Nicolas Jbeyli is Head of Strategy and Operations, Deerfield Applications Team and joined the firm in 2025. Prior to Deerfield, Mr. Jbeyli worked at Boston Consulting Group for over seven years in roles of increasing responsibility, most recently as Principal. Before Boston Consulting Group, he worked at Booz Allen Hamilton for over two years as a consultant. Mr. Jbeyli started his career as an intern at the European Council for Nuclear Research. He holds a M.S. in Computer Engineering with AI concentration from Saint Joseph University.


Launched in 1994, Deerfield Management Company is an investment firm dedicated to advancing healthcare through information, investment, and philanthropy—all toward the end goal of cures for disease, improved quality of life, and reduced cost of care.
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Investment
Supporting companies across the healthcare ecosystem with flexible funding models…
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Portfolio Companies
Deerfield generally maintains a combined portfolio of more than 150 private and public investments across the life science, medical device, diagnostic, digital health and health service industries at all stages of evolution from start-up to mature company.
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Research Collaborations
Deerfield partners with leading academic research centers, providing critical funding and expertise to further sustain and accelerate the commercialization of discoveries toward meaningful societal impact by advancing cures for disease.
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Strategic Partners
As a strategic partner, Deerfield offers capital, scientific expertise, business operating support, and unique access to innovation.
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Deerfield Foundation
The Deerfield Foundation is a New York City-based not-for-profit organization whose mission is to improve health, accelerate innovation and promote human equity.
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Children's Health Diversity Initiatives Maternal Health View AllFounded Diversity Programs
Break into the Boardroom Fellowships Science to the Street (formerly Women in Science)
Cure Campus
Cure is a 12-story innovation campus in New York City that intends to bring together innovators from academia, government, industry, and the not-for-profit sectors to advance human health and accelerate the fight against disease.
Read More Join the Cure Email ListCure Programming
Cure has a series of expert lectures intended to advance thought in healthcare, management, innovation, policy, and other relevant subjects. This fosters growth and education for those at Cure and its guests.
Events at the Cure
Mark Michalski, M.D.
Mark Michalski, M.D., is Chief Information Officer and joined the Firm in 2024. Mark is responsible for overseeing the expansion and launch of new software and AI enabled products and services and supporting related capabilities for portfolio companies. Dr. Michalski concurrently serves as Chief Executive Officer at Ascertain, a technology company specializing in AI-driven automation solutions for healthcare enterprises. Before this, Dr. Michalski led strategic business development for Amazon’s healthcare and life sciences business units. He also served as Founding Executive Director of Mass General Brigham AI (formerly the Center for Clinical Data Science). Earlier in his career, Dr. Michalski served as President and Chief Medical Officer at Butterfly Network (NYSE: BFLY) and Chief Medical Officer at Hyperfine Research (NASDAQ: HYPR). Dr. Michalski holds a B.S. in Cybernetics from University of California, Los Angeles, a M.D. from Stanford University School of Medicine, and completed residency training at Yale New Haven Hospital. Dr. Michalski is certified by the American Board of Radiology and holds a medical license in New York State.