Home / Greater Philadelphia Resource Guide / TREE IOP/OP-Intensive Outpatient Substance Abuse Treatment / TREE IOP/OP-Intensive Outpatient Substance Abuse Treatment Services: Recovery and Substance Use, Support Groups Populations Served: Substance Abuse,The Public Languages Spoken: Spanish Address: 1211 Chestnut Street Suite 610Philadelphia, PA 19107 Phone: 215-985-4448 Website Directions Back to Resource Guide