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Jo Chien, M.D.

Breast cancer specialist

Dr. A. Jo Chien specializes in breast cancer, with special expertise in tumors that are called HER2+ (human epidermal growth factor receptor 2), typically a more aggressive type of cancer. Her primary research interests include HER2+, breast cancer in young women, and fertility problems related to cancer treatment.

Chien graduated from Harvard Medical School in 2003 and completed a residency in internal medicine at Massachusetts General Hospital in Boston. She was a fellow in the hematology and oncology at UCSF from 2006 to 2009. Chien received the Massachusetts Medical Society and Alliance Charitable Foundation International Health Grant in 2003, American Society of Clinical Oncology (ASCO) Young Investigator Award in 2008; ASCO Foundation Merit Award in 2008; and American Cancer Society Postdoctoral Fellowship in 2008. She has published numerous articles in medical journals related to her breast cancer research. Chien is a member of the American Society of Clinical Oncology and the American Association of Cancer Research. She is an assistant professor of medicine at UCSF.


Carol Franc Buck Breast Care Center
1600 Divisadero St., Second Floor
San Francisco, CA 94115
Phone: (415) 353-7070
Surgery Fax: (415) 353-7050
Oncology Fax: (415) 353-7692

Hours: Monday to Friday
8 a.m. – 5 p.m.

Conditions & Treatments

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Harvard School of Medicine 2003


Massachusetts General Hospital, Internal Medicine 2006


Massachusetts General Hospital, Hematology 2009

Selected Research and Publications

  1. Chien AJ, Duralde E, Hwang R, Tsung K, Kao CN, Rugo HS, Melisko ME, Esserman LJ, Munster PN, Cedars M, Kerlikowske K, McCulloch CE, Rosen MP. Association of tamoxifen use and ovarian function in patients with invasive or pre-invasive breast cancer. Breast Cancer Res Treat. 2015 Aug; 153(1):173-81.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.