE INC. Unresolved — no canonical attribution shown $81.966.4%42025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $79.116.2%42025
Alkermes, Inc. Unresolved — no canonical attribution shown $65.265.1%32025
Neos Therapeutics, LP Unresolved — no canonical attribution shown $61.304.8%32025
Collegium Pharmaceutical, Inc. Unresolved — no canonical attribution shown $59.124.6%32025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $55.694.4%22025
Vanda Pharmaceuticals Inc. Unresolved — no canonical attribution shown $34.372.7%12025
Tris Pharma Inc Unresolved — no canonical attribution shown $21.471.7%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $15.191.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,276.3961

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
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $201.08 9 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Otsuka America Pharmaceutical, Inc. $174.48 8 2025
Source payment records
INGREZZA
Normalized: ingrezza
Drug Neurocrine BioSciences, Inc. $150.76 11 2025
Source payment records
INVEGA SUSTENNA
Normalized: invega sustenna
Drug Janssen Pharmaceuticals, Inc $93.51 3 2025
Source payment records
INVEGA TRINZA
Normalized: invega trinza
Drug Janssen Pharmaceuticals, Inc $93.51 3 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $81.96 4 2025
Source payment records
COBENFY
Normalized: cobenfy
Drug E.R. Squibb & Sons, L.L.C. $79.11 4 2025
Source payment records
UZEDY
Normalized: uzedy
Drug Teva Pharmaceuticals USA, Inc. $79.11 4 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $76.39 3 2025
Source payment records
ARISTADA
Normalized: aristada
Drug Alkermes, Inc. $65.26 3 2025
Source payment records
LYBALVI
Normalized: lybalvi
Drug Alkermes, Inc. $65.26 3 2025
Source payment records
Jornay PM
Normalized: jornay pm
Drug Collegium Pharmaceutical, Inc. $59.12 3 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $55.69 2 2025
Source payment records
Adzenys XR-ODT
Normalized: adzenys xr odt
Drug Neos Therapeutics, LP $43.17 2 2025
Source payment records
FANAPT
Normalized: fanapt
Drug Vanda Pharmaceuticals Inc. $34.37 1 2025
Source payment records
HETLIOZ
Normalized: hetlioz
Drug Vanda Pharmaceuticals Inc. $34.37 1 2025
Source payment records
SPRAVATO
Normalized: spravato
Drug Janssen Pharmaceuticals, Inc $27.59 1 2025
Source payment records
Dyanavel XR
Normalized: dyanavel xr
Drug Tris Pharma Inc $21.47 1 2025
Source payment records
Cotempla XR-ODT
Normalized: cotempla xr odt
Drug Neos Therapeutics, LP $18.13 1 2025
Source payment records
TRINTELLIX
Normalized: trintellix
Drug Takeda Pharmaceuticals U.S.A., Inc. $15.19 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
INGREZZA
ingrezza
2025 Ingrezza 2024 27
Beneficiary count suppressed
exact normalized Medicare Part D
INVEGA SUSTENNA
invega sustenna
2025 Invega Sustenna 2024 76
Beneficiary count suppressed
exact normalized Medicare Part D
REXULTI
rexulti
2025 Rexulti 2024 11
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
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
76 suppressed by CMS
Neurocrine BioSciences, Inc.
Exact reporting entity; no affiliate inference
2025 INGREZZA
open payments reported associated product
CMS Open Payments — General Payments
126456 supporting records · 27390 recipient NPIs · example record 1242766729
Ingrezza · 2024
Exact normalized brand match · 1 Part D row
27 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
20 suppressed by CMS
Otsuka America Pharmaceutical, Inc.
Exact reporting entity; no affiliate inference
2025 REXULTI
open payments reported associated product
CMS Open Payments — General Payments
160756 supporting records · 46288 recipient NPIs · example record 1227267708
Rexulti · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
Teva Pharmaceuticals USA, Inc.
Exact reporting entity; no affiliate inference
2025 AUSTEDO
open payments reported associated product
CMS Open Payments — General Payments
28 supporting records · 15 recipient NPIs · example record 1247249192
Austedo · 2024
Exact normalized brand match · 1 Part D row
11 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 Fumarate52299
AripiprazoleAripiprazole461118
Trazodone HclTrazodone Hcl383104
Bupropion XlBupropion Hcl37290
Escitalopram OxalateEscitalopram Oxalate34388
LamotrigineLamotrigine30767
Duloxetine HclDuloxetine Hcl30370
Fluoxetine HclFluoxetine Hcl30172
RisperidoneRisperidone25356
Hydroxyzine HclHydroxyzine Hcl22973
LorazepamLorazepam22341
AlprazolamAlprazolam20540
Sertraline HclSertraline Hcl19461
ClonazepamClonazepam16625
Venlafaxine Hcl ErVenlafaxine Hcl15834
OlanzapineOlanzapine13223
OxcarbazepineOxcarbazepine11521
Benztropine MesylateBenztropine Mesylate10119
Divalproex SodiumDivalproex Sodium9618
Paroxetine HclParoxetine Hcl9424
Buspirone HclBuspirone Hcl8831
Zolpidem TartrateZolpidem Tartrate7914
MirtazapineMirtazapine7816
Bupropion Hcl SrBupropion Hcl7622
Invega SustennaPaliperidone Palmitate76suppressed
GabapentinGabapentin7417
Divalproex Sodium ErDivalproex Sodium7217
Citalopram HbrCitalopram Hydrobromide6117
Methylphenidate HclMethylphenidate Hcl55suppressed
Doxepin HclDoxepin Hcl50suppressed
TopiramateTopiramate5012
ClozapineClozapine44suppressed
DiazepamDiazepam43suppressed
Ziprasidone HclZiprasidone Hcl39suppressed
PerphenazinePerphenazine37suppressed
Lithium Carbonate ErLithium Carbonate35suppressed
Prazosin HclPrazosin Hcl33suppressed
Lithium CarbonateLithium Carbonate3113
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine27suppressed
IngrezzaValbenazine Tosylate27suppressed
Nortriptyline HclNortriptyline Hcl25suppressed
TemazepamTemazepam25suppressed
RamelteonRamelteon24suppressed
Haloperidol DecanoateHaloperidol Decanoate23suppressed
Lurasidone HclLurasidone Hcl23suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate21suppressed
Hydroxyzine PamoateHydroxyzine Pamoate21suppressed
Methylphenidate Hcl Er (Cd)Methylphenidate Hcl21suppressed
Abilify MaintenaAripiprazole20suppressed
HaloperidolHaloperidol19suppressed
VyvanseLisdexamfetamine Dimesylate19suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine18suppressed
Amitriptyline HclAmitriptyline Hcl15suppressed
Clonidine HclClonidine Hcl15suppressed
ModafinilModafinil13suppressed
TriazolamTriazolam13suppressed
Trifluoperazine HclTrifluoperazine Hcl13suppressed
Bupropion HclBupropion Hcl12suppressed
Valproic AcidValproic Acid (As Sodium Salt)12suppressed
AustedoDeutetrabenazine11suppressed
Clomipramine HclClomipramine Hcl11suppressed
Clonidine Hcl ErClonidine Hcl11suppressed
Levothyroxine SodiumLevothyroxine Sodium11suppressed
Naltrexone HclNaltrexone Hcl11suppressed
OxazepamOxazepam11suppressed
Protriptyline HclProtriptyline Hcl11suppressed
RexultiBrexpiprazole11suppressed
Venlafaxine HclVenlafaxine 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 $1,276.39 · 61 records ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) ARISTADA, AUSTEDO XR, Adzenys XR-ODT, Auvelity, CAPLYTA, COBENFY, Cotempla XR-ODT, Dyanavel XR, FANAPT, HETLIOZ, INGREZZA, INVEGA SUSTENNA, INVEGA TRINZA, Jornay PM, LYBALVI, REXULTI, SPRAVATO, TRINTELLIX, UZEDY, VRAYLAR 5
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