Healthcare provider profile · identity verified

Nicholas John Mayer, D.O.

Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology · FLORISSANT, MO · NPI 1104075597

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 Nicholas John Mayer, D.O. received $559.45 in general payments during 2025 across 12 reported records.

Otsuka America Pharmaceutical, Inc. accounted for 31.6% 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: Jardiance, Veltassa.

Boehringer Ingelheim 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 129 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 129 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 35 claims for Mounjaro by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Trulicity by this doctor in 2024.

Vifor Pharma, 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 Veltassa as an associated drug or biological on 5970 records involving 2480 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Veltassa by this doctor in 2024.

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

Payment overview · 2025

General Payments

$559.45

12 reported records · 9 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
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $176.6131.6%32025
Travere Therapeutics, Inc. Unresolved — no canonical attribution shown $124.9822.3%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $121.8221.8%12025
OPKO Pharmaceuticals, LLC Unresolved — no canonical attribution shown $33.726.0%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $28.835.2%12025
Otsuka Pharmaceutical Development & Commercialization, Inc. Unresolved — no canonical attribution shown $21.073.8%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $20.673.7%12025
Vifor Pharma, Inc. Unresolved — no canonical attribution shown $16.122.9%12025
ABBVIE INC. Unresolved — no canonical attribution shown $15.632.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$559.4512

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
Filspari
Normalized: filspari
Drug Travere Therapeutics, Inc. $124.98 1 2025
Source payment records
VOYXACT
Normalized: voyxact
Drug Otsuka America Pharmaceutical, Inc. $123.33 1 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $121.82 1 2025
Source payment records
JYNARQUE
Normalized: jynarque
Drug Otsuka America Pharmaceutical, Inc. $53.28 2 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $49.50 2 2025
Source payment records
RAYALDEE
Normalized: rayaldee
Drug OPKO Pharmaceuticals, LLC $33.72 2 2025
Source payment records
Veltassa
Normalized: veltassa
Drug Vifor Pharma, Inc. $16.12 1 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $15.63 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $15.63 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
JARDIANCE
jardiance
2025 Jardiance 2024 129 exact normalized Medicare Part D
Veltassa
veltassa
2025 Veltassa 2024 17
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
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
129 29
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
129 29
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
35 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
24 suppressed by CMS
Vifor Pharma, Inc.
Exact reporting entity; no affiliate inference
2025 Veltassa
open payments reported associated product
CMS Open Payments — General Payments
5970 supporting records · 2480 recipient NPIs · example record 1172020739
Veltassa · 2024
Exact normalized brand match · 1 Part D row
17 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
Losartan PotassiumLosartan Potassium364118
ChlorthalidoneChlorthalidone30090
Atorvastatin CalciumAtorvastatin Calcium25391
SpironolactoneSpironolactone22773
CalcitriolCalcitriol18755
CarvedilolCarvedilol18561
Olmesartan MedoxomilOlmesartan Medoxomil18163
Nifedipine ErNifedipine17564
FarxigaDapagliflozin Propanediol16933
TorsemideTorsemide16658
Amlodipine BesylateAmlodipine Besylate15554
JardianceEmpagliflozin12929
IndapamideIndapamide12349
Vitamin D2Ergocalciferol (Vitamin D2)12144
Tamsulosin HclTamsulosin Hcl9533
OzempicSemaglutide8026
Sevelamer CarbonateSevelamer Carbonate7021
AllopurinolAllopurinol6921
Metformin HclMetformin Hcl6624
LisinoprilLisinopril6226
GabapentinGabapentin6122
BumetanideBumetanide5219
Midodrine HclMidodrine Hcl5117
Citalopram HbrCitalopram Hydrobromide4817
Metoprolol SuccinateMetoprolol Succinate4716
FamotidineFamotidine4615
EliquisApixaban4414
Pantoprazole SodiumPantoprazole Sodium4319
MounjaroTirzepatide35suppressed
Hydralazine HclHydralazine Hcl3015
EzetimibeEzetimibe29suppressed
Cinacalcet HclCinacalcet Hcl26suppressed
Rosuvastatin CalciumRosuvastatin Calcium26suppressed
ClopidogrelClopidogrel Bisulfate2511
EntrestoSacubitril/Valsartan25suppressed
Levothyroxine SodiumLevothyroxine Sodium25suppressed
Pravastatin SodiumPravastatin Sodium25suppressed
TrulicityDulaglutide24suppressed
GlimepirideGlimepiride23suppressed
VelphoroSucroferric Oxyhydroxide2311
Amiloride HclAmiloride Hcl21suppressed
ClonidineClonidine2111
Metoprolol TartrateMetoprolol Tartrate21suppressed
RybelsusSemaglutide21suppressed
Ondansetron HclOndansetron Hcl20suppressed
Bupropion XlBupropion Hcl19suppressed
FinasterideFinasteride18suppressed
HydrochlorothiazideHydrochlorothiazide17suppressed
VeltassaPatiromer Calcium Sorbitex17suppressed
FurosemideFurosemide16suppressed
Tresiba Flextouch U-100Insulin Degludec16suppressed
GlipizideGlipizide15suppressed
Meclizine HclMeclizine Hcl15suppressed
Venlafaxine Hcl ErVenlafaxine Hcl15suppressed
ColchicineColchicine14suppressed
Fluticasone PropionateFluticasone Propionate14suppressed
Potassium ChloridePotassium Chloride14suppressed
Alendronate SodiumAlendronate Sodium13suppressed
Ciprofloxacin HclCiprofloxacin Hcl1311
Lantus SolostarInsulin Glargine,hum.Rec.Anlog13suppressed
OmeprazoleOmeprazole13suppressed
Potassium Citrate ErPotassium Citrate13suppressed
PrednisonePrednisone13suppressed
Albuterol Sulfate HfaAlbuterol Sulfate12suppressed
LokelmaSodium Zirconium Cyclosilicate12suppressed
Metformin Hcl ErMetformin Hcl12suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog12suppressed
AtenololAtenolol11suppressed
Breo ElliptaFluticasone/Vilanterol11suppressed
EplerenoneEplerenone11suppressed
MirtazapineMirtazapine11suppressed

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 $559.45 · 12 records Otsuka America Pharmaceutical, Inc. AREXVY, Filspari, JARDIANCE, JYNARQUE, QULIPTA, RAYALDEE, UBRELVY, VOYXACT, Veltassa 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