Back to search results
Katy K. Tsai
4.9 out of 5 (237)
Katy K. Tsai

Katy K. Tsai, MD

Cutaneous (Skin) Medical Oncology

Cancer Immunotherapy Toxicity Evaluation (CITE) Program
1825 Fourth St.,
San Francisco, CA 94158
+1 more location
(415) 353-9900
4.9 out of 5 (237)
Virtual visits available
4.9 out of 5 (237)
Virtual visits available
Cancer Immunotherapy Toxicity Evaluation (CITE) Program
1825 Fourth St.,
San Francisco, CA 94158
+1 more location
(415) 353-9900

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.

  • Fellowships

    UCSF, Oncology

  • Residencies

    University of North Carolina Schl of Medicine GME, Internal Medicine

  • Internship

    University of North Carolina Schl of Medicine GME, Internal Medicine

  • Degree

    MD, Brown University

Where I see patients (2)

    My reviews

    4.9

    Overall Experience
    237 Ratings
    About our process
    Aug 22, 2025
    Exceptional doctor.
    Aug 22, 2025
    UCSF makes me feel they truly care.
    Aug 12, 2025
    Dr. Tsai is very pleasant. She was professional and explained my issue and as we agreed got an opinion of another physician and promptly messaged me with the results of that discussion. When I messaged Dr. Tsai she answered me the next day. I am confident in her as my physician.
    Jul 29, 2025
    I feel so very fortunate to have Dr. Tsai as my doctor. Just having her as my doctor makes me feel so much safer going through this cancer journey,
    Jul 15, 2025
    Dr. Tsai and her team were excellent. They did an incredible job answering all my questions and taking care to make sure I was involved in decisions about my care.
    Jul 02, 2025
    Thoughtful, honest, informative and goal directed
    Jun 12, 2025
    Outstanding
    May 22, 2025
    Dr. Tsai was interested in my past experiences with MD Anderson, communicated with care in ways that involved me in the plan for my health, and came across as deeply expert in the field while also holding space for my questions and concerns.
    May 22, 2025
    The doctor was very caring and very knowledgeable.
    May 13, 2025
    It's awesome when your so sick that you have someone you can turn to that understands and cares and knowledgeable
    May 09, 2025
    I just learned of metastatic melanoma, and I had a treatment plan that needed to be pivoted and Dr. TSAI patiently shared her experience
    Apr 18, 2025
    Dr Tsai is an excellent oncologist. She is a great listener and has patiently clarified my questions with easy to understand answers.
    Mar 03, 2025
    Spoke clearly and I understood treatment she listened and then answered felt comfortable and I could tell she cared
    Feb 16, 2025
    Good dialog and support for all inquiries. Very helpful, empathetic and thorough.
    Jan 18, 2025
    Dr. Tsai was wonderful. I have complete trust in her and her expertise. Very caring and did not rush me even though she was running late. She patiently answered all my questions and concerns.
    Jan 13, 2025
    Dr. Tsai was exceptional. She was very thorough in her explanations and patient with our questions.
    Jan 09, 2025
    Very personable and professional. Listened to my concerns and addressed them. Competent!....VERY!
    Dec 17, 2024
    I would recommend Dr Tsai to anyone needing a cardiologist. She has been a huge asset to us through this process Thank you to Dr Tsai and her staff
    Dec 06, 2024
    Dr. Tsai has been a warm and wonderful support system! So glad she has been my dr.!
    Dec 06, 2024
    Dr Tsai is the best!!!
    Nov 21, 2024
    Dr. Tsai is always very well prepared, and is always helpful in answering any questions I have during our visits.
    Nov 17, 2024
    Katy's awesome.
    Oct 24, 2024
    We are very grateful for UCSF and all the care we have received.
    Sep 23, 2024
    Dr Tsai is exceptionally good in every way.
    Sep 18, 2024
    Would not be alive without them
    Aug 27, 2024
    I considered Dr. Tsai a world class doctor. Her Level of knowledge, compassion, respect is beyond that of most providers. I have the utmost level of appreciation for her and her care of me.
    Aug 25, 2024
    Dr. Tsai was excellent as always.
    Aug 15, 2024
    Dr. Tsai is an excellent physician and listener. I can not see any aspect of her practice, professionalism, or performance that could be improved. She is also brilliant, understanding quickly the details and complications, and then communicating the larger picture with its implications to the patient.
    Aug 04, 2024
    Dr. Tsai was excellent, taking plenty of time to discuss my situation, answering questions, and clearly explaining further treatment options and next steps. I appreciated the clarity of our discussion and the fact that she didn't offer her recommendations for further treatment until she had a pretty good idea of our reaction to the information we discussed. Consequently we didn't feel pressured to agree with her recommendation but felt that we arrived at it together with her. She is excellent!
    Jun 29, 2024
    Good
    Jun 23, 2024
    Dr. Tsai was very calm, informative and helpful. I couldn't ask for a better experience.
    May 22, 2024
    I'm very pleased with the care and service provided by Dr. Tsai over the course of my treatment under her care.
    May 06, 2024
    Perfect
    May 04, 2024
    Follow up appointment made that same day.
    Apr 19, 2024
    I had taken a break from my Keytruda immunotherapy after a severe side effect that landed me in the hospital for 9 days. Between the CITE program and Dr Tsai I felt confident enough to resume the infusions.
    Apr 09, 2024
    Dr.Tsai has a very welcoming, disarming manner. She is so professionally skilled as well as compassionate, patient, and has a kind way of making sure I hear and understand her. I've seen her over several years and am so thankful that she is the oncologist I was referred to during the initial cancer crisis.
    Mar 29, 2024
    Dr Katy is an excellent listener and explainer
    Mar 12, 2024
    Felt I am receiving excellent care and that my medical and emotional needs matter
    Dec 07, 2023
    Dr Tsai is the best
    Nov 12, 2023
    I have been a patient of Dr. Tsai for over six years. I have complete confidence in her ability to make decisions and recommendations that affect my on-going well being.
    Nov 10, 2023
    I really like my doctor. She cares about me.
    Oct 22, 2023
    The only side effect of my immunotherapy that I have noticed has been irritation of my eyes. Dr. Tsai listened carefully to my description of the treatment I have received for this condition from my ophthalmologist, and then offered to make a referral to a UCSF ophthalmologist who has been studying how immunotherapy may cause side effects in the eyes, which I welcomed.
    Oct 20, 2023
    EVERYONE there, went above and beyond what I'd expect from professionals. I couldn't expect anymore.

    Selected research

    See all research
    Decorative Caduceus

    VO and Nivolumab vs Physician's Choice in Advanced Melanoma That Progressed on Anti-PD-1 & Anti...

    Time from the date of randomization to death due to any cause

    Recruiting

    Decorative Caduceus

    Study of RP1 Monotherapy and RP1 in Combination With Nivolumab

    Percentage of subjects with adverse events (AEs)

    Recruiting

    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

    Recruiting

    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 ...

    Recruiting

    Decorative Caduceus

    Safety and Tolerability Study of GIM-122 in Subjects With Advanced Solid Malignancies

    To identify dose limiting toxicities [DLT] with GIM-122

    Recruiting

    Decorative Caduceus

    Safety and Tolerability Study of GIM-531 in Advanced Solid Tumors

    To assess incidence and severity of AE / SAEs and tolerability assessed by CTCAE grading

    Recruiting

    Contact me

    Share