Concerning material changes to the operations and governance structure of participants in the health care marketplace.

HB 1881 requires health care entities to notify Washington’s attorney general and health care authority about major mergers, acquisitions, or contracting affiliations that could impact competition or access to care. It mandates review of these transactions to ensure they maintain or improve access to emergency, primary, reproductive, end-of-life, and gender-affirming care - specifically addressing concerns that past deals reduced access to these services. The bill supplements federal antitrust laws by covering transactions below federal reporting thresholds and giving state agencies tools to investigate potential anticompetitive harm. It directly affects health care providers, insurers, and hospital systems entering significant ownership changes. The law aims to prevent price hikes and limited provider choices, particularly in rural areas, while protecting access to medically necessary care for vulnerable communities.