Brian is a board-certified MD/PhD Pediatric Neurologist who has served in roles as a clinician, academic researcher, and vice-president in top biotech and healthcare companies. He has extensive experience leading teams of teams, coordinating and uniting large groups of people to successfully develop new pediatric medicines, including gene therapies.

Brian’s most recent clinical/academic practice has been at Massachusetts General Hospital – Harvard Medical School and previously Colorado Children's Hospital. Currently, Dr. Tseng is working as a NOLS Wilderness Medicine certified First-Responder with the Rocky Mountain National Park Search and Rescue efforts, guest lectures in several medical schools, consults with the NDA Partners, and serves as the CSO of The PolG Foundation, a new non-profit for a community of individuals who are affected by a rare form of genetic mitochondrial disorder.