Founded in 1990, Viant Inc. provides health care payment solutions through primary, complementary and integrated networks, contract management, non-network cost management services, post payment audit and recovery services. It provides services to the commercial as well as public health insurance sectors of the United States. Based in Naperville, Ill., the company offers network, network management, pre-payment and post-payment services. Viant Inc. is affiliated with the Americas Health Insurance Plans (AHIP), The American Association of Preferred Provider Organizations (AAPPO) and The Self- Insurance Institute of America Inc. (SIIA). The company was formerly known as Concentra Network Services.