We connect the new system to your existing EHR (Epic, Cerner, Athenahealth, Meditech, or a smaller regional system), billing software (Kareo, AdvancedMD, DrChrono), scheduling tool (NexHealth, Acuity, or the scheduling module in your existing EHR), and third-party device feeds (CGM, BPM, pulse oximetry, connected scales). The integration approach is assessed per system during discovery: modern EHRs expose FHIR R4 APIs for bidirectional data exchange (patient demographics, appointments, clinical notes, results); older systems may require HL7 v2 message-based integration; scheduling systems typically have REST APIs with OAuth 2.0 authentication. No rip-and-replace: your staff continues using the systems they know, and the new platform adds capabilities on top of the existing stack without creating two parallel records for every patient. The integration is tested against a sandbox instance of your EHR before any production cutover, and the cutover is planned to avoid impacting clinical operations.