MediChatApp is a HIPAA-compliant patient communication and workflow automation platform built for modern medical practices. It replaces phone calls with secure messaging, automates appointment reminders, manages digital intake and check-in, and integrates deeply with Greenway Intergy (HL7, FHIR, GAPI). Clinics use MediChatApp to reduce workload, cut no-shows, centralize communication, and deliver a smoother patient experience across all locations.