About Julian Harris
At Deerfield Management, Julian Harris is an operating partner focused on healthcare services. He is also a director of Ascertain, which automates administrative work for healthcare organizations.
Experience
This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Julian Harris in the role, so the role may have started earlier or lasted longer.
Ascertain Systems, Inc. Current
Operating Partner Healthcare Services at Deerfield Management and director
2026 – Present · New York, NY
Its artificial intelligence agents handle prior authorizations, care coordination, and other healthcare paperwork.
DM
Deerfield Management Current
Operating Partner
Key Colleagues at Startups
The people Julian Harris works with at each company, as listed on that company's latest Form D.
Ascertain Systems, Inc. · Form D, Oct 20, 2026
Mark Michalski
Chief Executive Officer and director
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Carlos Dedesma
Director of Operations & Finance
John Beadle
Co-founder and Managing Partner of Aegis Ventures, director
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Courtney Marcin
Director
Moses Adubi
Director
AS
Ari Shamiss
Director