Healthcare provider profile · identity verified

John Gregory Kupfner, M.D.

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Psychiatry · SEVIERVILLE, TN · NPI 1285832964

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 Gregory Kupfner, M.D. received $27.89 in general payments during 2025 across 2 reported records.

E.R. Squibb & Sons, L.L.C. accounted for 51.2% of that reported general-payment amount.

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

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

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 17 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 55 claims for Invega Sustenna by this doctor in 2024.

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

Payment overview · 2025

General Payments

$27.89

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
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $14.2851.2%12025
Janssen Pharmaceuticals, Inc Unresolved — no canonical attribution shown $13.6148.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$27.892

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. $14.28 1 2025
Source payment records
INVEGA SUSTENNA
Normalized: invega sustenna
Drug Janssen Pharmaceuticals, Inc $13.61 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 55
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 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
17 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
55 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
Trazodone HclTrazodone Hcl332106
Quetiapine FumarateQuetiapine Fumarate32286
Buspirone HclBuspirone Hcl283100
AripiprazoleAripiprazole25375
Fluoxetine HclFluoxetine Hcl23056
Sertraline HclSertraline Hcl20666
LamotrigineLamotrigine18860
ClonazepamClonazepam18041
Duloxetine HclDuloxetine Hcl16454
OlanzapineOlanzapine16342
Hydroxyzine HclHydroxyzine Hcl16052
RisperidoneRisperidone15936
MirtazapineMirtazapine15855
Benztropine MesylateBenztropine Mesylate13640
Bupropion XlBupropion Hcl13049
Escitalopram OxalateEscitalopram Oxalate12745
GabapentinGabapentin12632
DiazepamDiazepam11118
Venlafaxine Hcl ErVenlafaxine Hcl10937
Citalopram HbrCitalopram Hydrobromide9130
OxcarbazepineOxcarbazepine9127
Divalproex SodiumDivalproex Sodium9018
Hydroxyzine PamoateHydroxyzine Pamoate8640
Lurasidone HclLurasidone Hcl8319
Divalproex Sodium ErDivalproex Sodium7917
Prazosin HclPrazosin Hcl7828
LorazepamLorazepam7415
Clonidine HclClonidine Hcl5911
Fluvoxamine MaleateFluvoxamine Maleate5811
Invega SustennaPaliperidone Palmitate55suppressed
Ziprasidone HclZiprasidone Hcl4613
Atomoxetine HclAtomoxetine Hcl44suppressed
TopiramateTopiramate4115
VraylarCariprazine Hcl33suppressed
Imipramine HclImipramine Hcl30suppressed
TrintellixVortioxetine Hydrobromide2811
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine27suppressed
Thioridazine HclThioridazine Hcl27suppressed
Lithium CarbonateLithium Carbonate26suppressed
Zolpidem TartrateZolpidem Tartrate26suppressed
Chlorpromazine HclChlorpromazine Hcl25suppressed
Paroxetine HclParoxetine Hcl2514
VyvanseLisdexamfetamine Dimesylate25suppressed
Lithium Carbonate ErLithium Carbonate23suppressed
Abilify MaintenaAripiprazole22suppressed
Paliperidone ErPaliperidone22suppressed
Amitriptyline HclAmitriptyline Hcl21suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate2115
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine21suppressed
Vilazodone HclVilazodone Hcl20suppressed
Methylphenidate HclMethylphenidate Hcl19suppressed
Fluphenazine HclFluphenazine Hcl18suppressed
CaplytaLumateperone Tosylate17suppressed
Doxepin HclDoxepin Hcl17suppressed
HaloperidolHaloperidol17suppressed
Propranolol HclPropranolol Hcl1712
AlprazolamAlprazolam16suppressed
Memantine HclMemantine Hcl16suppressed
Naltrexone HclNaltrexone Hcl16suppressed
Bupropion Hcl SrBupropion Hcl15suppressed
EszopicloneEszopiclone15suppressed
ClozapineClozapine14suppressed
AristadaAripiprazole Lauroxil13suppressed
Dexmethylphenidate Hcl ErDexmethylphenidate Hcl13suppressed
Risperidone ErRisperidone Microspheres13suppressed
Clomipramine HclClomipramine Hcl12suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl12suppressed
Trihexyphenidyl HclTrihexyphenidyl Hcl12suppressed
Pantoprazole SodiumPantoprazole Sodium11suppressed

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 $27.89 · 2 records E.R. Squibb & Sons, L.L.C. COBENFY, INVEGA SUSTENNA 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