no its not, why do they put those things in the review? you can't be shore if its his real name when someone else call him in a different name.
There was one scene:JD asks the Janitor what his name is to which he replies "Glen Mathews". However soon another Doctor leaves the building saying 'goodbye Tony' to the Janitor on his way out.
Like they would really give it away anyway. It's part of the Janitors charm, and mystery.
Bill Lawrence said the show would be over when we find out the janitors real name so, if this is the end of the series, Glen Matthews is his real name.