
In this interview, Chapter co-founder and CEO Cobi Blumenfeld-Gantz discusses the company's rise to a $3 billion valuation in the senior health navigation market. He outlines their transition to an AI-native infrastructure, the power of an unbiased advisory model, and how they tripled revenue with flat headcount. Blumenfeld-Gantz also shares insights on strategic wealth management partnerships, legislative advocacy in Washington, and Chapter's ultimate vision to become the comprehensive super-app for retirement.
Cobi Blumenfeld-Gantz is the co-founder and CEO of Chapter, a Medicare navigation platform helping seniors make better healthcare decisions. Prior to founding Chapter, he spent several years at Palantir Technologies, where he worked on government-focused initiatives. Under his leadership, Chapter has grown into one of the most valuable private companies in senior healthcare navigation, surpassing $100 million in annual recurring revenue while using technology and AI to deliver personalized Medicare guidance at scale.
July 9, 2026

The idea came from watching family members struggle with Medicare enrollment. My grandfather's experience first exposed me to the complexity of the system, and later my parents received poor advice that resulted in missed deadlines and ongoing penalties. It became clear that seniors needed a better way to navigate Medicare.
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