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Dr. James Ong, MD

Clinical Cardiac Electrophysiology*•Male•Age 62

Clinical Cardiac Electrophysiology*

Dr. James Ong, MD is a clinical cardiac electrophysiologist in Tarzana, CA and has over 34 years of experience in the medical field. He graduated from University of California in 1989. He is affiliated with West Hills Hospital & Medical Center. He is accepting new patients and telehealth appointments.

Dr. James Ong, MD

Heart Rhythm Specialists of Southern California

18372 Clark St Ste 218 Tarzana, CA 91356
Telehealth services available

Make an Appointment

(818) 342-5377
Telehealth services available

Accepting new patients

(818) 342-5377

At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This provider offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    America's 250 Best Hospitals Award™ • See hospitals
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*The information displayed here is sourced from independent information providers, such as state board websites, as of November 2023, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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Dr. Ong's Reviews

Likelihood to recommend Dr. Ong

4.9

211 ratings, 34 with a written review
5 Star
98%
98%
4 Star
1%
1%
3 Star
0%
0%
2 Star
0%
0%
1 Star
1%
1%
What went well
No reviews yet
What could be improved
No reviews yet

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RecentHighestLowestMost Helpful
Reply
What went well
  • 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
2 people found this helpful
Helpful
Apr 04, 2023
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Reply
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Eric B. – Sep 02, 2022
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Reply
What went well
  • 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
Richard Tiong – Nov 22, 2021
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Reply
What went well
  • 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 people found this helpful
Helpful
Kathy P. – Jun 17, 2020
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Reply
What went well
  • 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
5 people found this helpful
Helpful
Jan 30, 2020
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Reply
What went well
  • 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
4 people found this helpful
Helpful
Oct 24, 2019
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Reply
What went well
  • 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
5 people found this helpful
Helpful
Oct 24, 2019
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
4 people found this helpful
Helpful
Oct 24, 2019
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
2 people found this helpful
Helpful
Oct 19, 2019
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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 people found this helpful
Helpful
Oct 19, 2019
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
1 person found this helpful
Helpful
Apr 24, 2019
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
2 people found this helpful
Helpful
Feb 07, 2019
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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 people found this helpful
Helpful
Jan 31, 2019
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
2 people found this helpful
Helpful
Jan 22, 2019
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
9 people found this helpful
Helpful
Dec 11, 2018
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
1 person found this helpful
Helpful
Nov 29, 2018
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
1 person found this helpful
Helpful
Nov 01, 2018
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
Helpful
Nov 01, 2018
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
Oct 31, 2018
×Post a ResponseAre you Dr. James Ong, MD?
Reply
What went well
  • 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
Oct 24, 2018
×Post a ResponseAre you Dr. James Ong, MD?

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About Me

Care Philosophy

Education, education, education - Patients' understanding of their conditions is the most critical first step in their healing process. We emphasize patient...Read more

Biography

Dr. James Ong, board certified in cardiology and electrophysiology, received his medical education from the University of California San Diego School of...Read more
Watch video

Specialties*

  • Clinical Cardiac Electrophysiology

*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 California

Residency Hospital

University of California

Internship Hospital

University of California

Medical School

Cedars Sinai Medical Center

Fellowship Hospital, 1995

University of California

Residency Hospital, 1992

University of California

Medical School, 1989

  • English
  • French
  • Mandarin
  • Mandarin
  • Spanish
  • National Institute of Health Research Grant, 1996
  • Solomon Scholar, 1992
  • Merck Fellowship, 1995
  • The Relation Between Atrial Fibrillation Wavefront Characteristics and Accessory Pathway Conduction. Journal of Clinical Investigation 1995;96:2284-96., 1995
  • Focal source hypothesis of atrial fibrillation. J Electrocardiol. 1998;31 Suppl:32-4., 1998
  • Prevalence of Retrograde Accessory Pathway Conduction During Atrial Fibrillation. Journal of Cardiovascular Electrophysiology 1997;8(4);377-387., 1997
  • Pulmonary veins and ligament of Marshall as sources of rapid activations in a canine model of sustained atrial fibrillation. Circulation. 2001 Feb 27;103(8):1157-63., 2001
  • Arrhythmias Following Cardioverter-Defibrillator Implantation: Comparison of Epicardial and Transvenous Systems. American Journal of Cardiology 1995;75:137-40., 1995
  • Relation between ligament of Marshall and adrenergic atrial tachyarrhythmia. Circulation. 1999 Aug 24;100(8):876-83., 1999
  • End Afib
  • Atrial fibrillation ablation, 2009
  • Website, 2004

Common Questions and Answers

    Please call the office to learn more. (818) 342-5377

    What is the best way to schedule an appointment with Dr. James Ong, MD?

    View contact information to make an appointment.

    Can I use my insurance at Dr. James Ong, MD?

    Dr. James Ong, MD accepts various insurance plans. You can easily check if your insurance provider is accepted by using the Healthgrades insurance check. We recommend verifying your insurance coverage before scheduling an appointment to ensure a seamless experience.

    Does Dr. James Ong, MD accept new patients?

    New patients are generally accepted by Dr. James Ong, MD on Healthgrades. To arrange an appointment, call the number on Dr. Ong's profile.

    What is Dr. James Ong, MD's office address?

    Dr. Ong's office is located at 18372 Clark St Ste 218, Tarzana, CA 91356. You can find other locations and directions on Healthgrades.

    What languages does Dr. James Ong, MD speak?

    Dr. James Ong, MD is fluent in 5 languages: English, French, Mandarin, Mandarin, and Spanish.

    Focus on High Cholesterol

    Locations

    Heart Rhythm Specialists of Southern California

    Heart Rhythm Specialists of Southern California18372 Clark St Ste 218 Tarzana, CA 91356
    1
    • Call
    • Fax
    • Hours
      • Mon: 9:00am - 5:00pm
      • Tue: 9:00am - 5:00pm
      • Wed: 9:00am - 5:00pm
      • Thu: 9:00am - 5:00pm
      • Fri: 9:00am - 5:00pm
    • Directions

    Heart Rhythm Specialists of Southern California

    Heart Rhythm Specialists of Southern California32144 Agoura Rd Ste 218 Westlake Village, CA 91361
    2

    Affiliated Hospitals

    West Hills Hospital & Medical Center

    7300 Medical Center Dr
    West Hills, CA 91307
    Recipient of 10
    hospital awards

    America's 250 Best Hospitals Award™ (2024)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    Patient Safety Excellence Award™ (2024)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    View all awards

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

    79%
    Patients said they were given information about recovering at home

    5% lower than the national average

    72%
    Patients said that nurses always listened to them and explained things well

    2% lower than the national average

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