About Us

About RAS Radiation Oncology Centers

RAS' Radiation Oncology Centers -- known as The ROC -- have been providing radiation oncology services, the use of precisely delivered radiation to treat malignant (cancerous) and benign (non-cancerous) disease, to the greater Sacramento area and Northern California for more than 90 years. With its long-standing history of excellence and innovation in radiation oncology, The ROC has played a critical role in delivering state-of-the-art cancer treatment to this region. This reputation extends well beyond Northern California. Our medical, professional and support staff excel in comprehensive treatments using state-of-the-art technology within a caring and supportive environment including intensity-modulated radiation therapy (IMRT), image-guided radiation therapy (IGRT), stereotactic body radiation therapy (SBRT), brachytherapy, seed implants, intraoperative radio therapy (IORT), and Gamma Knife. Healthcare providers from all over the U.S. work closely with ROC physicians and staff on innovative treatment aids, procedures, and techniques.