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Rajni Sethi, M.D.

Radiation cancer specialist

Dr. Rajni A. Sethi is a radiation oncologist who treats patients with breast and gynecologic cancer. She specializes in the use of radiation treatments such as intensity-modulated radiation therapy (IMRT), stereotactic radiosurgery, stereotactic body radiotherapy, intraoperative radiation therapy (IORT), brachytherapy and hyperthermia.

In her research, she is interested in developing treatments to combine targeted biologic agents with radiotherapy as a form of personalized radiotherapy for women with breast cancer and gynecologic malignancies. She has studied the use of advanced radiotherapy with alternative patient positioning and treatment schedules to optimize radiation delivery, reduce side effects and improve the patient experience. Sethi earned a medical degree at UC San Diego School of Medicine and completed a residency in radiation oncology at New York University. She is an assistant adjunct professor of clinical radiation oncology 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.

Radiation Oncology at Mount Zion
1600 Divisadero St., Basement Level
San Francisco, CA 94143-1708
Main Phone: (415) 353-7175
New Patient Appointments: (415) 353-9807
Fax: (415) 353-9884

Hours: Monday to Friday
7 a.m. – 6 p.m.

Conditions & Treatments

More about Rajni Sethi


University of California San Diego School of Medicine 2007


New York University Medical Center, Radiation Oncology 2012