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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (10)

The overall average patient rating of Dr. John Mckenzie is Good. Dr. Mckenzie has been reviewed by 19 patients who have provided 10 comments. The rating is 3 out of 4 stars.

Patient Ratings
Ease of Appointment 2.9
Promptness 2.4
Courteous Staff 2.8
Accurate Diagnosis 2.9
Bedside Manner 2.6
Spends Time with Me 2.5
Follows Up After Visit 2.8

Specialties & Research

  • He has special expertise in 5 areas:
  • Acute Coronary Syndrome (ACS)
  • Cardiac Arrhythmias
  • Heart Block
  • High Blood Pressure (Hypertension)
  • Unstable Angina

Education & Awards

Dr. Mckenzie graduated from University of Missouri at Kansas City.


Dr. Mckenzie has 31 hospital affiliations:

  • Downey Regional Medical Center 
  • Verdugo Hills Hospital 


  • Korean
  • Armenian
  • Spanish
  • Persian
  • English

> > > > Dr. John Mckenzie, MD

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Additional Information
Dr. John P Mckenzie MD is a male Internist, has 23 years of experience and practices in Cardiovascular Disease, Cardiology, and Interventional Cardiology.
Where does Dr. John P. Mckenzie practice?
Dr. John Mckenzie has 4 office locations.
Dr. John Mckenzie practices Cardiovascular Disease, Cardiology, and Interventional Cardiology near Glendale, CA.
Additional practice locations include: Los Angeles, CA.
See Glendale Cardiologists.