The term "doctor" is merely an academic one. It refers to a doctorate, e.g. Phd or doctorate or medicine which in turn is the summation of a large body of work that includes certain requirements. Most programs take at least 5 yrs to be awarded such a title and with many physio diplomas and degrees falling short of that there is no way that one should receive the title.

That said there are physio's in several countries now enrolled in doctorate programs and courses are being lengthened to make this an achievable title. Pity countries like the UK are running fast track 2 yr post grad courses in physio that completely destroy what the rest of the world are trying the achieve!