The average stay for the Integrated Detox Program is 5-7 days. The average stay for the Residential Program is 30 days. The typical Partial Hospitalization Program is 3-5 weeks and the Intensive Outpatient Program is 20 -30 sessions which translates to 30-45 days. Overall, the length of stay is determined by the history of alcohol/drug use, withdrawal symptoms, progress toward treatment plan goals, and insurance authorization.