Arch Insurance Group, a member of Bermuda-based Arch Capital Group, has entered into partnership with Tethys Health Ventures to provide 100% of its medical stop loss administration.

According to Arch, Tethys will provide specialized risk management services for complex medical conditions such as organ and bone marrow transplantation and will provide risk mitigation services through disability advocacy programs for Arch clients and brokers.

Tethys will perform premium collections, claims adjudication and large case management as primary functions and leverage its expertise in managed care administration, risk management, network management, government program eligibility, and medical care management for Arch’s Accident & Health’s clients and brokers.

Arch Accident & Health division is a specialty writer of accident, disability and medical products.

Arch A&H division EVP Richard Richiski said that working with an organization such as Tethys, given their expertise, means that customers and brokers will gain access to proven medical case management support, government program advocacy and strong network relationships to effectively control the costs associated with catastrophic medical events, while optimizing outcomes for insureds.

Tethys Health Ventures CEO and president Tim Koch said in partnership with Arch Insurance Group, Tethys will drive positive outcomes and generate substantial payer savings for policyholders.