Dr. Sandler serves as the Chair of Radiation Oncology at Cedars-Sinai Medical Center with affiliation at the Samuel Oschin Comprehensive Cancer Institute at Cedars-Sinai Medical Center. He is also the principal investigator for the National Radiation Therapy Oncology Group, focusing on radiology and chemotherapy for prostate cancer. Working with the National Institute of Health, Dr. Sandler has been involved in the investigation of innovative radiation strategies targeting prostate cancer and evaluating quality of life of prostate cancer patients following surgery and radiation therapy.