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Katherine Van Loon


Gastrointestinal oncologist

Dr. Katherine Van Loon is a specialist in gastrointestinal cancers, with a particular interest in colon cancer.

With a background in public health, Van Loon's research is focused on epidemiology – the study of which populations develop diseases and which factors contribute – as well as outcomes in gastrointestinal malignancies. She has a long-standing interest in global health and has also studied the epidemiology of gastrointestinal cancers in the developing world.

Van Loon earned her master's degree in public health from the Yale School of Public Health before attending the Medical College of Georgia. She completed a residency in internal medicine at Beth Israel Deaconess Medical Center, a teaching hospital of Harvard Medical School. She came to UCSF for a fellowship in oncology in 2009.

Van Loon is a member of the American Society of Clinical Oncology (ASCO). She received a Young Investigator Award from the ASCO Conquer Cancer Foundation in 2012.

  • Education

    Medical College of Georgia, 2006

  • Residencies

    Beth Israel Deaconess Medical Center, Harvard Medical School, Internal Medicine, 2009

  • Fellowships

    UCSF Medical Center, Oncology, 2011

  • Board Certifications

    Medical Oncology, American Board of Internal Medicine

  • Academic Title

    Associate Professor

Where I see patients (1)

    My reviews


    Overall Experience
    79 Ratings
    About our process
    Feb 01, 2023
    She was excellent. Fully informed about my condition explained the treatment and reasons for it and was clearly intelligent and anxious to help.
    Dec 14, 2022
    All was good
    Feb 02, 2022
    Always amazing
    Oct 27, 2021
    Dr Van Loon is excellent. An understanding oncologist who explains things very clearly and listens to her patient's needs.
    Aug 11, 2021
    Provider is leveraging a couple other physicians before offering solid treatment options so while I didn't leave with a solid plan the work is being done and I very much appreciate that.
    Aug 04, 2021
    Dr Van Loon is excellent as an oncologist. She is truthful but tactful knowledgeable and professional listens to my concerns and gives good advice. Having cancer is a difficult journey and I am very grateful to Dr Van Loon for her continuing help and in particular for fighting my corner with Blue Shield insurance to get the latest treatment for me.
    May 27, 2021
    My doctor is excellent.