Our local hospital rarely hires anyone to perform most of these duties. Instead, they rely on a large group of volunteers. Some answer phones in the waiting rooms, some transport people to treatement rooms and some sit at the front desk and give directions.
I thought about doing some volunteer work myself as a hospital attendant, since I only live about 6 blocks from the facility. I think there's a training program you have to go through first before you can do anything at the hospital, though.