Healthcare provider profile · identity verified

Michael J Larkin, D.O.

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · ALTOONA, PA · NPI 1639147788

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 Michael J Larkin, D.O. received $862.55 in general payments during 2025 across 25 reported records.

Abbott Laboratories accounted for 49.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 13 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 1078 claims for Eliquis by this doctor in 2024.

PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 1078 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

$862.55

25 reported records · 10 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
Abbott Laboratories Unresolved — no canonical attribution shown $427.2849.5%82025
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) Unresolved — no canonical attribution shown $126.8114.7%32025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $84.439.8%42025
ABIOMED Unresolved — no canonical attribution shown $53.496.2%12025
PFIZER INC. Unresolved — no canonical attribution shown $50.405.8%32025
Novo Nordisk Inc Unresolved — no canonical attribution shown $38.604.5%22025
Boston Scientific Corporation Unresolved — no canonical attribution shown $27.493.2%12025
Inspire Medical Systems, Inc. Unresolved — no canonical attribution shown $19.722.3%12025
Actelion Pharmaceuticals US, Inc. Unresolved — no canonical attribution shown $18.692.2%12025
Alnylam Pharmaceuticals Inc. Unresolved — no canonical attribution shown $15.641.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$862.5525

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
AVEIR
Normalized: aveir
Device Abbott Laboratories $147.03 3 2025
Source payment records
QUADRA ASSURA
Normalized: quadra assura
Device Abbott Laboratories $131.80 1 2025
Source payment records
LifeVest
Normalized: lifevest
Device ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $126.81 3 2025
Source payment records
MITRACLIP
Normalized: mitraclip
Device Abbott Laboratories $77.02 1 2025
Source payment records
JOT DX
Normalized: jot dx
Device Abbott Laboratories $71.43 3 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug E.R. Squibb & Sons, L.L.C. $44.47 2 2025
Source payment records
CAMZYOS
Normalized: camzyos
Drug E.R. Squibb & Sons, L.L.C. $39.96 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $38.60 2 2025
Source payment records
WATCHMAN FLX
Normalized: watchman flx
Device Boston Scientific Corporation $27.49 1 2025
Source payment records
INSPIRE
Normalized: inspire
Device Inspire Medical Systems, Inc. $19.72 1 2025
Source payment records
UPTRAVI
Normalized: uptravi
Drug Actelion Pharmaceuticals US, Inc. $18.69 1 2025
Source payment records
ONPATTRO
Normalized: onpattro
Drug Alnylam Pharmaceuticals Inc. $15.64 1 2025
Source payment records
VYNDAQEL
Normalized: vyndaqel
Drug PFIZER INC. $15.23 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 1078 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
1078 192
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
1078 192

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
Metoprolol SuccinateMetoprolol Succinate1110280
EliquisApixaban1078192
Atorvastatin CalciumAtorvastatin Calcium342103
LisinoprilLisinopril34281
FurosemideFurosemide33090
XareltoRivaroxaban29563
Amlodipine BesylateAmlodipine Besylate28877
ClopidogrelClopidogrel Bisulfate27177
Losartan PotassiumLosartan Potassium24873
CarvedilolCarvedilol24659
Metoprolol TartrateMetoprolol Tartrate23758
Diltiazem 24hr Er (Cd)Diltiazem Hcl22450
EntrestoSacubitril/Valsartan18738
Amiodarone HclAmiodarone Hcl18551
Potassium ChloridePotassium Chloride16937
SpironolactoneSpironolactone15240
Isosorbide Mononitrate ErIsosorbide Mononitrate14041
Bisoprolol FumarateBisoprolol Fumarate12125
Rosuvastatin CalciumRosuvastatin Calcium11339
Terazosin HclTerazosin Hcl10930
Warfarin SodiumWarfarin Sodium8222
HydrochlorothiazideHydrochlorothiazide8023
ValsartanValsartan7419
JardianceEmpagliflozin6616
DigoxinDigoxin6515
SimvastatinSimvastatin5917
Repatha SureclickEvolocumab5611
AtenololAtenolol5416
Diltiazem 24hr ErDiltiazem Hcl4814
Midodrine HclMidodrine Hcl44suppressed
BumetanideBumetanide4011
Labetalol HclLabetalol Hcl3914
Dilt-XrDiltiazem Hcl3611
NitroglycerinNitroglycerin3629
Diltiazem HclDiltiazem Hcl35suppressed
Hydralazine HclHydralazine Hcl35suppressed
Pantoprazole SodiumPantoprazole Sodium29suppressed
SotalolSotalol Hcl28suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide27suppressed
MultaqDronedarone Hcl27suppressed
MetolazoneMetolazone23suppressed
Propafenone HclPropafenone Hcl22suppressed
Flecainide AcetateFlecainide Acetate20suppressed
Ranolazine ErRanolazine20suppressed
ChlorthalidoneChlorthalidone19suppressed
Cartia XtDiltiazem Hcl17suppressed
Pravastatin SodiumPravastatin Sodium17suppressed
CephalexinCephalexin1616
TorsemideTorsemide16suppressed
Nebivolol HclNebivolol Hcl15suppressed
BrilintaTicagrelor14suppressed
Clonidine HclClonidine Hcl14suppressed
Dabigatran EtexilateDabigatran Etexilate Mesylate13suppressed
Klor-Con M20Potassium Chloride13suppressed
Nifedipine ErNifedipine13suppressed
FarxigaDapagliflozin Propanediol12suppressed
Propranolol Hcl ErPropranolol Hcl12suppressed
JantovenWarfarin Sodium11suppressed
Propranolol HclPropranolol 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 $862.55 · 25 records Abbott Laboratories AVEIR, CAMZYOS, ELIQUIS, INSPIRE, JOT DX, LifeVest, MITRACLIP, ONPATTRO, QUADRA ASSURA, UPTRAVI, VYNDAQEL, WATCHMAN FLX, Wegovy 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