Overview

The Appointment Service orchestrates the entire patient scheduling lifecycle from booking through check-in, managing provider calendars, and coordinating telehealth visits.

Key Features

Scheduling

• Multi-location support
• Provider availability management
• Appointment types and durations
• Recurring appointments
• Group appointments (classes, support groups)

Patient Self-Service

• Online booking via patient portal
• Real-time availability
• Appointment confirmation
• Rescheduling and cancellation
• Waitlist registration

Reminders & Notifications

• Automated SMS/email reminders (48 hours, 24 hours)
• Telehealth join links
• Pre-visit instructions
• Insurance verification reminders

Check-In

• Digital check-in (kiosk or mobile)
• Insurance card scanning
• Copay collection
• Forms completion
• Waiting room management

Technology Stack

• Runtime: Node.js 20
• Framework: NestJS
• Database: PostgreSQL
• Cache: Redis (availability slots)
• Messaging: Twilio (SMS), SendGrid (email)
• Video: Zoom Healthcare API / Doxy.me

Performance Metrics

• Appointment booking: < 3 seconds
• Availability queries: < 500ms
• No-show rate: Target < 5%
• Patient satisfaction: > 90%