California's healthcare ecosystem is the most complex and diverse in the United States. Major integrated delivery networks, academic medical centers, regional hospitals, large multi-specialty physician groups, ambulatory surgery centers, independent laboratories, imaging centers, pharmacy networks, health plans, and public health agencies all exchange clinical data with each other — and with an ever-growing number of digital health applications and platforms. The result is a healthcare integration landscape of extraordinary complexity.\n\nZerosums Technology provides comprehensive healthcare integration services for California organizations across this entire spectrum. We are platform-agnostic, with deep expertise in all of the major integration engines and standards used in California: Mirth Connect (NextGen Connect), InterSystems HealthShare and IRIS, Infor Cloverleaf, Rhapsody, HL7 v2.x, HL7 FHIR R4, and the California-specific interoperability frameworks including Cal INDEX, LANES, and other regional HIEs.\n\nFor California health systems managing mature HL7 v2 integration environments alongside new FHIR API requirements, we design hybrid integration architectures that preserve existing investments while building toward the FHIR-first future mandated by federal interoperability rules. We help California organizations satisfy the 21st Century Cures Act FHIR API requirements without disrupting the hundreds of HL7 v2 interfaces that continue to power critical clinical workflows.\n\nFor California's growing digital health sector — health technology companies, telehealth platforms, and population health analytics companies — we build FHIR-based integration pipelines that connect their products to Epic, Cerner, and other EHR platforms deployed by California health systems. We navigate the complex EHR vendor app marketplace processes, implement required security standards, and build scalable integration architectures that grow with these companies' customer bases.