National Health Insurance Administration Co. “NatHealth” was established in 1997 as a third party administration (TPA) company to manage health insurance policies; corporate self-funded health plans and other employee benefits. NatHealth is a full-service TPA exhibiting a competitive edge in technology with a history of delivering the highest quality of service through its dedicated team of customer care specialists and benefit advisors. NatHealth offers a full array of integrated services designed to provide our clients with the highest standard of quality and savings in claims administration and management of benefit plans.