Skip to Main Content

Dr. Ethan Weiss is a cardiologist whose special interests include preventive cardiology, the genetics of coronary disease, risk assessment for heart conditions and heart disease in the young.

In his research, Weiss uses genetic models to better understand the mechanisms of metabolic disorders linked to heart disease, such as obesity, fatty liver disease and diabetes. He also studies the blood clotting system, seeking to identify novel ways to safely block clots associated with heart attack and stroke without causing an increase in bleeding.

Weiss earned his medical degree at Johns Hopkins School of Medicine. He completed an internship and a residency on the Osler Medical Service of the Johns Hopkins Hospital. He came to UCSF in 1998 as a cardiology fellow.

Read a Q&A with Weiss.

  • Board Certifications

    American Board of Internal Med/Cardiovascular Dis, Cardiovascular Disease

  • Fellowships

    UCSF Medical Center - OMAG

  • Residencies

    Johns Hopkins Hospital

  • Internship

    Johns Hopkins Hospital

  • Degree

    MD, Johns Hopkins University School of Medicine

Where I see patients (2)

    My reviews

    5.0

    Overall Experience
    30 Ratings
    About our process
    Nov 16, 2025
    Dr Weiss is AMAZING. I always feel he listens and anwers all of my questions. Very patient. World class care.
    Sep 20, 2025
    Dr. Weiss is always thoughtful, concerned about my issues and responsive.
    Dec 22, 2024
    Dr Weiss is an excellent doctor, a great communicator and very practical.
    Nov 11, 2024
    Dr Ethan Weiss is an absolute treasure. 5 rating is not flippantly given en masse here and is not a high enough rating, not even close.
    Jul 20, 2024
    Dr. Weiss is a very thoughtful listener and provider of information.

    Share