HIPAA-Compliant Telehealth Infrastructure
Engineered an end-to-end encrypted WebRTC consultation platform with real-time HL7 FHIR EHR synchronization, supporting 15,000 concurrent patient video visits.
Key Takeaways
- WebRTC Selective Forwarding Units (Mediasoup) with SRTP end-to-end encryption delivered zero-intermediary video security.
- Bidirectional HL7 FHIR R4 integration synchronized patient charts, clinical notes, and ICD-10 codes into Epic without manual transcription.
- Ambient on-device documentation reduced physician post-visit charting time from 12 minutes to 3 minutes per encounter.
The Challenge
A healthcare system operating 120+ regional clinics needed to scale telehealth consultations during peak demand. Their existing commercial video vendor lacked direct electronic health record (EHR) integration, forcing clinicians to spend 12 minutes per encounter manually copying clinical notes into Epic.
The platform had to support 15,000 simultaneous video sessions with strict HIPAA and state medical board compliance while eliminating packet interception risks.
Architecture & Technical Approach
- Secure WebRTC Mesh: Built on Mediasoup Selective Forwarding Units (SFUs) running in AWS GovCloud. Media streams are encrypted via DTLS-SRTP, preventing intermediate packet decryption.
- HL7 FHIR R4 Bridge: Automatically pulls patient medication histories and active problem lists prior to appointments and writes signed SOAP notes back to Epic.
- On-Device Ambient Scribe: Audio processing runs locally on the clinician's machine to generate draft encounter notes without transmitting raw audio to third-party clouds.
Quantitative Benchmarks & Results
| System Parameter | Legacy Vendor Stack | Magnence Telehealth Core | Performance Impact |
|---|---|---|---|
| Concurrent Video Session Limit | 500 Sessions | 15,000+ Sessions | 30x Scalability |
| Clinician Documentation Time | 12.0 min/visit | 3.2 min/visit | 73.3% Time Saved |
| Patient Connection Drop Rate | 4.8% | 0.2% | 24x Reliability |
| Appointment Wait Time (Specialist) | 14 Days (In-Person) | 2 Days (Telehealth) | 85.7% Acceleration |
Production Reliability & Lessons Learned
Active-active deployment across two AWS GovCloud regions with Redis session state replication allowed seamless session reconnection even during regional ISP degradation.