Rural Communities Opioid Response Program-Impact - Open Door Community Health Centers (ODCHC), a Federally Qualified Health Center serving rural Humboldt and Del Norte counties in Northern Calkifornia, will implment the Open Door Rural SUD Initiative (ODRSI) through the Rural Communities Opioid Response Program (RCORP)-Impact. ODRSI will standardize, expand, and sustain coordinated substance use disorder (SUD) prevention, treatment, and recovery services for residents at risk for, experiencing, or in recovery from SUD, and their families, across a rural service area spanning more than 5,000 square miles and 164,000 residents where opioid overdose death rates run two to three times the California state average. ODRSI will expand access to medication for opioid use disorder (buprenorphine, naltrexone, ,and referral-based methadone access) across all ten of ODCHC's SUD-integrated clinic sites, launch a mobile treatment unit to reach unhoused and geographically isolated patients, and introduce youth SUD screening and prevention programming. Supportive services -- benefits navigation, and referrals for housing, transportation, and employment -- will be formalized through a new partnership with McKinleyville Family Resource Center to address the social barriers that most often interrupt treatment. Workforce investments incude a full-time Clinica Program Manager to provide dedicated clinical oversight, two additional SUD counselors, three peer support specialists hired from the recovery community, and standardized SUD training across all clinical roles. ODCHC will lead a four-partner consortium -- Waterfront Recovery Services (medically-managed detoxc and residential treatment), Providence St. Joseph Hopsital (emergency department identification and referral), McKinleyville Family Resource Center (wraparound social services), and the California Center for Rural Policy at California Polytechnic Humboldt (community needs assessment and data infrastructure) -- spanning the full continuum of SUD care. By the end of the grant period, ODCHC expects to grow unduplicated patients served from 750 to 825, with a documented Financial and Sustainability Plan ensuring services continue beyond federal funding.