Deerfield, based in New York, backs Seed-stage life sciences and healthtech startups, with a specialist style and a latest fund over $600M, as seen in Boulevard Bio and Atlas Data Storage.
4 people on the investing team, 3 of them partners who can make the call. Partners are listed first.



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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
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Deerfield reports entry at seed.
Deerfield has not reported a check size.
Deerfield has not reported a lead preference.
Jim Flynn (Managing Partner; investment and portfolio oversight), Stephen Anastos (Managing Director, Healthcare Services; joined to focus on early and growth-stage healthcare technology and services investments), Anne Daub (Partner, Therapeutics).
No recent activity since September 2026.
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