enigma
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Kelvin Chan
Kelvin Chan is a co-founder of Nirvana, a New York healthtech company that uses machine learning and data science to turn insurance verification and cost estimation into something providers and patients can trust. He leads product and serves as president. A Columbia-trained neuroscientist who spent years building enterprise data software at Enigma, Chan started Nirvana in 2019 after a frustrating personal experience trying to find out whether his insurance would cover a therapist. The company has raised $24.2M in Series A funding led by Northzone and now powers eligibility checks across digital health platforms and provider offices nationwide.
Pratap Ranade
Pratap Ranade is the CEO and co-founder of Arena (Arena Physica), a New York startup building Atlas, an AI hardware engineer grounded in applied physics that helps semiconductor, aerospace, automotive, medical-device and defense companies design and test physical hardware. A Stanford and Columbia-trained physicist who left a PhD to join McKinsey, he previously co-founded Kimono Labs (acquired by Palantir) and led engineering and machine learning at Enigma. Arena raised a $30M Series B in April 2025 and counts AMD, Bausch & Lomb and Anduril among its partners.