Dr. Mathai has been active in numerous committees and holds several leadership positions in academic societies. He is the current chair of the Pulmonary Vascular Disease Network for the American College of Chest Physicians and has served on the steering committee for this organization for the past 4 years. He has served on several committees for the Pulmonary Circulation Assembly of the American Thoracic Society, including the Program Committee and Nominations Committee. He has organized symposia and delivered presentations related to pulmonary hypertension at numerous international meetings. He is the author of more than 100 publications and has given invited research lectures nationally and internationally. Dr. Mathai is also an active member of patient advocacy organizations. Currently, he is a member of the Scientific Leadership Council of the Pulmonary Hypertension Association where he serves as national chairperson of the Preceptorship Program Planning Committee. He is also a member of the Rare Disease Advisory Panel for the Patient Centered Outcomes Research Institute. Dr. Mathai also serves as the faculty leader of the inpatient pulmonary service, the Carol Johns Service, where he is responsible for the education of the internal medicine housestaff and pulmonary fellows. He has also received the Frederick L. Brancati Award for mentorship from the Department of Medicine at Johns Hopkins.