Healthcare integration is a core discipline at Zerosums Technologies — not a peripheral service. Our integration engineers have built HL7 interfaces, implemented FHIR APIs, managed InterSystems IRIS productions, developed Mirth Connect channels, and delivered Cloverleaf integrations for health systems, hospitals, payers, and digital health companies across the United States. Our HL7 practice covers the full v2.x message set — ADT, ORM, ORU, MDM, SIU, DFT, VXU, and more — across all major integration engines. We build interfaces from scratch, optimize poorly performing existing interfaces, migrate between integration engines, and provide managed support for production environments that need ongoing attention. Every interface we build is documented, tested against real payloads, and monitored after go-live. Our FHIR practice implements the modern interoperability standards that CMS interoperability rules, value-based care programs, and digital health platforms require. We build Patient Access APIs, Provider Directory APIs, SMART on FHIR applications, FHIR bulk data exports, and payer-to-provider exchange pipelines. We work with HAPI FHIR, Azure FHIR Service, Google Cloud Healthcare API, and the built-in FHIR capabilities of Epic, Cerner, and InterSystems IRIS. For organizations running InterSystems technology — IRIS for Health, HealthShare, or legacy Ensemble — we provide the full spectrum of consulting services: new implementations, production optimization, ObjectScript development, migration planning, and managed support. We have the depth to handle complex IRIS environments that most IT vendors cannot support.