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Ida Sim


Informatics researcher and traveler to foreign lands

Dr. Ida Sim is a primary care doctor, informatics researcher and entrepreneur. She enjoys helping patients with general disease prevention as well as with managing chronic conditions.

Sim's current research focuses on using mobile device applications and sensors to improve health and manage disease for groups as well as individuals. She also studies methods for making research on patient care faster and less expensive. She is a co-founder of Open mHealth, a nonprofit organization that is building open source tools and standards to promote data integration for mobile health apps and sensors.

Sim earned her medical degree from Stanford University. She completed a residency in primary care internal medicine at Massachusetts General Hospital, followed by fellowships in ambulatory care and medical informatics at the Veterans Affairs Palo Alto Health Care System. She also has a doctorate in medical informatics from Stanford University.

Sim has served on several advisory committees on health information infrastructure for patient care and research, including committees of the National Research Council and National Academy of Medicine. The National Science and Technology Council honored her with a Presidential Early Career Award for Scientists and Engineers. She is a fellow of the American College of Medical Informatics and a member of the American Society for Clinical Investigation.

Sim co-directs the Informatics and Research Innovation Program at the UCSF Clinical and Translational Science Institute. She speaks Cantonese.

  • Education

    Stanford University, 1990

    Stanford University, PhD, Medical Informatics, 1997

  • Residencies

    Massachusetts General Hospital, Internal Medicine, 1993

  • Fellowships

    VA Palo Alto Health Care System, Ambulatory Care, 1996

    VA Palo Alto Health Care System, Medical Informatics, 1997

  • Board Certifications

    Internal Medicine, American Board of Internal Medicine

  • Academic Title


  • Languages


I am passionate about using new digital technologies to enhance and support compassionate primary care of the highest quality.

Where I see patients (1)

    My reviews


    Overall Experience
    53 Ratings
    About our process
    Sep 08, 2023
    Provider was exceptional
    May 18, 2023
    Service felt good
    May 15, 2023
    Dr. Sim is wonderful.
    Apr 06, 2023
    Oct 29, 2022
    I have recommended her to several friends. Alas! Dr Sim is not taking new patients.
    Aug 13, 2022
    The doctor was great.
    Jun 13, 2022
    Dr. Sim was very clear on follow up care plans and lab tests I will need to complete prior to my next visit.
    Mar 17, 2022
    I have recommended Dr. Sim to several friends
    Mar 03, 2022

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