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Dr. Warren Johnston, MD

Dr. Warren Johnston, MD

Cardiology*

Dr. Warren Johnston, MD is a cardiologist in Orange, CA. Dr. Johnston has extensive experience in Adult Congenital Heart Conditions and Heart Conditions. He is affiliated with Providence St. Joseph Hospital Orange. He is accepting new patients and telehealth appointments.

3.4 Star Rating
Based on 13 reviews 3.4 Star Rating (13 reviews)

St. Joseph Heritage Orange - Cardiology

1140 W La Veta Ave Ste 430 Orange, CA 92868
Telehealth available

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Dr. Johnston's Reviews

Likelihood to recommend Dr. Johnston

3.4
13 ratings, 5 with a written review
5 star
54%
54%
4 star
8%
8%
3 star
0%
0%
2 star
0%
0%
1 star
38%
38%

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Great cardiologist!
Dr. Johnston listens to the patient first then discusses and explains. I have gone to him for 23 years… Nothing but positive experiences.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Nov 08, 2022
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This doctor does not care about elderly patients. My Dad was a patient for 20 years. He had a reaction to the vaccine and died of heart failure. Before getting the vaccine he called Dr. Johnston multiple times because he was having an AFIB episode and wanted to make sure it was ok for him to still go ahead. Johnston couldn't even be bothered to call him back. The vaccine elevated his heart rate for 3 days. By the third day, he called Dr. Johnston because he believed he was having a reaction, and again, Johnston NEVER CALLED HIM BACK. Our father DIED the next day. Why Johnston didn't have an awareness and a caution when recommending the vaccine to an elderly patient with a heart condition is truly unconscionable. When he was notified of my father's death, he didn't even have the decency to reach out and offer condolences to our family. A patient for 20 years! That says everything about his character. This dr. needs to RETIRE. His ego and greed is costing lives. Protect your loved ones.
What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Didn't explain conditions well
  • Didn't trust the provider's decisions
  • Long wait times
2 others found this helpful
Helpful
Shannon Bae – Dec 15, 2021
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Excellent service from Dr. Johnston and his entire staff. Fastest response time to queries of any practice I have ever dealt with. Lab results and comments back usually in one day, Makes time to discuss all details and reasons for visit Full write up on appointment finished and available before leaving office. Has my full trust and confidence.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
4 others found this helpful
Helpful
Gary A in Villa Park, CA – Dec 14, 2018
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He always spent more than ample time answering all of my questions and concerns and is up-to-date on all of the current research studies and procedures, where other doctors are not. He errs on the side of caution in ordering diagnostic tests to provide himself with more than ample information to diagnose and treat his patients and has a rare combination of both impeccable knowledge in his practice area, and an honest and humble bed-side manner in his treatment strategy.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
3 others found this helpful
Helpful
Jim in Long beach – Sep 23, 2018
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This office is horrible! If you want a Dr who will take the time to listen to your concerns, so that they know exactly what to test and look for then do not come to Dr. Warren Johnston, as it seems he has a protocol of 2 min with each patient, and will give everyone a stress echo and hear monitor regardless of their symptoms. I had to schedule a follow up visit, 2 months in advance, and go figure, I was running 5 min late, so I had my husband call the office while I was driving. My husband mind
What went well
  • Wait times
What could be improved
  • Office environment
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
4 others found this helpful
Helpful
Qtba2t13 in Aliso viejo, CA – Aug 02, 2018
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About Me

care philosophy

At St. Joseph Heritage Medical Group, we specialize in the prevention, treatment and reversal of heart disease and other cardiac conditions.
  • Cardiology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • University Of Rochester

    Medical School
American Board of Medical Specialties®
American Board of Internal Medicine®
Cardiovascular Disease
Internal Medicine
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.
  • English

  • Arabic

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Locations

St. Joseph Heritage Orange - Cardiology

St. Joseph Heritage Orange - Cardiology1140 W La Veta Ave Ste 430 Orange, CA 92868
1

Affiliated Hospitals

  • Providence St. Joseph Hospital Orange

    1100 W Stewart Dr
    Orange, CA 92868
    Recipient of 3
    hospital awards

    How patients felt about the care they received at this hospital.

    87%
    Patients said they were given information about recovering at home

    3% higher than the national average

    78%
    Patients said that doctors always listened to them and explained things well

    2% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality