Arbiter

Arbiter is building the AI system that connects healthcare. Its care orchestration platform unifies patients, providers, and payers on a single infrastructure using a Record-Action-Alignment model. The platform builds a longitudinal patient record integrating clinical, financial, and policy data, then uses AI to automate actions and keep stakeholders aligned. First application focuses on real-time site-of-care optimization — matching referrals to best-fit providers based on cost, quality, and availability while automating authorizations, outreach, and scheduling. Founded by Michelle Carnahan, former President of Thirty Madison, with a team from Cigna, UnitedHealth, Kaiser Permanente, One Medical, VillageMD, Meta, Apple, Google, and Amazon.