Healthcare provider profile · identity verified

Larry D. Mckenzie, DO

Allopathic & Osteopathic Physicians|Pain Medicine|Interventional Pain Medicine · BROKEN ARROW, OK · NPI 1003875212

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 Larry D. Mckenzie, DO received $256.91 in general payments during 2025 across 10 reported records.

Medtronic, Inc. accounted for 34.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 5 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Belbuca, Relistor.

Collegium Pharmaceutical, 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 BELBUCA as an associated drug or biological on 17475 records involving 4385 distinct recipient NPIs. Public Medicare Part D data also shows 148 claims for Belbuca by this doctor in 2024.

Salix Pharmaceuticals, a division of Bausch Health US, 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 RELISTOR as an associated drug or biological on 23206 records involving 6246 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Relistor by this doctor in 2024.

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

Payment overview · 2025

General Payments

$256.91

10 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
$89.1234.7%12025
Averitas Pharma Inc. Unresolved — no canonical attribution shown $49.6319.3%32025
Collegium Pharmaceutical, Inc. Unresolved — no canonical attribution shown $47.3618.4%32025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $38.1214.8%22025
Saluda Medical Americas, Inc. Unresolved — no canonical attribution shown $32.6812.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$256.9110

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
INCEPTIV
Normalized: inceptiv
Device Medtronic, Inc. $89.12 1 2025
Source payment records
QUTENZA
Normalized: qutenza
Drug Averitas Pharma Inc. $49.63 3 2025
Source payment records
Belbuca
Normalized: belbuca
Drug Collegium Pharmaceutical, Inc. $47.36 3 2025
Source payment records
RELISTOR
Normalized: relistor
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $38.12 2 2025
Source payment records
  • 2025-01-30 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $18.49 · Open Payments source
  • 2025-03-06 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $19.63 · Open Payments source
Evoke
Normalized: evoke
Device Saluda Medical Americas, Inc. $32.68 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
Belbuca
belbuca
2025 Belbuca 2024 148 exact normalized Medicare Part D
RELISTOR
relistor
2025 Relistor 2024 12
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
Collegium Pharmaceutical, Inc.
Exact reporting entity; no affiliate inference
2025 BELBUCA
open payments reported associated product
CMS Open Payments — General Payments
17475 supporting records · 4385 recipient NPIs · example record 1224105020
Belbuca · 2024
Exact normalized brand match · 1 Part D row
148 27
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Exact reporting entity; no affiliate inference
2025 RELISTOR
open payments reported associated product
CMS Open Payments — General Payments
23206 supporting records · 6246 recipient NPIs · example record 1231775437
Relistor · 2024
Exact normalized brand match · 1 Part D row
12 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
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen2979419
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen1673227
GabapentinGabapentin840131
PregabalinPregabalin635106
Tizanidine HclTizanidine Hcl52888
Cyclobenzaprine HclCyclobenzaprine Hcl50685
Morphine Sulfate ErMorphine Sulfate43859
Tramadol HclTramadol Hcl36873
BaclofenBaclofen26336
BuprenorphineBuprenorphine26256
MeloxicamMeloxicam23854
MethocarbamolMethocarbamol18432
Oxycodone HclOxycodone Hcl18132
Naloxone HclNaloxone Hcl172168
BelbucaBuprenorphine Hcl14827
Buprenorphine HclBuprenorphine Hcl13832
Tramadol Hcl ErTramadol Hcl12820
CelecoxibCelecoxib12024
Morphine SulfateMorphine Sulfate10219
Diclofenac SodiumDiclofenac Sodium8619
Duloxetine HclDuloxetine Hcl7612
IbuprofenIbuprofen7611
OmeprazoleOmeprazole7318
Hydromorphone HclHydromorphone Hcl69suppressed
Xtampza ErOxycodone Myristate6813
Acetaminophen-CodeineAcetaminophen With Codeine65suppressed
Trazodone HclTrazodone Hcl51suppressed
LidocaineLidocaine5012
Promethazine HclPromethazine Hcl41suppressed
BelsomraSuvorexant39suppressed
LevetiracetamLevetiracetam3512
MethylprednisoloneMethylprednisolone3322
MovantikNaloxegol Oxalate33suppressed
Amitriptyline HclAmitriptyline Hcl32suppressed
ZtlidoLidocaine31suppressed
FentanylFentanyl30suppressed
Methadone HclMethadone Hcl28suppressed
OxycontinOxycodone Hcl24suppressed
Lamotrigine ErLamotrigine22suppressed
Sumatriptan SuccinateSumatriptan Succinate22suppressed
Ondansetron HclOndansetron Hcl21suppressed
Ondansetron OdtOndansetron21suppressed
DayvigoLemborexant19suppressed
Ropinirole HclRopinirole Hcl18suppressed
TopiramateTopiramate18suppressed
Doxepin HclDoxepin Hcl17suppressed
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl14suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium13suppressed
NaproxenNaproxen13suppressed
Nortriptyline HclNortriptyline Hcl13suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl13suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine12suppressed
Doxazosin MesylateDoxazosin Mesylate12suppressed
RelistorMethylnaltrexone Bromide12suppressed
ButransBuprenorphine11suppressed
DiazepamDiazepam11suppressed

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 $256.91 · 10 records Medtronic, Inc. Belbuca, Evoke, INCEPTIV, QUTENZA, RELISTOR 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