
Cobi Blumenfeld-GantzCo-Founder & CEO
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.
Founder Stats
- Health & Wellness
- Started 2020
- Approx. 8.3 Million/mo
- 180+ team
- New York, New York, United States
About Cobi Blumenfeld-Gantz
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.
Interview
July 9, 2026
What inspired you to start Chapter?

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.
How did your experience at Palantir influence the way you built Chapter?
Why did you believe an unbiased customer-first model could outperform traditional Medicare brokers?
When did you realize the model was working?
How did you build Chapter’s Medicare data infrastructure?
How have you been able to triple revenue while keeping corporate headcount relatively flat?
Why is customer retention so much stronger than the industry average?
How did Chapter develop relationships with major wealth management firms?
What role do financial advisors play in Chapter’s growth strategy?
What was it like testifying before the Senate Finance Committee?
How has Chapter attracted investors from different political and professional backgrounds?
How do you see Chapter evolving beyond Medicare?
How are you thinking about future fundraising and liquidity events?
How will revenue evolve as new retirement-focused products launch?
How does Chapter stay ahead as larger healthcare companies enter the market?
What is your approach to hiring?
What is your long-term vision for Chapter?
Table Of Questions
Video Interviews with Cobi Blumenfeld-Gantz
Chapter Hits $3B Valuation with $100M Raise: Interview with Cobi Blumenfeld-Gantz, CEO & Co-Founder
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