In a true, life-threatening emergency, please call 911 immediately. For urgent medical issues that cannot wait until regular office hours, please call the St. John’s Health operator at 1.307.733.3636 to be connected to our after-hours nurse line. Children’s Hospital Colorado and its experienced pediatric nurses are available nights and weekends to answer your urgent questions. Flat Creek Pediatrics and two other pediatric practices in Jackson also provide an on-call physician for emergencies and issues that cannot be resolved by the after-hours nurse line.