Browse Health
Internist, Cardiologist (heart)
35 years of experience
Accepting new patients
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).

Learn more about Dr. Warren Johnston:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

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Patient Reviews

4.0
  • Currently 4 of 4 stars
(2)
Patient comments (0)

The overall average patient rating of Dr. Warren Johnston is Excellent. Dr. Johnston has been reviewed by 2 patients who have provided 0 comments. The rating is 4 out of 4 stars.

Patient Ratings
Accurate Diagnosis 3.0
  • Currently 3 of 4 stars
Bedside Manner 3.0
  • Currently 3 of 4 stars
Spends Time with Me 3.0
  • Currently 3 of 4 stars
Follows Up After Visit 4.0
  • Currently 4 of 4 stars

Specialties & Research

Dr. Warren Johnston, FACC, FACP, MD is board certified in Internal Medicine and Cardiovascular Disease.

  • He has special expertise in 5 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • Unstable Angina
  • Women's Health

Education & Awards

Dr. Johnston graduated from University of Rochester .


Affiliations

Dr. Johnston has 8 hospital affiliations:

  • St. Joseph Hospital - Orange 
  • Irvine Regional Hospital & Medical Center 

Languages

  • Spanish
  • Farsi
  • Persian
  • Armenian

> > > > Dr. Warren Johnston, FACC, FACP, MD

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Additional Information
Dr. Warren David Johnston FACC, FACP, and MD is a male Internist, has 35 years of experience and practices in Internal Medicine and Cardiovascular Disease.
Where does Dr. Warren D. Johnston practice?
Dr. Warren Johnston has 2 office locations.
Dr. Warren Johnston practices Internal Medicine and Cardiovascular Disease near Orange, CA.
Additional practice locations include: Santa Ana, CA.
See Orange Internists and Orange Cardiologists.