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Penny K. Sneed


Radiation oncologist
Co-director, Gamma Knife Radiosurgery Program

Dr. Penny K. Sneed is a radiation oncologist and co-director of the Gamma Knife and CyberKnife Radiosurgery Program. She specializes in treating brain tumors and breast cancer. Her research seeks new treatments for these conditions, specifically using the Gamma Knife, a tool that delivers high doses of radiation to distinct targets.

Sneed has received numerous awards, including fellowship in the American College of Radiology. She earned her medical degree at Stanford University and completed a residency in radiation oncology at UCSF.

  • Education

    Stanford University School of Medicine, 1981

  • Residencies

    UCSF Medical Center, Radiation Oncology, 1986

  • Board Certifications

    Interventional Radiology and Diagnostic Radiology, American Board of Radiology

  • Academic Title


Clinics I work with

Brain Tumor Center

400 Parnassus Ave., Eighth Floor
San Francisco, CA 94143

Radiation Oncology Program

See all three of our San Francisco locations.

My reviews


Overall Experience
46 Ratings
About our process
Dec 01, 2023
I always find Dr. Sneed to be very open about explanations of my treatment. She is kind personable knowledgeable and responsive. She and her staff are extraordinary in that regard.
Nov 09, 2023
Having no questions of Dr Sneed is a measure of effectiveness in communication.
Aug 31, 2023
Dr. Sneed provided detailed instructions and information on my upcoming gamma knife. She is so knowledgeable and professional. She answered all my questions and worries. I feel confident that she will provide excellent service to me.
Aug 17, 2023
Very thorough and professional in explaining the process and responding to my questions.
Jul 22, 2023
Dr. Sneed is fantastic. I don't know that I've ever had a doctor who was such an excellent listener and clear communicator.
Jun 21, 2023
Very good
Apr 14, 2023
Dr. Sneed is excellent!
Apr 05, 2023
I can't thank Dr. Sneed enough for her friendliness knowledge professionalism and caring. I was very frightened about my diagnosis and she immediately put me at ease.
Mar 22, 2023
Dr. Sneed is amazing and truly one of a kind. I always feel heard and am fortunate to have her on my team.
Nov 24, 2022
Dr. Sneed is one of the best doctor. She is so detailed thorough and professional. She provides guidance and knowledge to all my issues and concerns. I would not have lasted this long without her expertise. She is an excellent doctor.