AllianceChicago, a Health Resources and Services Administration funded Health Center Controlled Network with decades experience leading cutting edge health information technology initiatives in the Safety Net partners with Heartland Alliance Health (a Community Health Center), Chicago House (a community-based Homeless Service organization), EMI Advisors and NORC at the University of Chicago to prototype a shared interoperable care plan. The project leverages FHIR-based resources and the experience and capabilities of a strong partnership to enable service providers to break down barriers to integration and coordination of services in order to better address social determinants of Health for individuals experiencing homelessness. The project entails implementation of a functional shared interoperable care plan that spans the collective domains of needs and services of the two service organizations using disparate information systems/technology. By successful demonstration of this use case across the two participating service organizations with the two-year period, we pave the way for realizing the application of the demonstrated technical application to scale to any population and collection of service providers. In following years, we contemplate scaling the solution across additional service providers, and to other populations served.