He completed his child and adolescent psychiatry fellowship at Los Angeles County USC Medical Center, where he served as Chief Fellow of the Division of Child and Adolescent Psychiatry. He also received his Certification of Additional Training in Sports Psychiatry from the International Society for Sports Psychiatrists in 2023.

Dr. Siragusa is experienced in the diagnosis and treatment of children, adolescents, adults, and athletes of all ages with various mental health conditions including depression, bipolar, and anxiety disorders, ADHD, trauma-related disorders, sleeping and eating disorders, as well as various developmental disabilities including autism spectrum disorder.