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Andrew H. Ko


Colorectal and gastrointestinal cancer specialist
East Coast transplant and lover of piano, singing and sports

Dr. Andrew H. Ko is a specialist in colorectal and gastrointestinal cancers, with a particular focus on pancreatic cancer. He is interested in the development of new treatment strategies, including molecularly targeted therapies, which block cancer cell activity by interfering with specific molecules.

Ko earned an undergraduate degree in applied mathematics and biology at Brown University. He earned his medical degree at the Johns Hopkins School of Medicine. After a residency at Beth Israel Deaconess Medical Center, he completed a fellowship in medical oncology at Stanford University. He joined UCSF in 2001.

  • Education

    Johns Hopkins University, 1995

  • Residencies

    Beth Israel Hospital-Boston, MA, Internal Medicine, 1998

  • Fellowships

    Stanford University Medical Center, 2001

  • Board Certifications

    Medical Oncology, American Board of Internal Medicine

  • Academic Title


I am honored to partner with patients as I provide compassionate, thoughtful and cutting-edge care during a challenging time in their lives.

Where I see patients (2)

    My reviews


    Overall Experience
    211 Ratings
    About our process
    Feb 11, 2023
    Dr. Ko and his supporting Fellow were the best.
    Jan 12, 2023
    Dr Ko is very thorough. I appreciate his patience in answering my questions and very clear / concise explanations.
    Jan 10, 2023
    I will highly recommend Dr KO . An excellent doctor love him
    Jan 05, 2023
    We had a great initial experience with Dr. Ko. His explanations were clear and concise and his discussion of treatment options was excellent.
    Dec 17, 2022
    Excellent consultation
    Nov 30, 2022
    Dr. Ko of UCSF is one of the best Drs I have ever encountered in my life; he is exceptional in every way and I appreciate his manner and how he regards me. I have come to trust him 100%.
    Nov 10, 2022
    Dr. Ko is the best!
    Oct 08, 2022
    I don't think UCSF has followed through with anything that might have actually helped me. They talk to me but have not done anything to help me.
    Oct 07, 2022
    Very individualistic approach for treatment thorough knowledge of subject clear analysis of problem and realistic approach to treatment with candid explanation of limitations of treatment.Treated with respect and compassion.
    Sep 29, 2022
    Dr Ko really knows how to deal with patients and make them less worried.
    Aug 23, 2022
    Dr Ko was thoroughly familiar with my medical history for this referral/ 2nd opinion meeting. Was both realistic and optimistic and made valuable suggestions regarding possible changes to the treatment scenario currently proposed by our Sutter oncologist. Furthermore he offered future assistance as necessary. We left meeting incredibly thankful that Dr Ko was willing to work with us!!!
    Aug 20, 2022
    Dr. Ko is confident and easily understood. He was a realist but also provided some hope.
    Aug 11, 2022
    All good
    Aug 06, 2022
    Kudos to Dr Ko !! He is intelligent thoughtful and methodical in his approach. He is very kind and listens to my concerns and questions. He spends sufficient time with me and I do not feel rushed during the appointment. He has read my chart before hand so he is familiar with my case and test results. His calm demeanor is appreciated. He communicates well and explains the problems and management plan clearly. I have full confidence in Dr Ko and know I am in expert hands.
    Jul 28, 2022
    Very understating and polite
    Jul 10, 2022
    I have been very lucky to have been treated by Dr. Ko for close to six years. He is remarkable caring supportive and vigilant in reviewing tests etc to monitor my so far the successful outcome of my treatment for cancer.
    Jul 08, 2022
    I have seen Dr. Andrew Ko since 2016. Without exception he has always been friendly understand and assuring. In one (critical) case he made an insightful medical decision that other doctors may have overlooked. At a personal level he's very understanding and easy to talk to. I want to share my and my family's appreciating without any reservation.
    Apr 09, 2022
    This was the best consultation I have ever received in or out of my own practice.
    Feb 08, 2022
    Dr. Ko was very concerned and empathetic
    Dec 18, 2021
    Summarized a complex situation well.
    Dec 07, 2021
    I thought we were to call to make appointments. But throughout the 2+ years I have been seeing this specialist provider every 3 months I have never had an easy time making an appointment so from now on I will always ask the medical team to schedule me through the portal.
    Sep 24, 2021
    Dr. Ko was outstanding during this Appt increasing my comfort in being a patient for his research & treatment in future.
    Sep 16, 2021
    All good
    Sep 14, 2021
    Dr Ko is the best!
    Aug 23, 2021
    I found myself wondering about UCSF's successes and failures regarding my type of cancer. I don't expect a sales pitch by any means but hearing about any cases with successes or failures might help me navigate my care. Perhaps a recap of why my cancer occurs and what if any successes UCSF or any other institution has had with treatment would be reassuring or informative. The take away for me is that I wonder if they're throwing in the towel or don't want to have to tell me bad news.
    Aug 20, 2021
    Dr. Ko was very kind and thoughtful. My husband has recently been given a terminal diagnosis and we have been shocked/stunned/frozen. We asked to speak to a physician at UCSF to be sure he was receiving the right kind of care. Dr. Ko listened to us and was helpful and very supportive.
    Aug 18, 2021
    The doctor was very kind and considerate and explained all my options I'm really happy with all of the doctors at your facility they're absolutely the best
    Jul 30, 2021
    Dr Ko is very approachable and has a very comforting demeanor.
    Jul 16, 2021
    My questions and concerns were answered clearly and with compassion.
    Jul 13, 2021
    I felt Dr. Ko was an excellent provider and sincerely concerned and caring.
    Jul 13, 2021
    This was a very complex discussion and visit about my cancer treatment; it was good the provider is excellent but there was not enough time to relative to the importance of this major milestone of results to air or answer all the complexities. The provider did offer to meet/speak again after another referred consult and I hope we do. It's a lot of difficult information to absorb and under heightened emotional conditions so pacing is helpful. Having said that my medical outcome for now was also good
    Jun 18, 2021
    he was tborough and had reviewed my records
    Jun 06, 2021
    I have been under Dr. Ko's care for almost five years now. He has never failed to be caring concerned and supportive throughout. It makes a huge difference to a patient to have such care and I am grateful to Dr. Ko. As I have told him many times.
    May 06, 2021
    Dr. Ko took time to understand my issues.
    Apr 27, 2021
    Dr Ko is very "on top of things" and understand my health situation. I am grateful.
    Apr 26, 2021
    I feel that Dr. Ko is an excellent doctor and has always extended to me the best of care.

    Selected research

    Decorative Caduceus

    A Study of Ivaltinostat Plus Capecitabine or Capecitabine in Metastatic Pancreatic Adenocarcino...

    The percentage of subjects who experience a grade 3 or higher adverse event that qualifies as a DLT


    Decorative Caduceus

    Trial of Ulixertinib in Combination With Hydroxychloroquine in Patients With Advanced Gastroint...

    To assess the efficacy of ulixertinib and hydroxychloroquine in patients with advanced, RAS, non-V600 BRAF, ERK, or MEK mutated gastrointestinal malignancies


    Please check with your health insurance plan regarding coverage for this type of care. Not all providers at UCSF are covered by every insurance plan.