Skip to Main Content

Jo Chien


Breast oncologist
Medical Director, Breast Medical Oncology

Dr. Jo Chien specializes in caring for patients with breast cancer. She serves as medical director of breast medical oncology at UCSF.

In research, Chien develops new treatments for early and metastatic breast cancer. She serves as principal investigator on numerous trials focused on all breast cancer subtypes, with the goal of tailoring treatment to tumor biology and identifying which patients need more aggressive treatment (and providing targeted treatment options for these patients) and which patients can do well with less intervention.

Chien is also interested in the impact of breast cancer diagnosis and treatment on young women. She started a large registry of young women with breast cancer that serves as a resource for research and support.

Chien earned her undergraduate degree from Stanford University and her medical degree from Harvard Medical School. She completed a residency in internal medicine at Massachusetts General Hospital. At UCSF, she completed a fellowship in hematology and oncology and served as chief fellow before joining the faculty.

Chien has received research funding from the National Institutes of Health, National Cancer Institute, U.S. Department of Defense, American Society of Clinical Oncology, American Cancer Society and California Breast Cancer Research Program, as well as philanthropic support. She has published numerous research articles in medical journals.

  • Education

    Harvard School of Medicine, 2003

  • Residencies

    Massachusetts General Hospital, Internal Medicine, 2006

  • Fellowships

    UCSF, Hematology, 2009

  • Board Certifications

    Medical Oncology, American Board of Internal Medicine

  • Academic Title


  • Languages


Where I see patients (1)

    My reviews


    Overall Experience
    210 Ratings
    About our process
    Feb 24, 2023
    I love the big smile Jo always has on her face as she enters the examining room!
    Feb 02, 2023
    Gold stars for Amy Jo Chien.
    Feb 02, 2023
    Dr. Chien needs more help getting to her appointments on time as infusion is scheduled for me after her appointment. Infusion seems to run 1 to 2 and a half hours late each visit as well. Both departments need help staying on time. Thank you.
    Jan 29, 2023
    When you refer to the care provider - are you talking about the doctor who was helping Dr. Chien? I saw her for most of my appointment. Dr. Chien was delayed. I did not spend much time with her.
    Jan 21, 2023
    Dr Chien listened to me and also gave me a good prognosis wespecially coming after the poor one given to me by my first oncologist. She in effect gave me my life back.
    Jan 14, 2023
    AVS has no information. Given the name of a cream to use but no record of what it is and told it would be in the after visit summary. Also needed details on dosage of suggested calcium tablets.
    Jan 11, 2023
    Dr. Jo Chien was awesome!!!! Extremely knowledgeable and caring. Best combination!
    Nov 17, 2022
    Dr. Chien is a gem
    Nov 05, 2022
    I have already recommended the provider several times.
    Nov 02, 2022
    Dr. Chien is great but since she is so willing to take time with each patient she runs behind in her schedule. I was contacted 45 minutes after my scheduled appointment to let me know that she was running behind. I would have found it beneficial to know how many minutes she was running behind at the start of my scheduled appointment time and then to receive an update maybe every 15 minutes?
    Oct 05, 2022
    I'm so thrilled Dr Chien is my doctor.
    Oct 05, 2022
    I ask a lot of questions sometimes I feel they are not directly answered
    Sep 17, 2022
    Dr. Chien is the best. I trust her completely and what more can I ask for? Nothing.
    Sep 17, 2022
    Jo chien is terrific
    Sep 17, 2022
    All of staff are always very a tenniive friendly and nice to me. It is an absolute delight to go to UCSF with cancer clinic for treatment
    Sep 08, 2022
    The care of Dr. Chien and her team gave to the patients are excellent. I can trust their decision and felt at ease
    Aug 19, 2022
    Dr. Chien has been amazing for my entire cancer journey. She listens she is aware of my feelings and concerns she is willing to discuss options and I cannot imagine what my cancer journey would have been like without her as my doctor.
    Aug 18, 2022
    My time with the provider has never felt rushed even though I know things are often running behind schedule.
    Aug 18, 2022
    I feel fortunate to have Jo Chien as my oncologist!
    Jul 21, 2022
    Dr Chien is always kind. Up to date on everything. Spends as much time as needed. I'm so lucky to have her.
    Jul 13, 2022
    Wish doctor had gone over recommendations with NP prior to my confusing contradictory visit
    Jun 02, 2022
    No communication with team for over a week in spite of them wanting me to get tests.
    Mar 15, 2022
    Dr. Chien is always informative caring and knowledgeable.
    Jan 27, 2022
    Excellent doctor
    Jan 26, 2022
    This was my 'graduation" from the specialty practice and the provider asked me to stay in touch and showed great warmth and caring.
    Jan 05, 2022
    Thank you for taking time with me on my first appointment with you to answer all of my questions. I appreciated that and you.
    Oct 21, 2021
    It was obvious she did not read the file before. She was briefed by the resident. Even though she seems very competent this casts some shadows.
    Sep 30, 2021
    It was a good visit that provided me with info about my first chemo treatment. They followed up with my questions and concerns took time to listen and prepped me of possible side effects to be aware of.
    Jul 15, 2021
    Dr Chien is the best there is! I trust her with my life! So thoughtful and caring and spends the time needed.
    Jun 25, 2021
    I felt very confident that Dr. Chien was skilled in her field. I left her office feeling I could trust her.
    May 20, 2021
    UCSF is #1 in my book!
    Apr 24, 2021
    I saw a nurse rather than the Doctor listed.she was excellent