However.
"Doctor" from a latin word meaning "he who is able to teach". From the first University in the world (Bologna- Italy) this title competes to those who obtain the Laurea (another latin word meaning "he who brings bay-tree (laureum)", a special ancient crown, in Ancient Greek culture meaning wisdom.
So, in Italy, you can have this title only if you are "laureato" (gratuated). You can be a Doctor in Science, or in Literature, or in Medicine...
PT in Italy are only graduated, so you can call yourself "Doctor" legally, according a decree (1938 a.C.)
Really a PT is able to "teach" rehabilitation to anyone, as a shoemaker is able to teach everyone to make shoes.
So I think is a good perfect legal and honest thing calling "Doctor" a PT.
Jesus is the perfect Doctor even if He had no graduated title. Doctor or not a PT is calling to follow Him giving health to people who is disable. Isn't it?
Thanks
Francesco