Each membership category has specific benefits and services. For details on each membership category, including membership requirements, costs and benefits, please choose the category you are interested in and click the appropriate link below:

• Active -- Available to board-certified radiation oncologists and physicists both domestic and international.
• Allied -- For radiation oncologists who are not board-certified.
• Affiliate -- For physicians who are not radiation oncologists.
• International -- Available to radiation oncologists and physicians living outside the United States.
• Associate -- For physicists, dosimetrists, radiation therapists, techs, etc.
• Associate/Nurse -- Available to radiation oncology nurses.
• Corresponding -- Available to physicists, dosimetrists, radiation therapists, techs, etc., based outside the United States.
• Member-in-Training -- For radiation oncologists currently in residency in the U.S.
• International Member-in-Training -- For radiation oncology residents outside the U.S.
• Emeritus -- Limited to retired, non-practicing members.
• Honorary -- Chosen annually by the ASTRO Board of Directors, cannot be eligible for Active membership.