Dr. Drew is back with a fourth season of Celebrity Rehab to help another batch of D-listers sober up, including Tiger Woods’ reported No. 1 mistress Rachel Uchitel. Joining the tabloid cover girl are The Hills’ Jason Wahler, supermodel Janice Dickinson, alleged kidnapping victim Jeremy London, socialite Jason Davis, and teen idol Leif Garrett. On-air doctor extraordinaire, Dr. Drew Pinsky, who is an M.D. at Huntington Hospital, says his approach is to use his own celebrity to “humanize the process” of recovery. The fourth season of Celebrity Rehab is expected to air by the end of 2010. Uchitel’s place on Celebrity Rehab means she’s out of the running for Celebrity Apprentice. Though she was being considered for the next round of the show, Donald Trump has put rumors to rest: “We no longer have interest in Rachel,” he said in a statement on Monday.