Founded in 1990, IMPAC Medical Systems is a company that provides health-related information technology solutions. Headquartered in Sunnyvale, Calif., it maintains offices throughout the United States. The company provides medical and radiation oncology and pathology treatment solutions to prevent cancer. With a location in Henderson, Nev., IMPAC Medical Systems offers practice management, cancer registration and consulting services. It also provides account and project management, documentation, configuration, technical and operations services. The company is a wholly owned subsidiary of the Elekta Group, which maintains locations worldwide. The parent company has a staff of more than 2,500 employees, including oncologists, radiation therapists and neurosurgeons.