<![CDATA[Medical information release processes in Indonesian hospitals often suffer from data inconsistency, process delays, and weak coordination, while simultaneously operating under strict regulatory and privacy requirements. This study designs a user interface (UI) for a medical information release application using a Design Thinking methodology encompassing empathize, define, ideate, prototype, and test phases. The resulting high‑fidelity prototype adopts a dual‑pathway architecture that separates navigation flows for patients/third parties and Health Information Management (HIM) personnel, and integrates 13 core features aligned with Indonesian Ministry of Health Regulation No. 24/2022, IFHIMA recommendations, and HIPAA security principles such as minimum necessary disclosure, role‑based access control, audit trail, and informed consent. Gestalt design principles are applied to optimize perception, reduce cognitive load, and support safe handling of sensitive medical data. Usability was evaluated through heuristic assessment with 22 criteria and a 0–4 severity rating scale by three expert evaluators, yielding an average Severity Rating of 1.26, categorized as cosmetic problems without impact on core functionality or user satisfaction. The prototype therefore offers both operational effectiveness and regulation-aligned security, providing a reference framework for health informatics in designing medical information release systems for highly regulated healthcare environments.]]>
