What are some healthcare jobs that require 0-2 years of schooling?

My mom works as a receptionist in a hospital and I can tell she definitely wants a job with more patient interaction on the clinical side. She's 51 and feels like it's "too late" to go back to school, but I'm trying to do everything I can by finding programs she can go to school for a short time period and have a new career. Would she be wasting her time going back to school at her age? If not, what are some of the shorter education programs for a job in healthcare?