We provide emergency mental health services for children between the ages of 12 and 17 if your child is being transported to Medical City Green Oaks from another hospital and/or admitted to our facility, it is important to know what to expect. Once your child arrives at Medical City Green Oaks and undergoes an evaluation (which may take up to 23 hours), appropriate ongoing care will be determined. Your child will be assessed by a physician as soon as possible. The morning after your child's admission (sometimes the same day), case managers will call for background and current crisis information.