Portrait of John W. Park
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John W. Park, MD

Medical Oncology (Breast)
Breast Cancer Mission Bay
415-353-7070
Portrait of John W. Park
Portrait of John W. Park
ucsf logo

John W. Park, MD

Medical Oncology (Breast)
Breast Cancer Mission Bay
415-353-7070

On this page

About me

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 & training

Board certification

  • Medical Oncology, American Board of Internal Med/Medical Oncology
  • Internal Medicine, American Board of Internal Medicine

Fellowship

  • Hematology - Oncology, UCSF School of Medicine -GME

Residency

  • Internal Medicine, University of California at Los Angeles GME

Internship

  • Internal Medicine, University of California at Los Angeles GME

Degree

  • MD, Stanford University School of Medicine

Academic title

  • Clinical Professor

My expertise

Locations

    Reviews

    Average rating

    4.9
    4.9 out of 5 Stars
    259 ratings
    About provider reviews

    Showing 1-6 of 84 reviews

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    • 4.7 out of 5 Stars
      August 21, 2026

      Very efficient.

    • 4.9 out of 5 Stars
      July 31, 2026

      I really appreciate when a doctor puts medical decisions into context. For example, when discussing removing my IUD during this process, he said it's at the bottom of the list of priorities, which was helpful because I was stressed about removing it right away.I also am not interested in every detail of the pathology of my disease. As a patient, I want to know my prognosis, confidence in the treatment plan, and like the head of long-term side effects. When I asked Dr. Park how he felt about these things directly, he was able to give me a straight answer. I was able to walk away from the appointment feeling so much better because I could see my condition and treatment from a bird's eye view.

    • 5 out of 5 Stars
      June 17, 2026

      Excellent Svc. For me. Kept me calm, informed and comfortable. Thank you for such a wonderful thoughtful group ,

    • 5 out of 5 Stars
      June 2, 2026

      Dr John Park is truly incredible!

    • 5 out of 5 Stars
      May 9, 2026

      Dr Park left my medical prescriptions up to me,He was factual, observant and excellent care ensued

    • 5 out of 5 Stars
      April 22, 2026

      Dr. Park spent a lot of time going over all the questions I had and answered them thoughtfully and fully. His expertise and knowledge gives me confidence I am getting the best advice and care.

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