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Katy K. Tsai


Oncologist and melanoma specialist

Dr. Katy K. Tsai is a medical oncologist who specializes in treating melanoma and other skin cancers.

In addition to caring for patients, Tsai conducts clinical trials with two of her colleagues in cutaneous oncology, Dr. Adil Daud and Dr. Alain Algazi, seeking new and better therapies for patients with advanced melanoma or head and neck cancers. She also has a long-standing research interest in quality of life and outcomes for patients receiving immunotherapy.

Tsai graduated with a degree in comparative literature from Brown University before earning her medical degree from Brown. She completed a residency in internal medicine at the University of North Carolina at Chapel Hill, followed by a fellowship in medical oncology at UCSF, where she served as chief fellow.

Tsai is a member of the American Society of Clinical Oncology. She was born in Taiwan and raised in Toronto.

  • Education

    Brown University School of Medicine, 2010

  • Residencies

    University of North Carolina School of Medicine, Internal Medicine, 2013

  • Fellowships

    UCSF, Medical Oncology, 2015

  • Board Certifications

    Internal Medicine, American Board of Internal Medicine

    Medical Oncology, American Board of Internal Medicine

  • Academic Title

    Assistant Professor

Where I see patients (2)

    My reviews


    Overall Experience
    191 Ratings
    About our process
    Jun 07, 2023
    This visit was for the purpose of signing a consent form for a proposed drug trial.
    May 19, 2023
    Dr Tsai is a calm and reassuring voice with my health concerns
    Apr 28, 2023
    Excellent doctor
    Apr 14, 2023
    I have seen Dr. Tsai for many years. She is a wonderful patient listener as well as a superb practitioner. She explained and clarified all my concerns about treatment and scheduling. I feel lucky to continue as her patient.
    Apr 13, 2023
    Dr. Tsai reviewed my current status and the need to moved to a new treatment option due to tumor growth. She gave clear descriptions of an open trial as well as information on other possible treatments. She included my son in the discussion and answered our questions.
    Apr 13, 2023
    Friendly encouraging and supportive demeanor was most helpful and appreciated.
    Feb 20, 2023
    Dr. Tsai also listened to my son's questions and concerns. He was attending by phone.
    Jan 10, 2023
    Since Dr. Tsai among many others saved my life I have nothing but gratitude.
    Dec 25, 2022
    Nov 08, 2022
    The care provider is very nice
    Nov 06, 2022
    In my case the physician was friends with the physician who was treating me so I kind of sensed it was awkward for her to vary from what care her colleague and friend was executing ...I cant say that I really learned anything new or shall I say heard any real alternative strategy that could be applied if the present course of care continued to fail. She did mention other drugs that could be used if my next ct shows continued disease progression but it was more simply writing down what they are rather than why anyone might be more successful. I am a biologist-scientist (Human biology with s Ph.D..and I could have understood. What I took from the discussion is no strong position on my care and potential future care...I guess thats what I was looking for.
    Jul 26, 2022
    Dr. Tsai is an excellent person who listens to my questions and she's a great Dr. Too!!!
    May 28, 2022
    Dr Tsai and the staff at UCSF are outstanding. I drive 140 miles one way for these appointments because of their expertise.
    Apr 23, 2022
    Doc didn't seem too concerned about my fears or my time frame.I rather of chose a different approach .
    Apr 18, 2022
    Dr Tsai is an outstanding doctor
    Apr 15, 2022
    Very good
    Apr 02, 2022
    Dr. Tsai always includes whichever of my adult children are acting as my advocate in the conversation and the decision making. This is very important to me and very supportive.
    Jan 03, 2022
    Dr Tsai is an outstanding doctor. I am lucky to have her as my MD
    Dec 04, 2021
    Dr Tsai answered all my questions and followed up with written notes about our visit on My Chart.
    Nov 16, 2021
    Dr. Tsai is very thorough and very professional.
    Nov 03, 2021
    This appointment was an initial "consult" appointment.
    Sep 17, 2021
    Dr.Tsai ordered scans to evaluate changes since I was dropped from the drug trial and to determine what if any treatment options might be of benefit.

    Selected research

    Decorative Caduceus

    A Phase 1B/2 Study of RP1 in Solid Organ Transplant Patients With Advanced Cutaneous Malignanci...

    Assess the safety and tolerability of single-agent RP1 in solid organ transplant patients with cutaneous malignancies by incidence of subjects with treatment-emergent adverse events


    Decorative Caduceus

    Binimetinib and Imatinib for Unresectable Stage III-IV KIT-Mutant Melanoma

    Defined as complete response (CR) or partial response (PR) by Response Evaluation Criteria in Solid Tumors (RECIST v1.1). The ORR at stages 1 and 2 will be estimated using the method of Whitehead, and the p-values for testing the ...


    Decorative Caduceus

    CAB-ROR2-ADC Safety and Efficacy Study in Patients With TNBC or Head & Neck Cancer (Ph1) and NS...

    Assess dose limiting toxicity as defined in the protocol


    Decorative Caduceus

    Safety and Tolerability of ABM-1310 in Patients With Advanced Solid Tumors

    Determine Maximum Tolerated Dose (MTD) and/or Recommended Phase 2 Dose (RP2D) as a monotherapy and in combination therapy in Part A and Part B


    Decorative Caduceus

    Study of RP1 Monotherapy and RP1 in Combination With Nivolumab

    Percentage of subjects with adverse events (AEs)