Dr. James Ong, MD

Dr. James Ong, MD

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Clinical Cardiac Electrophysiology  ·  
Male
(193)

Accepting new patients

Dr. James Ong, MD is a clinical cardiac electrophysiologist in Tarzana, CA and has been practicing for 23 years. He specializes in clinical cardiac electrophysiology and cardiology.Read his story
NEW PATIENTS
(805) 242-5742
EXISTING PATIENTS
(818) 342-5377
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Heart Rhythm Specialists of Southern California

18372 Clark St Ste 218

Tarzana, CA 91356
Get Directions
New Patients
(805) 242-5742
Existing Patients
(818) 342-5377

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Cigna
  • Motion Picture Industry Health Plan
  • Providence Health Plans
  • UnitedHealthCare

Background Check

No malpractice claims found for California
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check Dr. Ong's experience treating your condition or procedure

Dr. Ong's Top Procedures and Conditions

Treatment Frequency
Atrial Flutter
very high
very high

Treatment Frequency

Dr. Ong treats Atrial Flutter more than 100% of his peers

Dr. Ong treats this condition more than 100% of his peers

Cardiac Electrophysiology
very high
very high

Treatment Frequency

Dr. Ong performs Cardiac Electrophysiology more than 99% of his peers

Dr. Ong performs this procedure more than 99% of his peers

Arrhythmias
very high
very high

Treatment Frequency

Dr. Ong treats Arrhythmias more than 99% of his peers

Dr. Ong treats this condition more than 99% of his peers

Rating Includes other areas of care:

  • Atrial Fibrillation
  • Cardiac Arrest
  • Familial Atrial Fibrillation
  • Multifocal Premature Beats
  • Paroxysmal Supraventricular Tachycardia
  • Ventricular Fibrillation
  • Ventricular Fibrillation, Idiopathic
  • Ventricular Fibrillation, Paroxysmal
Hide other areas of care
Learn more about Arrhythmias
Learn more about experience ratings

Dr. Ong's conditions and procedures:

  • Ablation
  • Ablation for Treatment of Atrial Fibrillation
  • Ablation for Treatment of Cardiac Arrhythmias
  • Aneurysm
  • Angina and Acute Coronary Syndrome
  • Angiography
  • Aortic Aneurysm
  • Aortic Ectasia
  • Aortic Stenosis
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Arrhythmias
  • Arrhythmogenic Right Ventricular Dysplasia, Familial, 1
  • Atrial Fibrillation
  • Atrial Fibrillation Surgery
  • Atrial Flutter
  • Automatic Implantable Cardioverter Defibrillator (ICD) Implantation
  • Autonomic Disorders
  • Benign Tumor
  • Brugada Syndrome
  • Cardiac Catheterization (incl. Coronary Angiography)
  • Cardiac Electrophysiology
  • Cardiac Imaging
  • Cardiac Resynchronization Therapy
  • Cardiomegaly
  • Cardiomyopathy
  • Cardiovascular Stress Test
  • Cardioversion
  • Cardioversion, Elective
  • Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair
  • Carotid Artery Disease
  • Chest Pain
  • Congenital Heart Defects
  • Congenital Heart Disease
  • Congestive Heart Failure
  • Coronary Angioplasty, Atherectomy and Stent
  • Coronary Artery Disease (CAD)
  • Defibrillator Implantation
  • Ebstein's Anomaly
  • Echocardiography
  • Electrophysiological Study
  • Endocarditis
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Block
  • Heart Disease
  • Heart Palpitations
  • Heart Surgery
  • Hyperlipidemia
  • Hypertension
  • Hypertensive Chronic Kidney Disease
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypertensive Heart Disease
  • Hypotension
  • Insertion of Left Ventricular Lead for Pacemaker or Cardioverter and-or Defibrillator
  • Limb Swelling
  • Limb Swelling Caused by Fluid Overload
  • Long QT Syndrome
  • Marfan Syndrome
  • Mitral Valve Disease
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Nonthoracotomy ICD Implantation
  • Pacemaker Insertion or Replacement
  • Paroxysmal Atrial Tachycardia
  • Paroxysmal Supraventricular Tachycardia
  • Pericardial Disease
  • Primary Pulmonary Hypertension
  • Pulmonary Disease
  • Pulmonary Edema
  • Pulmonary Hypertension
  • Pulmonary Valve Disease
  • Radiofrequency Catheter Ablation
  • Removal or Revision of Pacemaker or Cardioverter and-or Defibrillator
  • Septal Defect
  • Sudden Arrhythmia Death Syndrome
  • Supraventricular Tachycardia
  • Syncope
  • Thrombolysis
  • Thrombosis
  • Tilt Table Testing
  • Tilt Testing or Cardiac Event Monitors
  • Tricuspid Valve Disease
  • Ultrasound, Cardiac
  • Vascular Disease
  • Vascular Surgical Procedure
  • Ventricular Fibrillation
  • Wolff-Parkinson-White Pattern

About Me

Education, education, education - Patients' understanding of their conditions is the most critical first step in their healing process. We emphasize patient teaching in every aspect of our encounters with our patients.

Specialties

  • Clinical Cardiac Electrophysiology
  • Cardiology

Board Certifications

  • Cardiology
  • Cardiovascular Disease
  • Clinical Cardiac Electrophysiology
  • Internal Medicine
Learn why a board certification matters

Education

1996
Cedars-Sinai Cardiac Electrophysiology Fellowship
Fellowship Hospital
1995
Cedars-Sinai Medical Center Cardiology Fellowship
Fellowship Hospital
1992
Ucla/west La Vamc
Residency Hospital
1990
UCLA/West La Va Medical Center
Internship Hospital
1989
University Of California, San Diego, School Of Medicine
Medical School
1984
U.C. Berkeley
Undergraduate School
1996
1995
1992
1990
1989
1984

Languages

  • French
  • Mandarin
  • Spanish
  • Taiwanese
Less...

Awards

  • Healthgrades Honor Roll
  • Solomon Scholar, 1992
  • National Institute of Health Research Grant, 1996
  • Merck Fellowship, 1995
Learn more about recognized doctors

Media & Publications

  • Relation between ligament of Marshall and adrenergic atrial tachyarrhythmia. Circulation. 1999 Aug 24;100(8):876-83., 1999
  • Arrhythmias Following Cardioverter-Defibrillator Implantation: Comparison of Epicardial and Transvenous Systems. American Journal of Cardiology 1995;75:137-40., 1995
  • 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
  • Focal source hypothesis of atrial fibrillation. J Electrocardiol. 1998;31 Suppl:32-4., 1998
  • The Relation Between Atrial Fibrillation Wavefront Characteristics and Accessory Pathway Conduction. Journal of Clinical Investigation 1995;96:2284-96., 1995
  • End Afib,
  • Website, 2004
  • Atrial fibrillation ablation, 2009

Dr. Ong's Reviews

Likelihood to recommend Dr. Ong

4.9

Based on 193 reviews

5 Stars
97.92746113989638%
(189)
4 Stars
1.0362694300518134%
(2)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
1.0362694300518134%
(2)

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Dr. Ong?
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Average Wait Time
  • 10 – 15 minutes
Dr. Ong's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. James Ong, MD
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WONDERFUL DOCTOR, I FEEL WELL CARED FOR.
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THE OFFICE STAFF IS KIND, PERSONABLE, PLEASANT AND FRIENDLY AT ALL TIMES
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GREAT DOCTOR & HUMAN BEING!
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FEEL GREAT AFTER PROCEDURE THANK YOU!!
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Dr James Ong IS the Doctor you want to go to if you have A Fib! Hands down the BEST! He took an extra 2 hours to make sure he hit every area of my heart that was causing issues with Rhythm, I have complete confidence in Dr Ong and his team at West Hills Hospital was truly amazing! I feel like I have a second chance at life after having a 6 hour ablation. Dr Ong takes the time to explain and answers your questions in a manner that is comforting and concise. I highly recommend Dr Ong. CA IN WH
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EXCELLENT TREATMENT
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He saved my life a couple times!
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Love Dr. Ong & his help , they go above and beyond, always with a smile on their face!
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Dr. Ong you are steller, you personify what bedside manner is- kind, patient & compassionate . We Love You!
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CHRISTINA & ZOE ARE FABULOUS AND VERY PROFESSIONAL. I HIGHLY RECOMMEND THIS OUTSTANDING TEAM
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VERY PLEASED AND SATISFIED WITH MY TREATMENT BY DR. OMG AND HIS STAFF
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GREAT DOCTOR! HAVE COMPLETE CONFIDENCE IN HIS DECISIONS
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DR. ONG IS A MIRACLE WORKER. HIS LEVEL OF EXPERTISE IS AWESOME. HE IS WONDERFULLY CARING,DEDICATED , AND TALENTED. I OWE MY IMPROVED HEALTH AND VITALITY TO DR. ONG. HE SAVED MY LIFE! THANK YOU AGAIN DR. ONG.
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he is the best ! did my oblation and am all good thanks to him!
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DR. ONG HAS BEEN MY DOCTOR FOR MANY YEARS. HE PROVIDES EXCELLENT CARE AND HIGH QUALITY SERVICE AT EVERY VISIT. THE SAME GOES FOR HIS STAFF!
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He cured me of my permanent afib. His years of expertise in the field made me decide to finally have an ablation even though I am asymptomatic. Been afib free for almost 3 weeks after my ablation and that is a feat by itself for someone who has permanent afib for the past 6 years. I can't thank him enough for working his wonders on me. May he be blessed with long life so that he can help more people.
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DR. ONG SAVED MY LIFE. I AM ETERNALLY GRATEFUL.
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Dr. Ong is one of the best doctors I have ever worked with. He is very caring and excellent in his profession. He has cured me totally of my AFIB and totally helped to extend my life. I highly recommend Dr. Ong and his staff to anyone needing treatment in his specialty.
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DR. ONG IS FANTASTIC- VERY KNOWLEDGABLE AND THOUGHTFUL. A GREAT DOCTOR!
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DR. ONG GREATLY HELPED ME WITH MY AFIB, HE IS GREAT!
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Locations

Heart Rhythm Specialists of Southern California

New Patient?
(805) 242-5742
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
    • Sat: closed
    • Sun: closed
  • Directions

Insurance accepted

Accepted insurance can change. Please double-check when making an appointment.

Aetna
Blue Cross Blue Shield
Cigna
Motion Picture Industry Health Plan
Providence Health Plans
UnitedHealthCare
United Healthcare

Affiliated Hospitals

Check the quality of care at hospitals where Dr. Ong treats patients.

Learn more

Sherman Oaks Hospital

Sherman Oaks, CA