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John W. Park


Oncologist and breast cancer specialist

Dr. John W. Park is an oncologist who specializes in breast cancer treatment and research.

In his laboratory, Park works to develop novel technologies for studying and treating cancer. His research includes investigating new forms of immunotherapy such as immunoliposomes (antibodies paired with vesicles similar to human cell membranes) and vaccines that target cancer cells. He also conducts clinical trials of new cancer treatments.

Park has been a visiting scientist at Genentech, where he performed research on HER2/neu, a protein produced in excessive amounts by some breast cancer cells, and Herceptin, a new treatment that acts as an antibody to HER2/neu.

  • Education

    Stanford University School of Medicine, MD, 1986

  • Residencies

    UCLA, Internal Medicine, 1989

  • Fellowships

    UCSF, Hematology, 1992

    UCSF, Medical Oncology, 1992

  • Board Certifications

    Medical Oncology, American Board of Internal Medicine

    Internal Medicine, American Board of Internal Medicine

  • Academic Title


Where I see patients (1)

    My reviews


    Overall Experience
    292 Ratings
    About our process
    Nov 25, 2023
    Always seem to wait a half hour after appt time to for dr to come into exam room
    Oct 30, 2023
    Responds quickly and provides detailed explanations to assist with understanding
    Oct 11, 2023
    Excellent care provider
    Oct 04, 2023
    Dr Park is a very good & responsible doctor he listened & explained to me with detail info.
    Sep 26, 2023
    Dr. Park does a great job of listening and then addressing the issue. He is friendly and very easy to talk to.
    Sep 21, 2023
    Definitely Dr Park is one of best knowledgeable oncologist with experience in the medical field.
    Sep 21, 2023
    Dr. Park has been fabulous throughout my treatment plan. I'm so appreciative of his vast knowledge expertise and caring demeanour.
    Sep 15, 2023
    Dr Park was very patient and provided pertinent information about my case. Excellent
    Sep 07, 2023
    He always listens and answers my questions appropriately. I always leave our meetings feeling better about my condition.
    Aug 30, 2023
    Dr Park is as much teacher as clinician. I know just enough to have tons of questions. Dr. Park inspires confidence helps you understand what is happening and what your options are. He really listens.
    Aug 30, 2023
    Dr Park listened in my concerns and was very helpful in discussing optional treatments. He took his time with me & answered all my questions. Excellent caring doctor.
    Aug 03, 2023
    Dr. Park has a relaxed demeanor which puts patients at ease - at least me
    Jul 21, 2023
    Dr. Park has excellent knowledge about breast cancer and he takes time to explain In a detailed fashion what my options are for future treatments.
    Jun 10, 2023
    I've already recommended this care provider to others. He understood my desire to be able to continue to perform in coral concerts. He even knew the concert piece I just performed in before I started my cancer meds
    Jun 07, 2023
    Dr Park is excellent and I have referred him to others.
    May 31, 2023
    Dr John Park is great!!
    May 20, 2023
    Dr. John Park is amazing he is very focused and prepared makes you feel comfortable about asking questions.
    May 19, 2023
    If I could give Dr. Park a higher score I would. He showed great care and concern for me clearly explained the why of things as well as how they work and addressed all of my concerns. I am very grateful.
    May 05, 2023
    Dr. John Park was very professional knowledgeable thorough and he took the time to discuss my health in detail. I would highly recommend him.
    May 03, 2023
    I am so fortunate to have Dr Park's knowledge and compassion on a yearly basis so long after my initial diagnosis .
    Apr 26, 2023
    I love the care I received and the vibe at the clinic.
    Mar 09, 2023
    Dr. Parks was wonderful very personable patient and understanding.
    Mar 05, 2023
    Dr. Park has a sense of humour which I appreciate.
    Feb 28, 2023
    I woukd recommend Dr Park in a heartbeat. His knowledge insights and experience have helped me greatly iny journey post malignant Phyllodes tumor removal. I became aware of him after the surgery but I feel very confidence with him as my choice of oncologist post surgery as I mark 2.5 yrs cancer free.
    Feb 23, 2023
    Excellent experience. Very caring.
    Jan 30, 2023
    Excellent doctor
    Jan 25, 2023
    He really cares and never mashed me feel rushed. Very thorough and informative
    Dec 09, 2022
    Dr. Park is professional courteous and has excellent communication skills. He listens intently and addresses all questions and concerns. Dr. Park is an asset to UCSF.
    Dec 04, 2022
    Dr Park was supportive provided clear and understandable guidance. Thank you
    Oct 27, 2022
    I am so relieved to find a good doctor take explains and listen to. For the first time since diagnosis I feel safe in good hands.
    Oct 25, 2022
    Dr. Park was on top of all options and continuation of program in place. Well prepared.
    Oct 09, 2022
    Dr. Park was exceptionally knowledgeable and articulated every thing I needed to know.
    Oct 01, 2022
    Thank to Dr Park for his medical knowledge and experience in prescribing a medical treatment that has worked well with the cancer .
    Oct 01, 2022
    Dr. Park is a science rock star! His knowledge and experience and research make me feel like I am in the best hands possible.
    Sep 28, 2022
    Dr. John Park is a very good and knowledgeable doctor!
    Sep 09, 2022
    Sep 07, 2022
    During this pre-infusion appointment I don't recall any specific discussions regarding proposed treatment that would require my input. But that certainly has been the case in prior conversations.
    Aug 26, 2022
    He should be working in research rather than interfacing with patients.
    May 18, 2022
    Dr. Park described my bodys anatomy breast density And future expectations of what I may experience. All good
    May 07, 2022
    I'm scared
    Apr 20, 2022
    Very thorough
    Apr 02, 2022
    He threw me to yet another person I don't know
    Mar 11, 2022
    This visit was for a second opinion on a condition. The Progress Notes summarized all and provided helpful treatment information.
    Feb 08, 2022
    Dr Park is a brilliant doctor but lacks a good "bedside manner " Has a difficult time relating to patients on a personal level.