Medicare Enrolled
Dr. John McKenzie, M.D.
Cardiovascular Disease · Glendale, CA
Practice pattern: Electrophysiology & Remote
— Practice combining electrophysiology and remote services
Consulting-driven
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. McKenzie from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. McKenzie
Dr. John McKenzie is a cardiovascular disease specialist in Glendale, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. McKenzie performed 8,107 Medicare services across 4,067 unique beneficiaries.
Between the years covered by Open Payments, Dr. McKenzie received a total of $137,007 from 43 pharmaceutical and/or device companies across 1101 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in cardiovascular disease. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. McKenzie is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ Top 9% volume in CA
$137,007 industry payments
Medicare Practice Summary
Medicare Utilization ↗8,107
Medicare services
Top 9% in CA for cardiovascular disease
4,067
Unique beneficiaries
$57
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~405 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Remote monitoring of implantable heart device, up to 30 days Remote evaluation of an implanted heart or blood vessel monitoring system over a period of up to 30 days. |
1,638 | $21 | $100 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
1,110 | $12 | $50 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
704 | $76 | $106 |
| Remote pacemaker monitoring, 90 days Remote assessment of a pacemaker system, including single, dual, multiple lead, or leadless devices, performed up to 90 days apart. |
699 | $24 | $100 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
528 | $29 | $200 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
450 | $107 | $168 |
| Remote evaluation of implantable defibrillator system Remote assessment of a single, dual, or multiple lead implantable defibrillator system within 90 days of the previous evaluation. |
430 | $30 | $150 |
| Evaluation of implantable heart and blood vessel monitoring system This procedure involves checking the function and data of an implanted device used to monitor heart and blood vessel activity. |
350 | $17 | $75 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
331 | $100 | $150 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
233 | $108 | $200 |
| Programming of multiple lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with multiple leads to ensure proper function. |
211 | $51 | $350 |
| Remote cardiac rhythm monitor evaluation, up to 30 days Review and analysis of data from a remote cardiac rhythm monitoring system over a period of up to 30 days. |
196 | $21 | $36 |
| Programming of dual lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with two leads to ensure proper function. |
186 | $45 | $250 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
114 | $137 | $236 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
107 | $10 | $50 |
| Continuous external EKG monitoring, 48 hours to 7 days This procedure involves recording the heart's electrical activity continuously using an external device for a period exceeding 48 hours but not more than 7 days. |
78 | $11 | $53 |
| Heart rhythm stimulator programming after drug infusion Adjustment of a heart rhythm stimulation device following a drug infusion. This procedure involves reprogramming the device settings to ensure proper function after the medication has been administered. |
62 | $71 | $500 |
| Pacemaker system evaluation Assessment of a pacemaker device, including single, dual, multiple lead, or leadless systems. |
60 | $16 | $76 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
54 | $167 | $360 |
| Repair of left upper heart chamber with implant A surgical procedure to repair the left upper chamber of the heart using an implanted device, with review by a radiologist. |
49 | $632 | $1,200 |
| Atrial fibrillation ablation with pulmonary vein isolation A procedure to treat atrial fibrillation by mapping the heart's electrical activity and destroying tissue causing irregular contractions. This is done by isolating the pulmonary veins using catheter-based destruction. |
43 | $772 | $3,000 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
41 | $19 | $63 |
| Heart chamber tissue destruction via catheter A procedure that destroys tissue in the upper heart chamber using a tube to treat abnormal heart rhythm. |
41 | $250 | $1,200 |
| Catheter ablation for abnormal heart rhythm A procedure where catheters are inserted to destroy tissue causing irregular heartbeats. |
40 | $250 | $1,200 |
| Pacemaker system programming Adjustment and testing of a multi-lead pacemaker to ensure proper function and settings. |
38 | $32 | $300 |
| External shock to heart to regulate heart beat A procedure that delivers an electric shock to the heart from outside the body to restore a normal heart rhythm. |
30 | $91 | $289 |
| Pacemaker programming, single lead Adjustment and testing of a single-lead pacemaker to ensure it functions correctly. |
30 | $24 | $200 |
| Relocation of pacemaker skin pocket This procedure involves moving the pacemaker generator to a new location under the skin. It is performed to adjust the position of the device within the body. |
25 | $150 | $504 |
| Relocation of defibrillator skin pocket This procedure involves moving the skin pocket that houses a defibrillator device to a new location on the body. |
25 | $337 | $1,200 |
| Removal and replacement of dual lead permanent pacemaker This procedure involves removing an existing permanent pacemaker with two leads and replacing it with a new device. It is performed to update or repair the heart rhythm management system. |
25 | $291 | $1,200 |
| Removal and replacement of dual lead defibrillator | 25 | $161 | $1,436 |
| Continuous external EKG monitoring, 8-15 days This procedure involves recording heart rhythm continuously using an external EKG device over a period of 8 to 15 days. |
23 | $11 | $53 |
| Pacemaker system programming Adjustment and configuration of a pacemaker device to ensure proper operation. This service involves setting device parameters before or after surgical implantation. |
22 | $12 | $100 |
| Pacemaker insertion with heart chamber electrodes A surgical procedure to implant a pacemaker device and place electrodes into the upper and lower chambers of the heart to regulate heart rhythm. |
21 | $421 | $1,800 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
16 | $22 | $69 |
| Heart catheterization to identify abnormal heart rhythm A tube is inserted into the heart chambers to record electrical activity and locate the source of an irregular heartbeat. |
16 | $223 | $750 |
| Radiofrequency ablation for supraventricular tachycardia A procedure to locate and destroy abnormal heart tissue in the upper chambers of the heart that causes a rapid heart rate. |
16 | $681 | $2,400 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
15 | $59 | $315 |
| Permanent leadless pacemaker insertion A small, self-contained pacemaker is placed directly into the heart without using wires. The procedure is guided by imaging to ensure correct positioning. |
13 | $334 | $1,600 |
| Heart conduction tissue destruction A procedure that destroys heart conduction tissue to create a heart block. |
12 | $475 | $2,500 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
32.2% high complexity
0.0% medium
67.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$137,007
Total received (2018-2024)
Avg $19,572/year across 7 years
Top 5% in CA for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
43
Companies
1,101
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$80,948 (59.1%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$54,374 (39.7%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$1,686 (1.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$8,068
2023
$15,982
2022
$13,204
2021
$16,880
2020
$32,258
2019
$19,585
2018
$31,030
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Abbott Laboratories
$3,253
Medical Device Business Services, Inc.
$2,319
Medtronic, Inc.
$1,435
Boston Scientific Corporation
$641
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$109
ATRICURE, INC.
$108
Inspire Medical Systems, Inc.
$85
CARDIVA MEDICAL, INC.
$44
Novo Nordisk Inc
$31
Philips North America LLC
$22
HEARTFLOW, INC.
$20
Top 3 companies account for 86.9% of 2024 payments
All-time payments by company (2018-2024) ›
Abbott Laboratories
$53,689
Acutus Medical, Inc.
$44,376
Medtronic, Inc.
$12,916
Boston Scientific Corporation
$6,027
Galvanize Therapeutics, Inc
$3,109
Medtronic Vascular, Inc.
$2,836
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$2,563
Medical Device Business Services, Inc.
$2,454
BOSTON SCIENTIFIC CORPORATION
$1,132
CVRx, Inc.
$1,028
CARDIVA MEDICAL, INC.
$642
BIOTRONIK INC.
$641
Impulse Dynamics (USA) Inc.
$572
Biosense Webster, Inc.
$554
ATRICURE, INC.
$538
Novartis Pharmaceuticals Corporation
$485
ABIOMED
$345
Actelion Pharmaceuticals US, Inc.
$315
Inspire Medical Systems, Inc.
$312
Janssen Pharmaceuticals, Inc
$305
Edwards Lifesciences Corporation
$300
iRhythm Technologies, Inc.
$261
Stereotaxis Inc
$208
AstraZeneca Pharmaceuticals LP
$193
Amgen Inc.
$183
AtriCure, Inc.
$159
E.R. Squibb & Sons, L.L.C.
$120
Boehringer Ingelheim Pharmaceuticals, Inc.
$113
Itamar Medical Inc
$109
Esperion Therapeutics, Inc.
$81
SANOFI-AVENTIS U.S. LLC
$81
Novo Nordisk Inc
$54
Astellas Pharma US Inc
$50
Bayer HealthCare Pharmaceuticals Inc.
$44
Amarin Pharma Inc.
$37
Kestra Medical Technology Services, Inc.
$31
Invuity, Inc.
$29
Cardiovascular Systems Inc.
$24
Philips North America LLC
$22
HEARTFLOW, INC.
$20
Regeneron Healthcare Solutions, Inc.
$19
CSL Behring
$16
ZOLL Circulation Inc
$15
Top 3 companies account for 81.0% of all-time payments
Associated products mentioned in payments ›
(5044) MCOT · ACCOLADE · ACCOLADE SR · ALIYA SYSTEM · AMPLATZER · AMPLATZER AMULET · AMPLATZER TORQVUE 45 X 45 · ASSURITY · ATRICLIP LAA EXCLUSION SYSTEM · AVEIR · AZURE XT DR MRI SURESCAN · Absolute Pro vascular stent system · Accent Pacemaker · Adempas · Advisa · Advisor Catheter · Agilis NxT EP Introducer · Allure Quadra RF CRT Pacemaker · Arctic Front · Asahi Fielder coronary guide wire · Assure WCD · Assurity Pacemaker · Azure · BIOMONITOR · BRILINTA · Barostim Neo System · CAMZYOS · CARDIOMEMS · CARDIVA VASCADE 5F VCS · CARDIVA VASCADE 6/7F VCS · CARDIVA VASCADE MVP VVCS 6-12F · CARTO 3 · CENTAURI · CLINICAL TRIAL PRODUCT · COBALT DR MRI SURESCAN · CONFIRM RX · COROFLOW · CardioMEMS HF System · Carto 3 · Carto 3 System · Claria MRI · Cobalt · Confirm Rx · DIAMONDTEMP BIDIRECTIONAL ABLATION CATHETER · Dragonfly OCT · Durata Defibrillation ICD Lead · EMBLEM · EMBLEM MRI S-ICD · EMBLEM S ICD ELECTRODE DELIVERY SYSTEM · EMBLEM SICD ELECTRODE DELIVERY SYSTEM · ENSITE · ENSITE PRECISION · ENTRESTO · EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX · Edwards SAPIEN 3 Transcatheter Heart Valve · Ellipse ICD · EnSite Precision Cardiac Mapping System · Ensite Cardiac Mapping System · FARXIGA · FFRct · FORTIFY ASSURA · Fortify Assura · GALLANT · GENERAL THERAPIES · GENERAL - TACHY · GENERAL THERAPIES · General - Brady · General - Tachy · HeartMate · HeartMate 3 Left Ventricular Dev · ICDs · INGEVITY · INGEVITY MRI · INSPIRE · Impella · Inspire Upper Airway Stimulation System · JARDIANCE · JOT DX · Kcentra · LATITUDE · LATITUDE Communicator Power Supply · LEQVIO · LEXISCAN · LINQ II · LUX DX · LUX-DX · LUX-Dx Insertable Cardiac Monitor · LUXDX · Lasso · LifeVest · MERLIN@HOME · MICRA · MITRACLIP · MODELS · MRI Ready Leads · MULTAQ · MYCARELINK · Merlin Connectivity and Remote · Micra · Mitra Clip system · MitraClip System · NA · NEXLIZET · NUVISION ICE CATHETER · Nanostim Leadleas Pacemaker · Niobe · OPSUMIT · OPTIMIZER · OptiSense Pacing Lead · Optimizer · Optimizer Smart System · Optisure Defibrillation ICD Lead · Ozempic · PERCLOSE PROGLIDE · PRALUENT ALIROCUMAB INJECTION · Pacemakers · Peel-Away Standard Introducer · Perclose ProGlide suture mediated closure system · Perclose ProStyle · Peripheral Orbital Atherectomy System · Photonblade · Protecta · Protego · QUADRA ALLURE MP · QUADRA ASSURA · Quadra Allure MP RF CRT Pacemkr · Quadra Assura CRT Defibrillator · Quartet CRT Lead · QuickFlex Micro 2 CRT Lead · RESONATE · RESONATE EL ICD VR · RHYTHMIA · Repatha · Reveal LINQ · Rhythmia Mapping System · Rivacor 7 DR-T · Rybelsus · S ICD · S-ICD System Magnet · SELECTSECURE · SENSOR ENABLED · SQ RX · SQ RX PULSE GENERATOR · SQ-RX PULSE GENERATOR · SQRX PULSE GENERATOR · SYNERGY ABLATION SYSTEM · Sentinel · Supera peripheral stent system · TACTICATH ABLATION CATHETER · Tendril Pacing Lead · TherOx DS2 Console · UPTRAVI · Unify Assura CRT Defibrillator · VIGILANT · Vascepa · Verquvo · ViewFlex Xtra ICE Catheter · Visia AF · WATCHMAN · WATCHMAN Access System · WATCHMAN FLX · WatchPAT · WatchPATONE · XARELTO · XIENCE SKYPOINT · Xience V coronary stent system · ZIO XT Patch · Zephyr Pacemaker
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
The majority of payments (59%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 5% for cardiovascular disease in CA.
Geographic Context
Cardiologists within 10 mi
592
Per 100K population
6.0
County median income
$87,760
Nearest hospital
GLENDALE MEM HOSPITAL & HLTH CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. McKenzie is an electrophysiology & remote specialist, with above-average Medicare volume (top 9% in CA), with consulting-driven industry engagement in the top 5% of CA peers, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. McKenzie experienced with remote monitoring of implantable heart device, up to 30 days?
Based on Medicare claims data, Dr. McKenzie performed 1,638 remote monitoring of implantable heart device, up to 30 days services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. McKenzie receive payments from pharmaceutical companies?
Yes. Dr. McKenzie received a total of $137,007 from 43 companies across 1,101 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. McKenzie's costs compare to other cardiologists in Glendale?
Dr. McKenzie's average Medicare payment per service is $57. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. McKenzie) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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