Can't agree more. There is no reason to begin a call any other way in these settings. From the moment the number pops up on my phone, I am no longer breathing and will exhale only when I hear "there's no emergency..."
Periodic reminder that if you work somewhere where you have custody of children (school, hospital, day care, camp, etc) and you need to make a non-urgent call to a parent/caretaker, please say "there's no emergency" as soon as they answer before engaging in a small talk. ✌🏽