Government-run outpatient health facility in the Philippines providing essential, free or low-cost healthcare (preventive, promotive, curative, rehabilitative) to underserved rural communities, acting as a crucial link to specialized care and focusing on public health programs like maternal/child care, immunization, TB treatment, and sanitation, ensuring basic services reach marginalized sectors. Established by law, these units are staffed by health professionals like doctors, nurses, and midwives, and coordinate with barangay health workers for community-level outreach.