Healthcare provider profile · identity verified

John S Larson, APRN

Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner · LAFAYETTE, LA · NPI 1144783408

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 John S Larson, APRN received $373.02 in general payments during 2025 across 14 reported records.

Neurocrine BioSciences, Inc. accounted for 32.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 7 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Rexulti, 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 48 claims for Vraylar 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 14 claims for Rexulti by this doctor in 2024.

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

Payment overview · 2025

General Payments

$373.02

14 reported records · 6 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 $122.1832.8%42025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $113.0430.3%32025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $61.9916.6%32025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $38.0710.2%22025
Alkermes, Inc. Unresolved — no canonical attribution shown $23.286.2%12025
ABBVIE INC. Unresolved — no canonical attribution shown $14.463.9%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$301.5313
Education$71.491

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. $122.18 4 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Otsuka America Pharmaceutical, Inc. $61.99 3 2025
Source payment records
COBENFY
Normalized: cobenfy
Drug E.R. Squibb & Sons, L.L.C. $38.07 2 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $24.02 1 2025
Source payment records
VIVITROL
Normalized: vivitrol
Drug Alkermes, Inc. $23.28 1 2025
Source payment records
UZEDY
Normalized: uzedy
Drug Teva Pharmaceuticals USA, Inc. $17.53 1 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $14.46 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
REXULTI
rexulti
2025 Rexulti 2024 14
Beneficiary count suppressed
exact normalized Medicare Part D
VRAYLAR
vraylar
2025 Vraylar 2024 48 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
48 11
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
14 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
Buspirone HclBuspirone Hcl22533
Sertraline HclSertraline Hcl19931
Fluoxetine HclFluoxetine Hcl14915
Quetiapine FumarateQuetiapine Fumarate13923
Trazodone HclTrazodone Hcl13824
AripiprazoleAripiprazole13518
Hydroxyzine PamoateHydroxyzine Pamoate13224
OlanzapineOlanzapine10013
Duloxetine HclDuloxetine Hcl9715
Bupropion XlBupropion Hcl9516
ClonazepamClonazepam9414
Doxepin HclDoxepin Hcl87suppressed
Escitalopram OxalateEscitalopram Oxalate8512
LamotrigineLamotrigine8214
Lurasidone HclLurasidone Hcl8012
Venlafaxine Hcl ErVenlafaxine Hcl78suppressed
Benztropine MesylateBenztropine Mesylate67suppressed
Paroxetine HclParoxetine Hcl63suppressed
Divalproex Sodium ErDivalproex Sodium57suppressed
Zolpidem TartrateZolpidem Tartrate57suppressed
MirtazapineMirtazapine50suppressed
OxcarbazepineOxcarbazepine50suppressed
VraylarCariprazine Hcl4811
Lithium CarbonateLithium Carbonate41suppressed
RisperidoneRisperidone29suppressed
Prazosin HclPrazosin Hcl28suppressed
HaloperidolHaloperidol27suppressed
Citalopram HbrCitalopram Hydrobromide25suppressed
Ziprasidone HclZiprasidone Hcl23suppressed
Amitriptyline HclAmitriptyline Hcl22suppressed
CaplytaLumateperone Tosylate18suppressed
TopiramateTopiramate18suppressed
Invega SustennaPaliperidone Palmitate17suppressed
RexultiBrexpiprazole14suppressed
BelsomraSuvorexant13suppressed
Bupropion Hcl SrBupropion Hcl12suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate12suppressed
Lithium Carbonate ErLithium Carbonate12suppressed
Naltrexone HclNaltrexone Hcl11suppressed
RamelteonRamelteon11suppressed

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 $373.02 · 14 records Neurocrine BioSciences, Inc. AUSTEDO XR, COBENFY, INGREZZA, REXULTI, UZEDY, VIVITROL, VRAYLAR 2
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