Breast Care at Greenbrae
UCSF Breast Care at Greenbrae is part of the UCSF Helen Diller Comprehensive Cancer Center. It provides screening for early breast cancer detection; effective, less toxic treatments for breast cancer; and specialized care for patients at high risk for breast cancer. Patients are treated by Dr. Cheryl Ewing, Marin County's most experienced breast surgeon, who helped develop two breast procedures, a lumpectomy with partial breast reconstruction and a nipple-sparing mastectomy. Ewing has 20 years of experience and performs more than 250 breast surgeries a year.
The center treats you as a whole person, supporting both your physical and emotional well-being. We provide a wide range of patient services that include individual counseling as well as support groups for patients and their families.
U.S. News rankings
Best hospital in Northern California
Best in Northern California in cancer care
Accreditations & memberships
National Cancer Institute
The National Cancer Institute has designated UCSF a comprehensive cancer center, its highest ranking. This designation is awarded to centers that demonstrate scientific excellence and the ability to conduct cancer research across many disciplines.
Commission on Cancer
UCSF's cancer programs have been accredited by the American College of Surgeons' Commission on Cancer (CoC) since 1933. The CoC is a consortium of groups dedicated to improving cancer patients' survival and quality of life via research, education and better medical care.
National Comprehensive Cancer Network
UCSF is a founding member of the National Comprehensive Cancer Network, an alliance of the world’s top cancer centers. The network brings together leaders in treatment and research to improve the quality, effectiveness and efficiency of cancer care.
Plan your visit
What to Bring
- Photo I.D.
- Health insurance card
- Insurance authorization, if required
- Doctor's referral, if required
- Recent test results related to your condition
- List of your medications, including dosages, plus any you're allergic to
- List of questions you may have
- Device or paper for taking notes
Our research initiatives
Athena Breast Health Network
The Athena Breast Health Network, a collaborative organization that includes UCSF, promotes data sharing to help all partners deliver more effective and personalized care to patients with breast cancer.
UCSF Helen Diller Family Comprehensive Cancer Center Research
UCSF is home to a range of research initiatives aimed at improving outcomes for cancer patients everywhere. This includes research on topics such as immunotherapy, BRCA mutations and molecular diagnostic testing.