Homeless individuals have mortality rates three to six times higher than their housed counterparts and have elevated rates of mental illness, substance abuse, and co-morbidities that increase their need for health services. Data on the utilization of Harris County, Texas' public hospital system by 331 homeless individuals and a random sample of 17,824 domiciled patients were obtained from June 2008 to July 2009. Homeless individuals had increased readmission rates, especially within 30 days of discharge, resulting in significantly higher total annual length of stay. Homeless patients also more frequently utilize public hospitals for mental illness and HIV. Lack of community health services contributes to an increased dependence and preventable over-utilization of public hospital systems. Case management interventions integrating primary and behavioral care into health homes, medical respite programs, and training for health care professionals who provide indigent care will improve health outcomes of this population and reduce costs.

The Jail Inreach Project is a health care-based intensive case management "inreach" program that engages incarcerated persons from the homeless population who have behavioral health disorders (mental illness, substance use disorder, or both) in establishing a plan for specific postrelease services. The Jail Inreach Project aims to provide continuity of care and integrate this highly marginalized subpopulation of homeless persons into primary and behavioral health care systems by establishing patient-centered health homes. The use of integrated primary and behavioral health models in conjunction with provisions for immediate access to and continuity of care upon release is emerging as a best practice in combating the rapid cycling of this vulnerable population between streets and shelters, emergency centers, and the county jail. Preliminary results indicate that more than half of the persons referred to the program remained successfully linked with services postrelease, whereas slightly less than one-third who engaged in services while incarcerated did not retain linkage on release.

Many jail releasees have persistent physical and mental health needs that are frequently unaddressed, leading to high rearrest rates and return to jail. This article details the potential benefits and challenges of integrated health services during transition planning and return to the community and details lessons learned from a pilot program in Houston, Texas. It examines how patient-centered medical homes, a modality supported by policy changes at the federal level, provide one means of effective transition from jail to the community that integrates behavioral health services with primary care. Evidence from the pilot program suggests that effective integrated health services for jail releasees can help divert individuals from a cycle of recidivism.

The high prevalence of these mental illnesses combined with the increased burden of medical comorbidity among HOMES Clinic patients has implications for student-managed free clinics, which often operate on limited budgets. Strategies for providing care for these patients in this setting include integrated care, street medicine, and case management.