See All Clinical Cardiac Electrophysiologists in Tarzana, CA
Dr. James Ong, MD

Dr. James Ong, MD

Clinical Cardiac Electrophysiology M
(207) 207 reviews

Telehealth available

Accepting New Patients


Dr. James Ong, MD is a clinical cardiac electrophysiologist in Tarzana, CA. Dr. Ong completed a residency at UCLA/West La Vamc. He currently practices at Heart Rhythm Specialists of Southern California and is affiliated with Los Robles Regional Medical Center. He accepts multiple insurance plans. Dr. Ong is board certified in Cardiovascular Disease.


  • Cedars-Sinai Cardiac Electrophysiology Fellowship, Fellowship Hospital — 1996
  • Cedars-Sinai Medical Center Cardiology Fellowship, Fellowship Hospital — 1995
  • UCLA/West La Vamc, Residency Hospital — 1992
  • West Los Angeles VA MC, Internship Hospital — 1990
  • U.C. Berkeley, Undergraduate School — 1984

Insurance Accepted

  • Aetna
  • Anthem
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Blue Shield of California
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • LACare
  • Molina Healthcare
  • Motion Picture Industry Health Plan
  • Providence Health Plans
  • UnitedHealthCare

* Please verify this information when scheduling an appointment.


Chinese, French, Mandarin, Mandarin, Spanish


  1. Heart Rhythm Specialists of Southern California

    1. 1
      18372 Clark St Ste 218, Tarzana, CA 91356 Existing Patients: 818-722-9749
    2. 2
      Heart Rhythm Specialists of Southern California
      32144 Agoura Rd Ste 218, Westlake Village, CA 91361 Existing Patients: 818-722-9747

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I had a very bad and dangerous case of Afib. It took two ablations to find all of the bad nerve sites, but he did it! (More than one ablation is common about 40% of the time.) No Afib for 2 1/2 years and perfectly normal nuclear stress tests and EKGs. Lucky a friend told me about Dr. Ong! It could have ended much differently.
Kathy P. — Jun 17, 2020
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Dr. James Ong, MD
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Frequently Asked Questions

Dr. Ong frequently treats Atrial Fibrillation, Heart Disease, and Atrial Flutter.  

Hospital Affiliations

  • Los Robles Regional Medical Center
  • West Hills Hospital & Medical Center
  • Encino Hospital Medical Center
  • Providence Tarzana Medical Center
  • Sherman Oaks Hospital