Population (for evaluation) - Using administrative data from VHA's Clinical Data Warehouse (CDW), the investigators will identify all patients at participating CBOCs whose most recent PC-PTSD screen was positive, had a VHA encounter in the past 12 months with a PTSD diagnosis, and had no specialty mental health encounters at the VAMC in the past 6 months. Eligible patients will be sampled for the evaluation from the selected CBOCs and 100 will be recruited to participate from each VAMC via opt-out letters. The total anticipated sample size will be 600. Participating patients will complete a baseline survey and 3 follow-up surveys every 9 months. Local clinicians at implementation sites will have the flexibility to decide who is eligible to receive the TOP clinical intervention, but the investigators expect there will be considerable overlap between those who are eligible for the evaluation and those considered to be eligible for the TOP intervention by local clinicians.