Dr. Mack Roach III is a radiation oncologist and an internationally renowned expert on treating and managing prostate cancer.

Roach's research investigates new techniques for treating prostate cancer, such as 3-D conformal radiation therapy, in which the beam is matched to the tumor's shape, sparing healthy tissue, and intensity modulated radiotherapy (IMRT), in which radioactive particles are inserted into the prostate gland, beside the cancer. He also studies such established treatments as brachytherapy. He chaired an important clinical trial comparing strategies for locally advanced prostate cancer.

Roach earned his medical degree at Stanford University School of Medicine.

A global authority on treatment planning for prostate cancer, Roach served as senior author for the American College of Radiology's guidelines on the subject. He is a member of several professional organizations, including the American Society of Clinical Oncology, American Society for Therapeutic Radiology and Oncology, Radiation Therapy Oncology Group, National Cancer Institute's IMRT Working Group and American Joint Commission for Cancer Staging.

  • Education

    Stanford University School of Medicine, 1979

  • Residencies

    Martin Luther King Jr General Hospital, 1981

    Highland General Hospital, 1984

    Stanford University School of Medicine, 1987

  • Fellowships

    UCSF Medical Center, Hematology/Oncology, 1983

  • Board Certifications

    Radiation Oncology, American Board of Radiology

    Medical Oncology, American Board of Internal Medicine

    Internal Medicine, American Board of Internal Medicine

  • Academic Title


Clinics I work with

Genitourinary Medical Oncology Clinic

Bakar Precision Cancer Medicine Building

1825 Fourth St., Sixth Floor
San Francisco, CA 94158

Prostate Cancer Center

Bakar Precision Cancer Medicine Building

1825 Fourth St., Sixth Floor
San Francisco, CA 94158

Radiation Oncology Clinic

See all three of our San Francisco locations.

My reviews


Overall Experience
146 Reviews
I always feel listened to concerns addressed and timely visits.
Explained things in a way that was easy to understand
146 Reviews
Did the doctor pay attention to your concerns
145 Reviews
Gave easy to understand instructions about taking care of health problems or concerns
139 Reviews
Knew the important information about your medical history
143 Reviews
The provider showed respect for what you had to say
142 Reviews
The provider spent enough time with me
141 Reviews