Our hospital offers specialized care services to address unique medical needs. 
Dr. Brandon Marshall is a board-certified Emergency Medicine physician recently moved to Guam to join GRMC. He earned his Doctor of Medicine from Michigan State University College of Human Medicine, later completing residency and a medical toxicology fellowship at UPMC. Dr. Marshall brings specialized expertise in emergency medicine to GRMC, strengthening the hospital’s ability to provide safe, timely, and compassionate care for the island community.
Hiking, weight training, horror novels, writing, tabletop RPGs, cats

Dr. Brandon Marshall is a board-certified Emergency Medicine physician who joined GRMC with extensive training in toxicology, emergency care, and complex critical care presentations. Dr. Marshall earned his Doctor of Medicine from Michigan State University College of Human Medicine in 2019, following his completion of a Bachelor of Science in Biology from the University of Michigan–Flint in 2015.
Beyond clinical and scholarly work, Dr. Marshall has a strong record of community service, including global medical outreach in Uganda, Cuba, and Sri Lanka, and volunteer efforts during the COVID-19 pandemic. He has also served as a peer reviewer for the American Journal of Emergency Medicine.
Outside of his professional duties, Dr. Marshall enjoys hiking, weight training, reading horror novels, writing, tabletop RPGs, and spending time with his cats.