Health Informatics Specialists design, implement, and optimize information systems that support clinical care, quality improvement, and health system performance. They translate clinical and administrative requirements into structured data models, documentation templates, and reporting frameworks. Core responsibilities include data quality assurance, terminology mapping, interoperability support, analytics development, and system configuration within electronic health record platforms and data warehouses. They apply standards for privacy, security, and governance while collaborating with clinicians, IT teams, and administrators. Work environments include hospitals, public health agencies, insurers, research institutions, and digital health companies. Global demand is rising due to digital transformation, population health management, and performance-based healthcare models.