Clark Freifeld is an Affiliate Faculty member at Boston Children's Hospital Computational Epidemiology Group. His research focuses on applications of computing technology and artificial intelligence for improving population health. Clark has co-authored 35 journal articles and co-founded and architected a range of health informatics projects, making use of big data, machine learning, and natural language processing.

Clark's projects include: HealthMap, a global disease surveillance platform; MedWatcher, a medical product safety monitoring system; and StreetRx, a crowdsourcing tool for understanding black market pharmaceutical transactions. His work has been used by many millions of people and supported by public health agencies including CDC, WHO, DHS, DOD, HHS, and FDA, as well as being recognized by the Smithsonian and Library of Congress. Before joining the faculty at Northeastern, Clark was co-founder and Chief Technology Officer of Epidemico, a health informatics spinout from Boston Children’s and MIT, now a division of Booz Allen Hamilton.

He holds a bachelor’s in computer science and mathematics from Yale University, his master’s from the MIT Media Lab, and a PhD in biomedical engineering from Boston University.

Works on

HealthMap, Social media analytics


Epidemiology, Natural language processing, Machine learning, Databases, Fitness, Diet/nutrition