Background: Community Health Centers care for over 20 million rural, low income and minority Americans every year. Patients often have complex mental health problems such as Posttraumatic Stress Disorder (PTSD) and Bipolar Disorder. However, Community Health Centers located in rural areas face substantial challenges to managing these patients due to lack of onsite mental health specialists, stigma and poor geographic access to specialty mental health services in the community. As a consequence, many rural primary care providers feel obligated, yet unprepared, to manage these disorders, and many patients receive inadequate treatment and continue to struggle with their symptoms. While integrated care models and telepsychiatry referral models are both promising approaches to managing patients with complex mental health problems in rural primary care settings, there have been no studies comparing which approach is more effective for which types of patients. Objectives: The central question examined by this study is whether it is better for offsite mental health specialists to support primary care providers' treatment of patients with PTSD and Bipolar Disorder through an integrated care model or to use telemedicine technology to facilitate referrals to offsite mental health specialists. We hypothesize that patients randomized to integrated care will have better outcomes than patients randomized to referral care. Methods: 1,000 primary care patients screening positive for PTSD or Bipolar Disorder will be recruited from Community Health Centers in three states (Arkansas, Michigan and Washington) and randomized to the integrated care model or the referral model. Patient Outcomes: Telephone surveys will be administered to patients at enrollment and at 6 and 12 month follow-ups. Telephone surveys will measure access to care, therapeutic alliance with providers, patient-centeredness, patient activation, satisfaction with care, appointment attendance, medication adherence, self-reported clinical symptoms, medication side-effects, health related quality of life, and progress towards life goals. A sub-sample of patients will be invited to participate in qualitative interviews to describe their treatment experience using their own words. Likewise, primary care providers will be invited to participate in qualitative interviews to voice their perspective.