Kelsey Grammer has checked out of the Betty Ford Clinic for substance abuse after a month's stay.
Grammer, 40, left the clinic on Monday and was to return to the set of "Frasier" Thursday, said Kim Conant, a spokeswoman for the show.
Production of the NBC series had been on hiatus since Grammer voluntarily entered the clinic after flipping his Dodge Viper near his Los Angeles-area home on Sept. 21.
He suffered a minor head cut in the crash. Grammer was charged with misdemeanor driving with an expired license, which carries a maximum sentence of six months in jail and a $1,000 fine. No arraignment date has been set.
He originally was arrested for investigation of driving under the influence, but prosecutors said they lacked evidence to support the charge.