After graduating from Cornell University, Dr. Coste received his medical education at the New York College of Osteopathic Medicine. He completed a pediatric residency at Winthrop University Hospital in New York before joining the division of Allergy, Immunology and Pulmonary Medicine at Washington University for his fellowship in pediatric pulmonary medicine. Dr. Coste joined the faculty of Washington University in the division of Allergy, Immunology and Pulmonary Medicine upon completion of his fellowship in 2010. He is currently the Director of the Pediatric Pulmonary Fellowship program and physician leader for the 7100 Pulmonary Ward Unit-based Joint Practice Team. He is currently participating in initiatives through the Cystic Fibrosis Foundation to enhance partnerships between clinicians, patients, and their families.