Ivan C Ho

Clinical Professor of Medicine (Clinician Educator)

Director of Cardiac Electrophysiology

EP Fellowship Program Director

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Dr. Ivan C. Ho is currently the Director of Cardiac Electrophysiology in Keck Medicine’s Cardiac and Vascular Institute, the Program Director of the Clinical Cardiac Electrophysiology Fellowship and Clinical Associate Professor of Medicine at the Keck School of Medicine of USC.

Dr. Ho grew up in Hong Kong, and completed his undergraduate studies at Harvard College, where he received his A.B. summa cum laude in Chemistry. After receiving his M.D. from Harvard Medical School, Dr. Ho completed internship, residency, cardiology and clinical cardiac electrophysiology fellowships at Massachusetts General Hospital in Boston. Following his training in 2008, he joined Los Angeles Cardiology Associates, a large academic cardiology practice based at the Good Samaritan Hospital, and became the Medical Director of its Complex Ablation Program, and the Associate Program Director of Harbor UCLA-Good Samaritan Hospital EP fellowship program. Prior to joining USC in 2019, he has already trained over 20 EP fellows and many visiting fellows from China, Korea, Japan and Hong Kong. Dr. Ho has an active electrophysiology practice in Los Angeles and the San Gabriel Valley, and has started Complex Ablation Program at other hospitals, having served as the Director of Electrophysiology at Garfield Medical Center and the Assistant Director of Atrial Fibrillation Research at Cedars-Sinai Heart Institute.

Dr. Ho is a cardiac electrophysiologist whose subspecialty expertise includes catheter ablation for complex cardiac arrhythmias using the latest mapping and imaging technology, device implantation and evaluation of patients with arrhythmias. He is particularly interested in catheter ablation of atrial fibrillation and ventricular tachycardia, and implantation of advanced cardiac devices for heart failure. Academically, Dr. Ho is an avid clinical educator. Besides training his own EP fellows at USC, he speaks regularly at national and international meetings, as well as in training courses targeted at EP fellows and early-career electrophysiologists, both in the theory and procedural practices of clinical electrophysiology.

His research interests include intracardiac imaging during complex ablation procedures, mapping techniques and algorithms in persistent atrial fibrillation, and optimization of EP laboratory workflow to improve care efficiency. He is a clinical investigator in a number of large, multi-center research studies on new catheter technology and cardiac devices, and is part of a large AF ablation national registry.


  • Los Angeles Business Journal: Top LA Doctors of 2022 – Leaders of Influence, 2022
  • Keck School of Medicine: Teaching Award Recipient – Clinical Cardiac Electrophysiology, 2020
  • Massachusetts General Hospital: “Resident that you would like to be taking care of your family” award, 2004
  • Harvard Medical School: Peabody Society Student Research Grant, 1998-1999
  • Harvard-Radcliffe Research Program: Harvard-Radcliffe Research Program Summer Research Grant Recipient, 1996
  • Harvard College, Faculty of Arts and Sciences: Detur Book Award, 1995
  • Harvard College, Faculty of Arts and Sciences: John Harvard Scholarship, 1994-1997


  • SuperMap algorithm: an efficient, safe and accurate modality for mapping and eliminating challenging cardiac arrhythmias Future Cardiol. 2024 Feb; 20(2):45-53. . View in PubMed
  • Amiodarone reduces the amount of ablation during catheter ablation for persistent atrial fibrillation Europace. 2014 Jul; 16(7):1007-14. . View in PubMed
  • The use of balloon atrial septostomy to facilitate difficult transseptal access in patients undergoing catheter ablation for atrial fibrillation J Cardiovasc Electrophysiol. 2011 Jul; 22(7):822-4. . View in PubMed
  • Comparison of the point-by-point versus catheter dragging technique for curative radiofrequency ablation of atrial fibrillation Pacing Clin Electrophysiol. 2011 Jan; 34(1):15-22. . View in PubMed
  • Intraprocedural volume imaging of the left atrium and pulmonary veins with rotational X-ray angiography: implications for catheter ablation of atrial fibrillation J Cardiovasc Electrophysiol. 2008 Mar; 19(3):293-300. . View in PubMed
  • Compression of the left atrium by the thoracic aorta in patients undergoing pulmonary vein isolation procedure for atrial fibrillation J Interv Card Electrophysiol. 2007 Jun; 19(1):29-36. . View in PubMed
  • Use of intracardiac echocardiography to guide implantation of a left atrial appendage occlusion device (PLAATO) Heart Rhythm. 2007 May; 4(5):567-71. . View in PubMed
  • Images in cardiovascular medicinePercutaneous epicardial mapping and ablation of a posteroseptal accessory pathway. Circulation. 2007 Apr 24; 115(16):e418-21. . View in PubMed
  • Compression of the posterior left atrium by a nonaneurysmal descending thoracic aorta in a patient undergoing pulmonary vein isolation procedure for atrial fibrillation J Cardiovasc Electrophysiol. 2007 Feb; 18(2):229. . View in PubMed
  • Fungal infection of implantable cardioverter-defibrillators: case series of five patients managed over 22 years Heart Rhythm. 2006 Aug; 3(8):919-23. . View in PubMed
  • Impact of the multicenter automatic defibrillator implantation trial on clinical practice Ann Noninvasive Electrocardiol. 2006 Jan; 11(1):20-7. . View in PubMed
  • Plasma alpha-tocopherol and coronary endothelium-dependent vasodilator function Circulation. 1999 Jul 20; 100(3):219-21. . View in PubMed