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Ruth Williamson, MD

Radiation Oncologist

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Conditions Treated Laryngeal Cancer Lung Cancer Ovarian Cancer Pericardial Mesothelioma Peritoneal Mesothelioma Pleural Mesothelioma Testicular Mesothelioma

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specialties & services

  • Bio & Insurance Information

    Dr. Ruth Williamson is a board-certified radiation oncologist based in Pasadena, California. She graduated from the Keck School of Medicine of USC and then did her internship at the VA Long Beach Healthcare System. She pursued her Radiation Oncology residency at the University of Southern California –LAC+USC Medical Center. Dr. Williamson has been practicing for more than 20 years and has treated patients with cancer using radiation therapy. At present, she is affiliated with the Huntington Memorial Hospital.

  • Education & Training


    Keck of USC

    Medical School


    VA Long Beach Healthcare System



    University of Southern California - LAC+USC Medical Center


  • Board Certifications

    American Board of Radiology - Radiation Oncology

  • Hospital & Practice

    Huntington Hospital

    Languages: English/Spanish

    (626) 397-5000

    100 W California Blvd

    Pasadena, California 91105

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