Healthcare provider profile · identity verified

John Richard Mendius, M.D.

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · SANTA ROSA, CA · NPI 1295765881

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 Richard Mendius, M.D. received $15.00 in general payments during 2025 across 1 reported records.

UCB, Inc. accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

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

Payment overview · 2025

General Payments

$15.00

1 reported records · 1 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
UCB, Inc. Unresolved — no canonical attribution shown $15.00100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Education$15.001

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
Rystiggo
Normalized: rystiggo
Drug UCB, Inc. $15.00 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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
Donepezil HclDonepezil Hcl448137
LevetiracetamLevetiracetam26863
GabapentinGabapentin23772
Carbidopa-LevodopaCarbidopa/Levodopa17644
Ropinirole HclRopinirole Hcl14735
MeloxicamMeloxicam12928
LamotrigineLamotrigine12326
PregabalinPregabalin9026
TopiramateTopiramate8822
Sertraline HclSertraline Hcl8015
Sumatriptan SuccinateSumatriptan Succinate7617
Tizanidine HclTizanidine Hcl7524
Memantine HclMemantine Hcl7415
Trazodone HclTrazodone Hcl7418
Tramadol HclTramadol Hcl72suppressed
PrimidonePrimidone6917
Quetiapine FumarateQuetiapine Fumarate6915
RizatriptanRizatriptan Benzoate6916
Phenytoin Sodium ExtendedPhenytoin Sodium Extended6713
Duloxetine HclDuloxetine Hcl6217
Propranolol HclPropranolol Hcl6218
Aimovig AutoinjectorErenumab-Aooe5911
Atorvastatin CalciumAtorvastatin Calcium5320
CarbamazepineCarbamazepine52suppressed
ClonazepamClonazepam52suppressed
LorazepamLorazepam51suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl5013
BaclofenBaclofen4817
Carbidopa-Levodopa ErCarbidopa/Levodopa4412
ClopidogrelClopidogrel Bisulfate4213
Emgality PenGalcanezumab-Gnlm42suppressed
LacosamideLacosamide42suppressed
Divalproex SodiumDivalproex Sodium35suppressed
RisperidoneRisperidone35suppressed
ZolmitriptanZolmitriptan34suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3212
ZonisamideZonisamide30suppressed
Nurtec OdtRimegepant Sulfate29suppressed
Divalproex Sodium ErDivalproex Sodium27suppressed
Bupropion XlBupropion Hcl26suppressed
Ondansetron OdtOndansetron25suppressed
ModafinilModafinil24suppressed
Amitriptyline HclAmitriptyline Hcl23suppressed
Buspirone HclBuspirone Hcl23suppressed
Levothyroxine SodiumLevothyroxine Sodium22suppressed
RivastigmineRivastigmine21suppressed
UbrelvyUbrogepant21suppressed
SimvastatinSimvastatin20suppressed
AlprazolamAlprazolam19suppressed
AripiprazoleAripiprazole19suppressed
CarisoprodolCarisoprodol19suppressed
DilantinPhenytoin Sodium Extended19suppressed
OlanzapineOlanzapine19suppressed
AmantadineAmantadine Hcl18suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine18suppressed
Eletriptan HbrEletriptan Hydrobromide18suppressed
EntacaponeEntacapone18suppressed
Methylphenidate HclMethylphenidate Hcl18suppressed
TeriflunomideTeriflunomide18suppressed
Nortriptyline HclNortriptyline Hcl17suppressed
OxcarbazepineOxcarbazepine17suppressed
PhenobarbitalPhenobarbital17suppressed
Pyridostigmine BromidePyridostigmine Bromide17suppressed
Levetiracetam ErLevetiracetam16suppressed
Zolpidem TartrateZolpidem Tartrate16suppressed
Propranolol Hcl ErPropranolol Hcl15suppressed
LisinoprilLisinopril14suppressed
Meclizine HclMeclizine Hcl14suppressed
Chlorhexidine GluconateChlorhexidine Gluconate13suppressed
ClobazamClobazam13suppressed
Niacin ErNiacin13suppressed
Ondansetron HclOndansetron Hcl13suppressed
Carbamazepine ErCarbamazepine12suppressed
MyrbetriqMirabegron12suppressed
Venlafaxine Hcl ErVenlafaxine Hcl12suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine11suppressed
Escitalopram OxalateEscitalopram Oxalate11suppressed
IngrezzaValbenazine Tosylate11suppressed

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 $15.00 · 1 records UCB, Inc. Rystiggo
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