Portrait of Mark M. Moasser
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Mark M. Moasser, MD

Breast Medical Oncology
Breast Cancer Mission Bay
415-353-7070
Portrait of Mark M. Moasser
Portrait of Mark M. Moasser
ucsf logo

Mark M. Moasser, MD

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

On this page

About me

Dr. Mark Moasser is a medical oncologist specializing in breast cancer treatment and research. In the laboratory, he works to develop more effective therapies for breast cancer and designs clinical trials (studies to evaluate potential therapies) that he then brings to the clinic.

Moasser earned his medical degree from Tufts University School of Medicine. He completed his residency and fellowship training at New York–Presbyterian Hospital and Memorial Sloan Kettering Cancer Center.

Moasser has published his work in numerous scientific journals. He regularly presents his research findings at scientific meetings.

Education & training

Board certification

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

Fellowship

  • Memorial Sloan-Kettering Cancer Center

Residency

  • New York Hospital

Internship

  • New York Hospital

Degree

  • MD, Tufts University School of Medicine

My expertise

Locations

    Reviews

    Average rating

    4.9
    4.9 out of 5 Stars
    132 ratings
    About provider reviews

    Showing 1-6 of 21 reviews

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    • 5 out of 5 Stars
      December 9, 2025

      Compassionate, expert and professional care

    • 4.8 out of 5 Stars
      November 12, 2025

      I love how straightforward, data driven and confident Dr Moasser is when explaining things to me and giving me my treatment options and recommendations. He also through his confidence makes me feel hope, which is hard to feel when going through cancer treatment.

    • 5 out of 5 Stars
      October 21, 2025

      Dr. Moasser's reliability, knowledge, promptness and ability to listen to a pt's concerns makes him an outstanding care provider.

    • 5 out of 5 Stars
      October 8, 2025

      Dr Moasser is amazing. Always comes in prepared and up to date on me. Always appreciate his help

    • 4.9 out of 5 Stars
      September 23, 2025

      Very good of pointing out my cancer journey

    • 5 out of 5 Stars
      September 18, 2025

      Dr was a few mins early which was great. Came well prepared and was friendly and helpful.

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