Jayengan Community Health Center has implemented a Community Health Center Management Information System for registration, but the Maternal and Child Health Clinic still uses manual methods for recording patient examinations. This condition results in inefficient service processes, potentially leading to data errors, duplicate recordings, and slowing down patient care. This study aims to analyze the existing system, identify problems, and design an integrated web-based health information system using the Prototype method. Data collection was conducted through interviews and direct observation with registration officers, doctors, midwives, and the head of the community health center. The system design included the creation of Use Case Diagrams, Activity Diagrams, Data Flow Diagrams, Entity Relationship Diagrams, database structures, and system interfaces. The research results resulted in a web-based health information system design that includes patient registration, patient data, the Maternal and Child Health Clinic, medical records, reports, and a dashboard. The integration of the Maternal and Child Health Clinic into the system allows doctors and midwives to access and input examination data digitally, eliminating the need for physical documents and duplicate recording processes.
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