Corner House, Inc. is a non-profit alcohol and other drug evaluation, substance abuse prevention, treatment, and referral program. We offer Alcohol and other Drug Assessment/Evaluation, Level I Outpatient Treatment, Level II Intensive Outpatient Treatment, Level III Reintegration Treatment, Treatment and Employee Assistance Program services at the 418 & 424 Market locations. Residents must be at least 18 years of age and ambulatory. The Outpatient Program serves men and women aged 18 and up.