Zian Tseng, MD

Cardiologist and electrophysiologist

Dr. Zian H. Tseng, a cardiologist and electrophysiologist, is an expert in determining the risk of patients prone to sudden cardiac death (SCD) and ventricular arrhythmias. He also specializes in the ablation of complex arrhythmias, implanting defibrillators and resynchronizing heart devices, and extracting the leads or wires for heart devices. In addition, Tseng is involved with developing new device treatments.

In 2010, Tseng was awarded a five-year grant from the National Institutes of Heath to more accurately define SCD, the conditions underlying SCD, and its risk factors. He also is studying the genetics of SCD and the risk of sudden death with the use of Tasers by law enforcement agencies. A Bay Area native, he completed undergraduate studies in molecular biology and biochemistry at the University of California, Berkeley and earned a medical degree at UCSF, where he also completed a year of graduate studies in biomedical sciences. He completed internal medicine, cardiology, and cardiac electrophysiology subspecialty training at UCSF, where he is a professor of medicine.


Asian Heart and Vascular Center
1600 Divisadero St., Second Floor, Suite C-244
San Francisco, CA 94115
Appointments: (415) 885-3678
Events: (415) 885-3678
Fax: (415) 885-3676

Cardiac Electrophysiology and Arrhythmia Service
400 Parnassus Ave., Fifth Floor
San Francisco, CA 94143
Phone: (415) 353-2554
Fax: (415) 353-2528

Hours: Monday to Friday
8 a.m. – 5 p.m.

Cardiovascular Genetics Program
400 Parnassus Avenue, Plaza Level, Room 94
San Francisco, CA 94143
Phone: (415) 353-2873
Fax: (415) 476-5355

Hours: Monday
noon – 4 p.m

Conditions & Treatments

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UCSF School of Medicine 1998


UCSF Medical Center 2000


UCSF Medical Center, Cardiology 2002
UCSF Medical Center, Cardiac Electrophysiology 2004

Selected Research and Publications

  1. Devinsky O, Kim A, Friedman D, Bedigian A, Moffatt E, Tseng ZH. Incidence of cardiac fibrosis in SUDEP and control cases. Neurology. 2018 Jun 01.
  2. Tseng ZH. Sudden Cardiac Deaths-WHO Says They Are Always Arrhythmic? JAMA Cardiol. 2018 May 02.
  3. Devinsky O, Friedman D, Cheng JY, Moffatt E, Kim A, Tseng ZH. Author response: Underestimation of sudden deaths among patients with seizures and epilepsy. Neurology. 2018 Mar 13; 90(11):532.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.