How to Build Online Appointment Booking Across EHRs and Practice Management Systems with

Unified.to’s Healthcare API provides a single integration layer for showing real-time appointment availability and creating, updating, cancelling, and reading appointments across numerous EHR and practice-management systems. Practices authorize their own systems through a connection ID, after which applications can retrieve clinicians, locations, and available slots using standardized Slot and Appointment objects despite differences in each platform’s scheduling models and required booking fields. Developers should display only free slots, submit all relevant slot and patient information when booking, verify integration-specific requirements through a capability matrix, and ensure patients already exist in the practice system before creating appointments. Rescheduling generally updates appointment times, while cancellation may require either a status update or deletion depending on the platform. Because availability can change between retrieval and booking, failed booking attempts should be treated as unavailable slots and followed by refreshed calendar data. Systems without slot support may return a 501 response, requiring a request-a-time workflow instead, while webhooks, incremental updates, or scheduled polling can keep calendars current. Appointments are written directly to the practice’s system in real time, and Unified.to states that it does not retain patient records at rest.

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