Tethys was founded as a Managed Transplant Program, to manage the risk associated with organ and bone marrow transplants while optimizing patient outcomes. Over time, Tethys adapted our expertise in care management, claims processing/auditing, advocacy, reinsurance, provider negotiation, and eligibility management, developed for this program to include a broad portfolio of products including Medical Stop Loss, Employer Transplant, Leased Networks and Social Security Advocacy. Every Tethys client has access to our full Risk Management Suite of Services.