Concerning the relationships between health carriers and contracting providers.

SB 5588 requires health insurance companies (health carriers) in Washington to maintain provider networks with sufficient contracted specialists, including emergency medicine, surgery, and behavioral health emergency services, to ensure enrollees have access to covered care. It establishes a formal process for carriers to request "alternate access" when they cannot contract with enough providers, mandating they prove good faith efforts and ensure no higher costs for enrollees. The bill also bans "all-or-nothing" clauses in provider contracts and requires health carriers to offer fair negotiation opportunities, including providing fee schedules without requiring secure logins. These changes directly affect health insurance companies and the doctors/hospitals they contract with, aiming to improve network adequacy and transparency in healthcare contracts.