Dr. Macias is a Professor of Pediatrics and Chief of the Division of Developmental-Behavioral Pediatrics at the Medical University of South Carolina in Charleston, SC. She is board certified in Developmental-Behavioral Pediatrics and Neurodevelopmental Disabilities. She began her career as a school-based speech-language pathologist in San Antonio, TX; she subsequently completed medical school and residency in Pediatrics at the University of Texas Health Science Center at San Antonio, followed by fellowship in Developmental-Behavioral Pediatrics at the University of North Carolina at Chapel Hill.

Dr. Macias has an active clinical practice evaluating and treating children with a broad range of developmental and behavioral disorders.  Her research and grant activities have focused on developmental/autism screening and bullying and ostracism. She has served on numerous state and national committees, is past-president of the Society for Developmental and Behavioral Pediatrics, past-chair of the AAP Section on Developmental and Behavioral Pediatrics, and serves on the American Board of Pediatrics Developmental-Behavioral Pediatrics Subboard. She has been involved in multiple national activities regarding developmental and autism surveillance and screening, most recently the AAP periodic survey and 2020 Clinical Reports. A personal and professional goal has been to enhance the interface between developmental-behavioral/neurodevelopmental pediatricians and primary care pediatric providers to improve the quality of clinical service, training, and research in development and behavior.