Jill Feffer, MD, FACP, FACE, is an experienced endocrinologist currently serving as Chief of Endocrinology at NYC Health + Hospitals and Division Chief at Elmhurst Hospital Center since February 2025. Additionally, Jill Feffer is a content reviewer for MCG Health, providing external peer reviews for endocrinology guidelines, and a medical consultant for Alight Solutions, offering expert medical opinions. As a freelance medical consultant, Jill Feffer specializes as a medical reviewer, editor, and writer. Jill Feffer is also a member of the Clinical Specialist Network panel at RubiconMD, delivering eConsults on adult endocrinology and obesity medicine. Previously, Jill Feffer worked at Optum, where contributions included developing osteoporosis treatment algorithms, and completed a fellowship at Mount Sinai St. Luke's and Mount Sinai West. Educational credentials include a Doctor of Medicine from NYU Grossman School of Medicine and a Bachelor of Arts in Molecular Biology from Princeton University.
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