School of Medicine


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  • Gregory M. Heestand, MD

    Gregory M. Heestand, MD

    Clinical Assistant Professor, Medicine - Oncology

    Bio Dr. Heestand is a board-certified medical oncologist with a focus on gastrointestinal cancers, primarily hepatocellular carcinoma, cholangiocarcinoma, and gallbladder cancer. He currently serves as the medical oncology champion of the Stanford Hepatobiliary Tumor Board, as well as the principal investigator of multiple clinical trials. He also collaborates with campus laboratories to help develop new biomarker and treatment technologies. Dr. Heestand is a member of the ECOG-ACRIN gastrointestinal committee and serves as a representative to the NCI Hepatobiliary Task Force. He is also the director of the Stanford Medical Oncology Fellowship Program.

    Dr. Heestand and his team take great pride in helping patients and their families face gastrointestinal cancer.

    Outside of the clinic, Dr. Heestand enjoys playing the piano, teaching his kids about music, cooking for friends and family, and surfing the internet for interesting things to read.

  • Sandra Horning

    Sandra Horning

    Professor of Medicine, Emerita

    Current Research and Scholarly Interests Clinical Interests: Hodgkin's disease and non-Hodgkin's lymphoma. Research Interests: clinical trials in Hodgkin's disease and malignant lymphoma including high dose therapy and autografting, complications of cytotoxic therapy, novel therapeutics, and clinicopathologic correlations.

  • Robert Hsieh

    Robert Hsieh

    Adjunct Clinical Assistant Professor, Medicine - Oncology

    Bio Robert W. Hsieh, M.D. Ph.D. is a medical oncologist who specializes in the treatment of prostate cancer, bladder cancer, kidney (renal) cancer and testicular cancer as a member of Stanford's multi-disciplinary Urologic Cancer Program. Dr. Hsieh obtained his M.D. and Ph.D. degrees at the University of Chicago (Pritzker School of Medicine) and subsequently came to Stanford to complete his Internal Medicine residency and Hematology and Oncology fellowship training (with a clinical focus on genitourinary cancers).

    Dr. Hsieh has also had extensive experience in basic lab research (cancer stem cells, target identification and validation, pre-clinical drug discovery) having done post-doctoral work in the Clarke Lab in the Institute for Stem Cell Biology and Regenerative Medicine. He is currently involved in early phase clinical trials in immuno-oncology in industry.

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