The number Jane used to reach Sheriff McAllister is (707) 555 - 0163. The four last numbers may be a reference to Uncial 0163, the greek manuscript of the New Testament of The Bible, more specifically to a small part of the sixteenth chapter of the Book of Revelation (16:17-21). I think this is one of Heller's hidden clues. Let's take a look at it.
 
"And the seventh angel
poured out his vial into the air; and there came a great voice out of the
temple of heaven, from the throne, saying, It is done."

Now that might lead you guys to believe that Stiles is the one being spotted here, because of the vial and stuff, but if we read carefully this particular chapter we'll find reference to seven angels (which I think Heller is using as a metaphor to the seven suspects).
And who might be this seventh angel? The last and ultimate one? 

Well, let's take a look at the order of the suspects as they are read by Lorelei Martins:

1. Bret Stiles
2. Gale Bertram
3. Ray Haffner
4. Reede Smith
5. Bob Kirkland
6. Sheriff McAllister
7. Brett Partridge

Yes, he is the seventh suspect, the seventh angel. He is Red John.

(PS: the third angel from the Revelations book turns his vial upon the seas, making the water turn into blood. So Haffner is still a possibile suspect, IMO).

You can read about the Uncial 0163 here: http://en.wikipedia.org/wiki/Uncial_0163
You can read Revelations 16 here: http://www.htmlbible.com/kjv20/B66C016.htm

And you can rewatch the season 5 finale, to recap Lorelei Martins reading the list of suspects, here:http://www.youtube.com/watch?v=77kdVncqZCs