His professional interests include management of pediatric congenital and idiopathic scoliosis as well as isthmic spondylolisthesis. He received his medical degree from the University of Minnesota Medical School. He completed an internship and residency at the University of California, San Francisco Medical Center and a spine surgery fellowship through the Twin Cities Spine Center in Minneapolis. Guillaume has presented research, posters and abstracts and has professional publications. He is a member of the American Academy of Orthopaedic Surgeons and the North American Spine Society. He is a candidate for membership in the Scoliosis Research Society and the Pediatric Orthopedic Society of North America.