outsourced administrative systems (oasys) - is a health care information services company that provides a comprehensive suite of outsourced administrative and technology services to health plans. the company uses web-based applications, data warehousing, imaging and automated transaction processing technologies to enable customers to reduce administrative costs and capital expenditures while improving administrative quality and customer services in all aspects of health care administration. customers include insurance companies, integrated delivery systems, hmo's, federal and state health programs and other health care organizations.