Sean Maroongroge, MD

Sean Maroongroge, M.D., M.B.A., is a board-certified radiation oncologist and assistant clinical professor at City of Hope’s Duarte and Glendale campuses, where he is involved in many stages of patient care, from tumor detection through treatment and survivorship. He is an expert in treating head and neck, skin, prostate, and breast cancer, among others, and works closely with his patients to find the best solution for their individual needs. Dr. Maroongroge also has a special interest in the use of ultra-low dose radiation for non-cancer indications like osteoarthritis. Dr. Maroongroge received his medical degree and master’s in business administration from Yale University. He completed his internship at St. Joseph Mercy Hospital Ann Arbor and subsequent training in radiation oncology at MD Anderson Cancer Center. There, he was awarded special recognition for the compassionate care that he delivered to patients. In his clinical practice, Dr. Maroongroge is a proponent of focused radiation treatments to provide disease control and symptom palliation while placing special emphasis on maintaining a patient’s quality of life while controlling the disease. He is highly regarded for utilizing a wide range of techniques that allow him to minimize radiation dose to nearby healthy structures, including Stereotactic Body Radiation Therapy (SBRT), Image-Guided Radiation Therapy (IGRT), Volumetric Modulated Arc Therapy (VMAT), and Brachytherapy. He has applied his background in business administration and certification in medical quality management from the American Board of Medical Quality to lead initiatives to improve access to care and study how technology can best be incorporated to deliver consistently high-quality treatments. His research contributions include numerous peer-reviewed articles and presentations on radiation oncology. Dr. Maroongroge grew up minutes away from City of Hope’s Duarte campus and is honored to serve the Southern California community that he calls home. Outside of the clinic, he enjoys rock climbing and running, exploring new restaurants, and following the NFL and NBA through fantasy sports.