Dr. James Ong, MD

Dr. James Ong, MD

Clinical Cardiac Electrophysiology •  Male

  
Accepting new patients
Telehealth services available

Dr. James Ong, MD is a Clinical Cardiac Electrophysiologist in Tarzana, CA. He is affiliated with medical facilities such as West Hills Hospital & Medical Center and Los Robles Regional Medical Center. He is accepting new patients and has indicated that he accepts telehealth appointments. Be sure to call ahead with Dr. Ong to book an appointment.


Locations

Heart Rhythm Specialists of Southern California

New Patient?
(818) 342-5377
Tarzana18372 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
    • Sat: closed
    • Sun: closed
  • Directions
Heart Rhythm Specialists of Southern California32144 Agoura Rd Ste 218 Westlake Village, CA 91361
2

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 Cardiac Care Excellence Award™ See hospitals

Dr. Ong's Reviews

Likelihood to recommend Dr. Ong

5.0

Based on 207 ratings

5 Stars
98.06763285024155%
(203)
4 Stars
0.966183574879227%
(2)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
0.966183574879227%
(2)
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Dr. Ong?
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Reply Flag
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.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
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Kathy P. – Jun 17, 2020
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Everyone in the office is very friendly and courteous . I like coming here.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Was this helpful?
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Jan 30, 2020
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Zoe is great to work with
What went well
No results
What could be improved
No results
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Oct 24, 2019
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Experienced Dr we can trust and always recommend to all my relatives. He has a magic hand since I came to his office I feel younger and healthier
What went well
No results
What could be improved
No results
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Oct 24, 2019
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I have trust in Dr. Ong's skills
What went well
No results
What could be improved
No results
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Oct 24, 2019
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I have the utmost confidence and trust in Dr. Ong. I wouldn't see anyone else.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Was this helpful?
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Oct 19, 2019
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Reply Flag
Dr.Ong is a miracle worker. His level of expertise is awesome. He s wonderfully caring, dedicated, and talented. I owe my improved health and vitality to Dr. Ong. He saved my life. Thank you again Dr. Ong
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Was this helpful?
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Oct 19, 2019
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Reply Flag
WONDERFUL DOCTOR, I FEEL WELL CARED FOR.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Was this helpful?
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Apr 24, 2019
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THE OFFICE STAFF IS KIND, PERSONABLE, PLEASANT AND FRIENDLY AT ALL TIMES
What went well
No results
What could be improved
No results
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Feb 07, 2019
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GREAT DOCTOR & HUMAN BEING!
What went well
No results
What could be improved
No results
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Jan 31, 2019
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FEEL GREAT AFTER PROCEDURE THANK YOU!!
What went well
No results
What could be improved
No results
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Jan 22, 2019
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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
What went well
No results
What could be improved
No results
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Dec 11, 2018
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EXCELLENT TREATMENT
What went well
No results
What could be improved
No results
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Nov 29, 2018
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He saved my life a couple times!
What went well
No results
What could be improved
No results
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Nov 01, 2018
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Love Dr. Ong & his help , they go above and beyond, always with a smile on their face!
What went well
No results
What could be improved
No results
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Nov 01, 2018
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Dr. Ong you are steller, you personify what bedside manner is- kind, patient & compassionate . We Love You!
What went well
No results
What could be improved
No results
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Oct 31, 2018
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CHRISTINA & ZOE ARE FABULOUS AND VERY PROFESSIONAL. I HIGHLY RECOMMEND THIS OUTSTANDING TEAM
What went well
No results
What could be improved
No results
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Oct 24, 2018
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VERY PLEASED AND SATISFIED WITH MY TREATMENT BY DR. OMG AND HIS STAFF
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Was this helpful?
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Sep 26, 2018
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Reply Flag
GREAT DOCTOR! HAVE COMPLETE CONFIDENCE IN HIS DECISIONS
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Was this helpful?
thumbs up icon option
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Jun 30, 2018
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Reply Flag
he is the best ! did my oblation and am all good thanks to him!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Was this helpful?
thumbs up icon option1
thumbs down icon option
ron in simi valley, ca – May 12, 2018
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Insurance Check

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Dr. Ong accepts

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

(818) 342-5377

Dr. Ong accepts the following insurance:

Aetna
Aetna HMO
Anthem
Advantage-CA HMO
Advantage-CA PPO
Balanced (Prudent Buyer)-CA PPO
Blue Cross (CACare) - Individual-CA HMO
Blue Cross (CACare) - Large Group-CA HMO
Blue Cross (CACare) - Small Group-CA HMO
Blue Cross (Prudent Buyer) - Individual-CA PPO
Blue Cross (Prudent Buyer) - Large Group-CA PPO
Blue Cross (Prudent Buyer) - Small Group-CA PPO
Blue Cross (Prudent Buyer) - Student Health-CA PPO
Blue Cross-CA HMO-POS
Bronze (Prudent Buyer PPO/ Small Grp)-CA PPO
Bronze EPO (Prudent Buyer / Small Grp)-CA PPO
Bronze EPO (Prudent Buyer EPO/ Small Grp)-CA
Bronze w/ H.S.A (Prudent Buyer PPO/Small Grp)-CA PPO
Dignity Health Custom Advantage-CA HMO
Dignity Health EPO / PPO-CA
Dignity Health PHC EPO & HDP/HSA-CA
Dignity Health Ventura EPO/PPO-CA
EPO-CA
Gold (CaliforniaCare HMO/ Small Grp) HMO
Gold (Prudent Buyer PPO/ Small Grp)-CA PPO
Gold Advantage-CA PPO
Gold EPO (Prudent Buyer / Small Grp)-CA PPO
Gold EPO (Prudent Buyer EPO/ Small Grp)-CA
Gold Priority Select-CA HMO
Gold Select (Select / Small Grp)-CA HMO
Lumenos Plans-CA PPO
Major Risk Medical Insurance Program (MRMIP) - Prudent Buyer-CA PPO
MemorialCare Custom-CA PPO
National (BlueCard Basic) PPO
National (BlueCard) PPO
PERS Choice / PERSCare Providers-CA PPO
PERS Traditional-CA HMO
Platinum (CaliforniaCare HMO/ Small Grp) HMO
Platinum (Prudent Buyer PPO/ Small Grp)-CA PPO
Platinum Priority Select-CA HMO
Platinum Select (Select / Small Grp)-CA HMO
Priority Select-CA HMO
Select Plus-CA HMO
Select-CA HMO
Silver (CaliforniaCare HMO/ Small Grp) HMO
Silver (Prudent Buyer PPO/ Small Grp)-CA PPO
Silver Advantage-CA PPO
Silver EPO (Prudent Buyer EPO/ Small Grp)-CA
Silver EPO w/ H.S.A (Prudent Buyer/Small Grp)-CA PPO
Silver Priority Select-CA HMO
Silver Select (Select / Small Grp)-CA HMO
Silver w/ H.S.A (Prudent Buyer PPO/Small Grp)-CA PPO
Tenet Network-CA PPO
Traditional
Traditional PPO
UC Care-CA PPO
UC CORE-CA PPO
UC Health Savings Plan-CA
UC High Option Supplement to Medicare-CA
UC Medicare with Prescription Drugs-CA PPO
UC Medicare without Prescription Drugs-CA PPO
UC Resident and Fellows-CA PPO
UCSHIP-CA PPO
USC Plan (Two Tiered Network)-CA HMO
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of California
Advantage Preferred DirectAccess Plus PPO
Select Plus HMO
Blue Shield of California
Access Plus Savenet
Local Access Plus HMO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
LACare
Molina Healthcare
Motion Picture Industry Health Plan
Providence Health Plans
UnitedHealthCare
United Healthcare

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

Heart Disease
very high
very high

Treatment Frequency

Dr. Ong treats Heart Disease more than 99% of his peers

Dr. Ong treats this condition 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

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

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

A board-certified Cardiac Electrophysiologist, Dr. James Ong has been performing complex arrhythmia ablation since 1993. He is currently certified...Read more

Specialties

  • Clinical Cardiac Electrophysiology

Board Certifications

  • Cardiovascular Disease
  • Clinical Cardiac Electrophysiology

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
West Los Angeles VA MC
Internship Hospital
1984
U.C. Berkeley
Undergraduate School

Languages

  • English
  • French
  • Mandarin
  • Mandarin
  • Spanish

Awards

  • Healthgrades Honor Roll
  • Solomon Scholar, 1992
  • National Institute of Health Research Grant, 1996
  • Merck Fellowship, 1995

Media & Publications

  • >The Relation Between Atrial Fibrillation Wavefront Characteristics and Accessory Pathway Conduction. Journal of Clinical Investigation 1995;96:2284-96., 1995
  • >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
  • >Relation between ligament of Marshall and adrenergic atrial tachyarrhythmia. Circulation. 1999 Aug 24;100(8):876-83., 1999
  • >Focal source hypothesis of atrial fibrillation. J Electrocardiol. 1998;31 Suppl:32-4., 1998
  • >End Afib,
  • >Atrial fibrillation ablation, 2009
  • >Website, 2004

Frequently Asked Questions

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Affiliated Hospitals

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

Learn more

West Hills Hospital & Medical Center

West Hills, CA

64% Patient experience rating, 5% lower than the national average

  • Patient Safety Excellence Award™ (2019, 2018)

Los Robles Regional Medical Center

Thousand Oaks, CA

71% Patient experience rating, 2% higher than the national average

Encino Hospital Medical Center

Encino, CA

60% Patient experience rating, 9% lower than the national average

  • Patient Safety Excellence Award™ (2020, 2019)

Providence Tarzana Medical Center

Tarzana, CA

66% Patient experience rating, 3% lower than the national average

  • America's 250 Best Hospitals Award™ (2020, 2019, 2018)
  • America's 50 Best Hospitals Award™ (2020, 2019)
  • Cardiac Care Excellence Award™ (2020, 2019)
  • Patient Safety Excellence Award™ (2020, 2019)
  • America's 100 Best Hospitals Award™ (2018)

Sherman Oaks Hospital

Sherman Oaks, CA

61% Patient experience rating, 8% lower than the national average

  • Patient Safety Excellence Award™ (2020, 2019, 2018)
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