We've built healthcare unicorns. Now we're building the system they all should've run on.

Our Mission

We didn't set out to build another point solution.

We've lived the problem - as operators, investors, clinicians, and technologists across some of the most complex corners of healthcare. We've built and backed billion-dollar health companies. We've run national provider networks, health plans, MSOs, and pharmacies. We've architected systems that scaled to hundreds of millions of users. And through all of it, we saw the same thing: fragmentation, friction, and guesswork. Arbiter was born from that frustration. Not another widget, but the intelligent system healthcare should have had all along - modular, AI-native, and built to unify data, technology, and players to power better care. This isn't a consulting spinout or a VC experiment. Arbiter is purpose-built by the buyers - and deployed through the very payers and providers who demanded it.

Why we started

Leadership

Photo of Michelle Carnahan

Michelle Carnahan

Co-Founder, Board Member, CEO

Photo of Winston Esposito

Winston Esposito

COO

Photo of Bill Porter

Bill Porter

CRO

Photo of Allison Kroll

Allison Kroll

Head of Product

Photo of Peter Schaefer

Peter Schaefer

Chief Architect

Photo of Scott Reighart

Scott Reighart

Head of Finance

Photo of Ashish Gupta

Ashish Gupta

Head of Agentic Patient Engagement

Photo of Hannah Heider

Hannah Heider

Chief of Staff