Dr. Gallagher is an attending physician at Seattle Children's Hospital and an Associate Professor in the Department of Pediatrics at the University of Washington School of Medicine. She completed her fellowship in Craniofacial Medicine at Seattle Children's Hospital in 2011.

Dr. Gallagher's research focuses on improving neurodevelopmental and academic outcomes for children with craniofacial conditions. She studies interventions that improve these outcomes, including coaching for caregivers about dialogic reading and improving access to hearing screening and treatment in low resource settings. She is the Medical Director of the 22q Program and leads a dedicated multidisciplinary team focused on improving treatment and outcomes for patients and families affected by 22q11.2-related disorders. Dr. Gallagher also enjoys teaching medical students, residents, and fellows.