The Patient Engagement & Health Questionnaire Solution with Clinical Process Support CHADIS has 100s of questionnaires and is the most complete web-based patient engagement & data collection system for comprehensive developmental/physical and mental health for all ages. It automatically assigns, requests, reminds, collects, scores, interprets, & graphs patient data, which makes it different from other solutions. CHADIS helps write your clinical notes, facilitates between-visit monitoring, referrals & tracking, MOC-4 credits, and population data collection.