Gateway Comprehensive Medical Group occupies 1323 Third Avenue in Chula Vista's Third Avenue Village, operating a multi-location primary care and pediatric practice with additional offices in Eastlake, San Diego, and Escondido. The Third Avenue clinic's general medicine and family care scope coordinates prescription management with local dispensaries including Chula Vista Pharmacy for chronic-disease medication fulfillment in western Chula Vista. The 91911 zip code location positions the practice between the Broadway commercial corridor and Scripps Mercy Hospital Chula Vista on H Street, placing it within the Medical Center Drive referral zone anchored by Sharp Chula Vista Medical Center . After-hours triage for acute presentations routes patients to walk-in facilities including AFC Urgent Care Chula Vista for non-emergent conditions outside standard clinic scheduling. Services span the full primary care continuum from pediatric well-child visits through adult chronic-disease management, sports physicals, and acute-visit diagnostics including point-of-care rapid strep and influenza antigen testing.