The Health Data Access, Transparency, and Affordability Act of 2026, known as the Health DATA Act, aims to enhance transparency in group health plans, prevent discrimination based on health data, and improve the management of health plan data. The legislation is designed to ensure that group health plans can effectively audit and access necessary information while safeguarding individual privacy. Key provisions include granting group health plans the right to audit contracts with service providers, such as healthcare providers and third-party administrators.