Healthcare provider profile · identity verified

John Warren Holshouser, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · CHARLOTTE, NC · NPI 1568474351

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 Warren Holshouser, MD received $676.44 in general payments during 2025 across 17 reported records.

Medtronic, Inc. accounted for 36.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 8 associated products.

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

Payment overview · 2025

General Payments

$676.44

17 reported records · 5 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
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$243.2636.0%72025
Boston Scientific Corporation Unresolved — no canonical attribution shown $208.3930.8%32025
AtriCure, Inc. Unresolved — no canonical attribution shown $103.5515.3%42025
BIOTRONIK INC. Unresolved — no canonical attribution shown $83.4112.3%22025
Impulse Dynamics (USA) Inc. Unresolved — no canonical attribution shown $37.835.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$676.4417

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
AFFERA MAPPING SYSTEM
Normalized: affera mapping system
Device Medtronic, Inc. $226.31 6 2025
Source payment records
WATCHMAN FLX
Normalized: watchman flx
Device Boston Scientific Corporation $187.92 2 2025
Source payment records
EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX
Normalized: epi sense guided coagulation system with visitrax
Device AtriCure, Inc. $103.55 4 2025
Source payment records
Acticor 7 VR-T DX
Normalized: acticor 7 vr t dx
Device BIOTRONIK INC. $83.41 2 2025
Source payment records
AMVIA EDGE
Normalized: amvia edge
Device BIOTRONIK INC. $63.42 1 2025
Source payment records
Optimizer
Normalized: optimizer
Device Impulse Dynamics (USA) Inc. $37.83 1 2025
Source payment records
General - Therapies
Normalized: general therapies
Device Boston Scientific Corporation $20.47 1 2025
Source payment records
MICRA
Normalized: micra
Device Medtronic, Inc. $16.95 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
EliquisApixaban595164
Metoprolol SuccinateMetoprolol Succinate339132
Diltiazem 24hr Er (Cd)Diltiazem Hcl24786
Amiodarone HclAmiodarone Hcl12255
Atorvastatin CalciumAtorvastatin Calcium10131
XareltoRivaroxaban7922
Losartan PotassiumLosartan Potassium7526
Amlodipine BesylateAmlodipine Besylate7027
Flecainide AcetateFlecainide Acetate6728
FurosemideFurosemide6731
Metoprolol TartrateMetoprolol Tartrate6731
Rosuvastatin CalciumRosuvastatin Calcium5425
SpironolactoneSpironolactone5323
HydrochlorothiazideHydrochlorothiazide5218
Diltiazem HclDiltiazem Hcl4638
Potassium ChloridePotassium Chloride4520
CarvedilolCarvedilol4418
Propranolol HclPropranolol Hcl4019
Warfarin SodiumWarfarin Sodium3813
Mexiletine HclMexiletine Hcl37suppressed
EntrestoSacubitril/Valsartan32suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide3013
Tiadylt ErDiltiazem Hcl3012
DigoxinDigoxin2911
LisinoprilLisinopril24suppressed
NadololNadolol24suppressed
SotalolSotalol Hcl24suppressed
JantovenWarfarin Sodium22suppressed
DofetilideDofetilide20suppressed
SucralfateSucralfate1717
Cartia XtDiltiazem Hcl13suppressed
Dilt-XrDiltiazem Hcl13suppressed
Fludrocortisone AcetateFludrocortisone Acetate12suppressed
Klor-Con M20Potassium Chloride12suppressed
EzetimibeEzetimibe11suppressed
OmeprazoleOmeprazole1111
PindololPindolol11suppressed

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 $676.44 · 17 records Medtronic, Inc. AFFERA MAPPING SYSTEM, AMVIA EDGE, Acticor 7 VR-T DX, EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX, General - Therapies, MICRA, Optimizer, WATCHMAN FLX
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