Samaritan Initiative Act of 2004 - Amends the McKinney-Vento Homeless Assistance Act to establish a program through the Department of Housing and Urban Development (HUD) under which a participating Federal agency shall make matching grants to eligible entities, including faith-based and community-based organizations, for permanent housing (provision of housing or rental assistance) and related treatment (including health and drug and alcohol treatment) and support services for chronically homeless persons.
Requires: (1) a participating Federal agency to establish an interagency implementation and monitoring team; and (2) a grantee to establish a homeless management information system.
Obligates specified authorizations of appropriations for: (1) HUD; (2) the Department of Health and Human Services (HHS); and (3) the Department of Veterans Affairs (VA). Authorizes the participation of other Federal agencies.