William Sheehan, MD

William Sheehan, M.D., is a board-certified allergist and immunologist. He earned his medical degree from the Northwestern University Feinberg School of Medicine and a bachelor's of arts degree from the College of the Holy Cross. Dr. Sheehan completed pediatrics internship and residency programs at the Duke University Medical Center before joining the Children’s Hospital of Boston Fellowship Program in Allergy and Immunology. He joined Children’s National Hospital in August 2017.

Dr. Sheehan finds joy in helping patients with asthma, allergies, eczema and immunodeficiency. When not seeing patients, he is active in clinical research on asthma and allergies. He has spent much of his career investigating the interaction of environmental exposures and asthma. Dr. Sheehan's work has focused on improving the lives of inner-city children by eliminating detrimental exposure and improving health outcomes. With his expertise, he has assisted on several multi-center national asthma research networks. Additionally, Dr. Sheehan has recently been involved in two groundbreaking asthma prevention trials.

At home, Dr. Sheehan enjoys time with his wife and children. He is an avid runner and skier and a well - known New England transplant who fervently cheers for all the Boston teams.