
Cobi Blumenfeld-Gantz
About
Cobi Blumenfeld-Gantz co-founded Chapter after watching his parents struggle with Medicare enrollment, when a traditional broker steered them into a plan that cost more than an identical cheaper option. He and co-founder Corey Metzman have since built Chapter into a Medicare navigation platform with more than $100 million in annual recurring revenue and a $3 billion valuation. He previously led US government teams at Palantir. In October 2023, he testified before the Senate Finance Committee on deceptive Medicare Advantage marketing.
In the news
With $100M Raise, Chapter Targets Medicare Mismatches for Seniors (opens in a new tab)MedCity News · Apr 10, 2026
Medicare navigation startup Chapter pockets $75M to expand health system partnerships (opens in a new tab)Fierce Healthcare · Apr 21, 2025
Chapter, AI Medicare Broker, Raises $75 Million at $1.5 Billion Valuation (opens in a new tab)Bloomberg · Apr 16, 2025
Notable experience
Chief Executive Officer
Co-Founder
2021 – Present
Ohio Chamber of Commerce (opens in a new tab)
Member Board of Directors
Jan 2024 – Present
Palantir Technologies (opens in a new tab)
Business Development
2014 – 2020

Qwiki
Finance and Operations Associate
Jun 2011 – Aug 2012
Education
The Wharton School (opens in a new tab)
B.S. in Economics: Business, Operations & Information Management
2012
University of Pennsylvania (opens in a new tab)
B.A., Diplomatic History, Modern Middle East Studies
2012
Reichman University (opens in a new tab)
Business, Middle East Studies
Middlebury College (opens in a new tab)
Arabic Language School, Arabic Language and Literature




