Skip to Main Content

Zian H. Tseng


Cardiologist and electrophysiologist

Dr. Zian H. Tseng is a cardiologist and electrophysiologist (a specialist in heart rhythm disorders). He is an expert in determining the risk of patients prone to sudden cardiac death (SCD) and ventricular arrhythmias, which can cause SCD. He also specializes in catheter ablation of complex arrhythmias (a procedure to destroy heart tissue causing abnormal rhythms), implanting defibrillators and resynchronizing heart devices. He has special expertise in performing these procedures for patients with congenital heart disease. He also helps develop new devices to treat heart rhythm disorders.

Tseng is the principal investigator for the POstmortem Systematic InvesTigation of Sudden Cardiac Death (POST SCD) study, a collaboration with the San Francisco Office of the Chief Medical Examiner that has been funded by the National Institutes of Health since 2010. The study's goal is to more accurately define SCD and determine its underlying causes, risk factors and genetics. He is also the principal investigator for the San Francisco POstmortem Systematic InvesTigation of Sudden Death in the Young (POST SDY) registry, which is funded by the Centers for Disease Control and Prevention, and works to more accurately define sudden death in pediatric populations. In addition, he is studying the risk of sudden death with the use of Tasers by law enforcement agencies.

A Bay Area native, Tseng completed undergraduate studies in molecular biology and biochemistry at the University of California, Berkeley and earned his medical degree at UCSF, where he also completed a year of graduate studies in biomedical sciences. He completed subspecialty training in internal medicine, cardiology and cardiac electrophysiology at UCSF.

  • Education

    UCSF School of Medicine, 1998

  • Residencies

    UCSF Medical Center, 2000

  • Fellowships

    UCSF Medical Center, Cardiology, 2002

    UCSF Medical Center, Cardiac Electrophysiology, 2004

  • Academic Title


  • Languages


Where I see patients (4)

    My reviews


    Overall Experience
    57 Ratings
    Explained things in a way that was easy to understand
    57 Ratings
    Did the doctor pay attention to your concerns
    57 Ratings
    Gave easy to understand instructions about taking care of health problems or concerns
    53 Ratings
    Knew the important information about your medical history
    55 Ratings
    The provider showed respect for what you had to say
    55 Ratings
    The provider spent enough time with me
    54 Ratings

    My work

    Sudden Cardiac Death More Likely to Fell Persons with HIV Infection

    Please check with your health insurance plan regarding coverage for this type of care. Not all providers at UCSF are covered by every insurance plan.