Cross-border health plan administration in Chula Vista runs through Unicare Systems Inc, a California corporation (number 1870510) incorporated in 1994 with offices at 333 H Street in the Broadway-H Street commercial node. The company manages enrollment processing and provider-network referrals within the same South Bay health-services ecosystem as Community Health Group, which administers Medi-Cal and marketplace plans for San Diego County residents. Plan administration covers binational claims coordination across medical facilities in San Diego County and Baja California, serving enrollees who work in the United States and access care through a cross-border provider network. The H Street location sits inside the Chula Vista Center complex at Suite 6040, positioning the office near the Chula Vista VA Clinic at 353 H Street and multiple transit connections along the Broadway corridor. That cross-border care model extends to senior populations requiring coordinated coverage, a demographic also served by residential communities including Fredericka Manor Retirement Community in western Chula Vista. Enrollment processing handles HMO-model referrals, binational pharmacy benefits, and specialist authorizations across a provider network spanning San Diego County and the Tijuana-Rosarito medical corridor.