Hung Cheung, MD, MPH, FACOEM
President and Chief Science Officer, Cogency Environmental Group
Hung K. Cheung, MD, MPH, FACOEM, has been a member of the Healthy Housing Solutions Board of Directors since 2015 and has served as its chair since February 2025. Dr. Cheung is the president and chief science officer at Cogency Environmental Group in Baltimore, Maryland. Since beginning his training at Johns Hopkins over 25 years ago, Dr. Cheung has worked full time in occupational and environmental medicine and environmental toxicology, as well as in public health consultation, where he has investigated thousands of environmental health complaints in hundreds of homes, schools, commercial office buildings, and manufacturing facilities.
In June 2000, Dr. Cheung was named the state medical director for the State of Maryland agencies and state employees. In that capacity, he worked closely with state government, local municipalities, and many large corporations in building safe, healthful, and productive workplaces. Recently, he was the principal investigator of a large peer-reviewed multifacility U.S. Department of Defense epidemiology study in which over 7,000 occupants with environmental complaints participated from over 350 study areas. He was also appointed to the ACOEM evidence-based panel for the creation of ACOEM evaluation and treatment guidelines. Additionally, Dr. Cheung was on the Maryland Governor’s Task Force on Indoor Air Quality. The Task Force met for 10 months reviewing the latest literature, data, testimonies of experts and patients, and best practices, and then generated a set of recommendations to the governor and the state legislature in July 2002.
Dr. Cheung is a graduate of Loyola College in Baltimore and received his medical degree from the University of Maryland Medical School. His first residency and board certification was in primary care/internal medicine at the University of Maryland Hospital. He later received his Master of Public Health degree in environmental sciences from the Johns Hopkins University School of Hygiene and Public Health, where he honed his environmental health investigative skills. Dr. Cheung returned for further postgraduate training (and received his second board certification) in preventive medicine specializing in occupational and environmental medicine from the Thomas Jefferson University in Philadelphia. He achieved fellowship status at the American College of Occupational and Environmental Medicine (ACOEM). Dr. Cheung co-chairs the environmental health and risk assessment module as well as outbreak investigations to resident doctors in training at the University of Pennsylvania Perelman School of Medicine, where he is also an adjunct associate professor. Dr. Cheung precepts and mentors resident doctors from both the Johns Hopkins University Bloomberg School of Hygiene and Public Health and the University of Pennsylvania Perelman School of Medicine.