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Mason Marks

Visiting Professor of Law

Spring 2024

Mason Marks
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Mason Marks, MD, JD is a Visiting Professor of Law at Harvard Law School.

Dr. Marks is the Florida Bar Health Law Section Professor at the Florida State University College of Law. At Harvard Law School, he is the senior fellow and lead of the Project on Psychedelics Law and Regulation (POPLAR), which he co-founded at the Petrie-Flom Center for Health Law Policy, Biotechnology, and Bioethics in 2021. Professor Marks is also a visiting fellow at the Information Society Project (ISP) at Yale Law School. He previously served as a fellow-in-residence at the Edmond J. Safra Center for Ethics at Harvard University and a research scholar at the Information Law Institute at NYU School of Law.

Professor Marks analyzes drug laws and policies, artificial intelligence (AI) and data protection laws, and FDA regulation. He is particularly interested in controlled substance regulation and the application of AI to medical decision making. His legal scholarship has been published or accepted by the Duke Law Journal, Harvard Law Review Forum, Fordham Law Review, Boston University Law Review, UC Irvine Law Review, UC Davis Law Review, Administrative Law Review, Yale Journal of Law and Technology, and books by Cambridge University Press. His book on psychedelic law and politics is under contract with Yale University Press.

Professor Marks frequently publishes in peer-reviewed medical journals such as the New England Journal of Medicine, JAMA, Nature Medicine, Nature Mental Health, and Neuropharmacology. In addition to academic scholarship, he writes for leading news outlets such as the Washington Post, Los Angeles Times, the Guardian, Wired, Slate, and Vice News. His research and legal commentary have been featured by the New York Times, Wall Street Journal , Washington Post, ABC News, Fox News, Bloomberg News, the Economist, NPR’s All Things Considered, HBO’s Last Week Tonight, and other outlets.

Professor Marks teaches constitutional law, administrative law, health law, drug law, psychedelic law, and related seminars. An expert on the fast-emerging psychedelics industry, he advises state and federal agencies and lawmakers on the evolving controlled substances landscape. He has presented his research at the Food and Drug Administration, the National Institutes of Health, the Department of Health and Human Services, the U.S. Public Health Service, and the National Academies of Sciences, Engineering, and Medicine.

Professor Marks received his BA from Amherst College, his MD from Tufts University, and his JD from Vanderbilt University.


  • B.A. Amherst College
  • M.D. Tufts University School of Medicine
  • J.D. Vanderbilt Law School