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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 Program

See all three of our San Francisco locations.

My reviews


Overall Experience
190 Ratings
About our process
Jul 07, 2023
They did not allow very much for me to get my words in edgewise - the whole discussion last about 4-5 minutes
Jul 06, 2023
Appointment seemed rushed. Primarily Dr. Roach explained his proposed treatment with scant time for indepth questions. This may be due to the second opinion aspect of the appointment.
May 13, 2023
I think I am a pretty well educated person but sometimes the doctor went too fast for me to take it all in.
Apr 16, 2023
Excellent from start to now
Apr 12, 2023
Dr. Roach is a very personable Doctor and explained all the options of treatment. I trust him very much.
Apr 11, 2023
No one has followed up. I do not know if they have all the medical information they need.
Apr 04, 2023
I am extremely happy with the care provided by ucsf
Mar 19, 2023
Wonderful cc caring doctor and staffs
Mar 19, 2023
Mar 15, 2023
The doctor was good and it was helpful that I had my daughter to help me as she took some notes about what was discussed
Feb 02, 2023
It's such a pleasure and so reassuring to be in the hands of such a distinguished specialist. A patient couldn't ask for more.
Dec 19, 2022
Dec 17, 2022
Pleasures Communicating With Dr Roach
Nov 22, 2022
While the terminology was new the doctors were patient and detailed what they were. Thanks
Nov 08, 2022
Would be ideal to have Dr. Roach and his office schedule and track all items relating to my prostate cancer follow up. Currently my general practitioner has taken this role.
Oct 16, 2022
We'll satisfied with Dr. Roach
Oct 10, 2022
Sep 30, 2022
Dr. Mack Roach maintains his five stars!
Sep 18, 2022
Dr.Roach was precise helpful thorough. . A truly great doctor and great experience.
Sep 05, 2022
Could have emailed the diagnosis and recommended treatment. He has one plan for all patients.
Aug 29, 2022
Dr Roach is great! I really like his honesty and directness
Aug 28, 2022
The doctor was distracted tiring over most of the appointment to his intern who was professional courteous and helpful unlike him.
Aug 15, 2022
Dr. Mack Roach has treated me kindly and successfully for many years...
Jul 19, 2022
Dr Roach gives the impression there is only one option available and is very confident in his assessment.He uses lots of studies to illustrate his recommendations including treatments that are not currently available
Jun 16, 2022
I've never experienced so much kindness courtesy and friendliness anywhere other than at UCSF. Whoever's running the show Kudo's
Apr 26, 2022
I felt educated about my own health and what's available for treatment
Apr 18, 2022
Great professional; he Is caring analytical and easy to talk with. I feel honored to have him take me on as a patient.
Jan 04, 2022
Mack is the BEST
Nov 23, 2021
Overall experience with my video visit with Dr. Roach was excellent. He was extremely knowledgeable understanding honest patient explained my illness and treatment very effectively and took the time to listen to me and answer my questions to my satisfaction. Outstanding clinician. Thank you.
Nov 09, 2021
Great care team.
Oct 20, 2021
Very thorough and comforting in their responses.
Oct 20, 2021
Resident was not 100% clear about my instruction but after visit summary and a message quickly cleared it up.

Selected research