If he is paying and its by appointment what a load of shit, the physio should learn to run a business. If its free under medicare or workcover not much you can do, I know alot of professionals will chose normal clients over workcover clients due to all the extra paperwork. My old doctor was like that, I made an appointment, she would get old people who walked in and they would always get pushed infront of me. Now I just pay a gap, see an appointment only doctor which doesnt allow walk ins and im always in within 10-20 mins.
I think some people like to overlap clients incase someone doesnt show up or so they dont lose any downtime, If they have constant clients queued up they wont lose any money due to having no one to work on. Im impatient, if its appointment only and I have to wait over an hour I just walk out.