EHR / EMR Middleware

You can, but it's brittle and hard to scale. EHR APIs are rate-limited, inconsistently documented, and vendor-specific. Middleware abstracts this complexity, handles retries, caches responses, and makes it easy to support multiple EHR vendors without rewriting your application logic.

When properly architected, very little. We deploy middleware as serverless functions and add Redis caching for frequently requested data like patient demographics, so cached reads can return faster than a direct EHR API call.

We design middleware for high availability with automatic failover, health checks, and dead-letter queues for failed requests, plus circuit breakers that prevent cascading failures if the EHR itself becomes unresponsive. The design goal is that an outage delays requests rather than losing them: failed calls are queued and retried, not dropped.

Both, where the EHR allows it. Bidirectional middleware can write new appointments, update patient records, or submit clinical notes through the FHIR write scopes an EHR exposes. Write support varies by vendor and resource, and it requires additional security approvals from hospital IT.

For a single EHR vendor (e.g., Epic only), expect 6-10 weeks for production-ready middleware with authentication, caching, and error handling. Supporting multiple EHR vendors (Epic + Cerner + Athena) typically takes 12-16 weeks, depending on the complexity of the data model.

It can be built to HIPAA requirements (encryption, audit logging, role-based access): deployed on HIPAA-eligible AWS or GCP infrastructure, with all data encrypted in transit and at rest, audit logging for every API request, and no PHI kept in logs or cache layers longer than necessary for performance. We sign a Business Associate Agreement (BAA) before any PHI access: no one on our team sees protected health information until it is executed.

If the EHR exposes any interface — FHIR, HL7 v2, or a proprietary REST endpoint — middleware can be built around it. As a last resort, direct database replication with read-only access to the EHR's data warehouse is an option where the vendor and your contract allow it.

Yes. EHR vendors frequently deprecate API endpoints, change authentication flows, or introduce breaking changes. We track these announcements and patch the middleware ahead of published deprecation dates — this is what the monthly support retainer covers.