DANIEL Baldwin has checked himself out of “Celebrity Rehab.”

Baldwin quits “Rehab” following claims that the married father of four – now on his third wife and a new baby – acted inappropriately with porn star and “Rehab” castmate Mary Carey.

Carey alleges that Baldwin asked her to send him pictures of herself and asked about her porn movies, following a conversation about his wife and new daughter, Avis.

“He talked about how much he loves his wife and then he asked me to send him pictures and asked about my movies,” Carey says on tonight’s episode.

Another castmate, ’80s action star Brigitte Nielsen says, “You open up your heart, and then he is writing dirty messages on the phone.”

The show’s host, Dr. Drew Pinsky, is not worried about Baldwin’s sobriety.

Baldwin’s departure means that the great Baldwin-ization of TV is coming to an end.

After a remarkable month-long run, during which all four Baldwin brothers appeared on different TV shows spanning comedy to reality, he is the first casualty.

His brother, Stephen, also appears to come thisclose to leaving “Celebrity Apprentice” on tonight’s episode.