Arkansas Oncology Associates is a medical center that provides a range of health care services. It is located in North Little Rock, Ark. Arkansas Oncology Associates is a part of US Oncology, which is one of the leading health care service networks engaged in cancer treatment and research in the United States. It operates more than 90 cancer centers and radiation facilities in over 35 U.S. states. The organization provides radiation therapy and diagnostic imaging, pharmaceutical management, clinical research, laboratory and patient education services. Its research services include study initiation and education, project and data management, training, and research newsletters and publications. US Oncology maintains a network of more than 850 physicians in over 450 locations.