CSI: NY 333 Storyline

I wanted to talk about CSI: NY's season 4 storyline, the 333 stalker.  I wondered how Mac's stalker, Drew Bedford, knew Mac's

• hotel rooms he was staying in's phone number
• cell phone's #
• office's phone #
• office location

I guess he used Stella's office card to guess Mac's office number and office location to call him and leave the luggage with the bloody t-shirt.  He could have called the area hotels and asked if Mac Taylor was staying in one of the rooms.

The bloody t-shirt belonged to Will, Andy's brother who died.  The chalk outline was of Will, and the newspaper satchel belonged to Will.  The dead body was Bobby Toole - the man who killed Will.