The diverse substance abuse rehabilitation programs which are accessible to alcohol and drug addicted people in Portola, CA. can vary in a lot of various ways. Some substance abuse rehab programs are conducted in a residential or inpatient location, where individuals remain for the duration of their treatment which offers a more therapeutic rehabilitation environment. Others provide drug and alcohol abuse treatment programs on an outpatient basis which provides a sense of flexibility, although outpatient centers are not always a suitable alcohol and drug abuse rehabilitation service for men and women in Portola, CA. who are struggling with long term addiction problems. Whether inpatient or outpatient drug and alcohol abuse rehab programs are selected, there are varying amounts of time that individuals will be expected to continue to be in the alcohol and drug rehabilitation program. For instance, many short-term programs provide programs for 4 weeks or less, whereas long-term centers will call for at least a 12 week stay.