Healthcare provider profile · identity verified

Mark A Oshaughnessy, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · FORT WAYNE, IN · NPI 1962494138

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 Mark A Oshaughnessy, MD received $45.20 in general payments during 2025 across 2 reported records.

KYOWA KIRIN, INC. accounted for 53.9% 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: Eliquis.

E.R. Squibb & Sons, L.L.C. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 680 claims for Eliquis by this doctor in 2024.

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

Payment overview · 2025

General Payments

$45.20

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
KYOWA KIRIN, INC. Unresolved — no canonical attribution shown $24.3553.9%12025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $20.8546.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$45.202

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
CRYSVITA
Normalized: crysvita
Drug KYOWA KIRIN, INC. $24.35 1 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug E.R. Squibb & Sons, L.L.C. $20.85 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
ELIQUIS
eliquis
2025 Eliquis 2024 680 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
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
27956 supporting records · 14870 recipient NPIs · example record 1184377713
Eliquis · 2024
Exact normalized brand match · 1 Part D row
680 195

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
Atorvastatin CalciumAtorvastatin Calcium776267
Metoprolol SuccinateMetoprolol Succinate758266
CarvedilolCarvedilol717231
Amlodipine BesylateAmlodipine Besylate698241
EliquisApixaban680195
SpironolactoneSpironolactone553186
TorsemideTorsemide407149
ClopidogrelClopidogrel Bisulfate354125
FurosemideFurosemide345127
Metoprolol TartrateMetoprolol Tartrate336119
Isosorbide Mononitrate ErIsosorbide Mononitrate330117
LisinoprilLisinopril315112
Losartan PotassiumLosartan Potassium25390
NitroglycerinNitroglycerin232158
Amiodarone HclAmiodarone Hcl21169
Rosuvastatin CalciumRosuvastatin Calcium20874
Diltiazem 24hr Er (Cd)Diltiazem Hcl20067
Pravastatin SodiumPravastatin Sodium17452
HydrochlorothiazideHydrochlorothiazide16157
EzetimibeEzetimibe15343
XareltoRivaroxaban15343
EntrestoSacubitril/Valsartan15145
AtenololAtenolol13945
Potassium ChloridePotassium Chloride10841
SimvastatinSimvastatin9226
JardianceEmpagliflozin8323
ValsartanValsartan7623
ChlorthalidoneChlorthalidone6520
Repatha SureclickEvolocumab5811
DigoxinDigoxin5621
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5319
CilostazolCilostazol5217
Ranolazine ErRanolazine5221
Klor-Con M20Potassium Chloride5121
Pantoprazole SodiumPantoprazole Sodium5018
Orenitram ErTreprostinil Diolamine44suppressed
OmeprazoleOmeprazole4013
OpsumitMacitentan40suppressed
Praluent PenAlirocumab36suppressed
TadalafilTadalafil35suppressed
Clonidine HclClonidine Hcl3413
BosentanBosentan33suppressed
Hydralazine HclHydralazine Hcl3112
MetolazoneMetolazone31suppressed
RamiprilRamipril31suppressed
Sildenafil CitrateSildenafil Citrate30suppressed
BumetanideBumetanide2914
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide26suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril24suppressed
Midodrine HclMidodrine Hcl24suppressed
UptraviSelexipag24suppressed
Benazepril HclBenazepril Hcl22suppressed
AmbrisentanAmbrisentan21suppressed
Verapamil ErVerapamil Hcl21suppressed
IrbesartanIrbesartan19suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid18suppressed
Flecainide AcetateFlecainide Acetate17suppressed
Nifedipine ErNifedipine17suppressed
FarxigaDapagliflozin Propanediol16suppressed
Tamsulosin HclTamsulosin Hcl16suppressed
Enalapril MaleateEnalapril Maleate15suppressed
FenofibrateFenofibrate15suppressed
FenofibrateFenofibrate Nanocrystallized15suppressed
Olmesartan MedoxomilOlmesartan Medoxomil15suppressed
Warfarin SodiumWarfarin Sodium15suppressed
NadololNadolol14suppressed
Dabigatran EtexilateDabigatran Etexilate Mesylate13suppressed
MinoxidilMinoxidil13suppressed
VascepaIcosapent Ethyl13suppressed
Fludrocortisone AcetateFludrocortisone Acetate12suppressed
Levothyroxine SodiumLevothyroxine Sodium12suppressed
NexletolBempedoic Acid12suppressed
SotalolSotalol Hcl12suppressed
Terazosin HclTerazosin 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 $45.20 · 2 records KYOWA KIRIN, INC. CRYSVITA, ELIQUIS 1
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