Portrait of Ethan J. Weiss
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Ethan J. Weiss, MD

Cardiology
Portrait of Ethan J. Weiss
Portrait of Ethan J. Weiss
ucsf logo

Ethan J. Weiss, MD

Cardiology

On this page

About me

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.

Education & training

Board certification

  • Cardiovascular Disease, American Board of Internal Med/Cardiovascular Dis

Fellowship

  • UCSF Medical Center - OMAG

Residency

  • Johns Hopkins Hospital

Internship

  • Johns Hopkins Hospital

Degree

  • MD, Johns Hopkins University School of Medicine

My expertise

Reviews

Average rating

5
5 out of 5 Stars
33 ratings
About provider reviews

Showing 1-6 of 6 reviews

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  • 5 out of 5 Stars
    December 24, 2025

    Dr Ethan Weiss is an absolute gem and I feel so fortunate that I am able to have him as my cardiologist. He is so knowledgeable, helpful and is so kind and extends himself in ways that blows me away.

  • 5 out of 5 Stars
    November 15, 2025

    Dr Weiss is AMAZING. I always feel he listens and anwers all of my questions. Very patient. World class care.

  • 5 out of 5 Stars
    September 19, 2025

    Dr. Weiss is always thoughtful, concerned about my issues and responsive.

  • 5 out of 5 Stars
    December 21, 2024

    Dr Weiss is an excellent doctor, a great communicator and very practical.

  • 5 out of 5 Stars
    November 10, 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.

  • 5 out of 5 Stars
    July 19, 2024

    Dr. Weiss is a very thoughtful listener and provider of information.

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