FHIR API Integration
FHIR R4 APIs, SMART on FHIR apps, and Bulk FHIR export.
Explore FHIR API IntegrationConnect with every major EHR and EMR platform — Epic, Oracle Health, MEDITECH, eClinicalWorks, NextGen, athenahealth, and the Allscripts / Veradigm / Altera lineage. We build HL7 v2 interfaces, FHIR R4 APIs, and custom integrations that keep patient data flowing securely across your organization.
From HL7 v2 interface development to FHIR R4 API programs, our EHR integration services cover the full spectrum of healthcare data exchange. Pick a capability to see what the work looks like.
Sometimes the standards-compliant path isn't enough — vendor-specific auth flows, proprietary API wrappers, custom transformation logic, or real-time event streaming. We build the software engineering layer that stitches non-standard systems into your clinical stack.
We design and build FHIR R4 APIs that connect EHRs to downstream apps, patient portals, and third-party platforms. US Core profile-conformant, tested against full conformance suites, and certified through Epic App Orchard, Oracle Code, and athenahealth Marketplace review pipelines.
Most EHR integrations still land on HL7 v2 — ADT admit/discharge feeds, ORM orders, ORU results, SIU scheduling, MDM documents. We build production-grade interfaces on Mirth Connect, handle vendor-specific Z-segments, and manage MLLP transport, ACK/NAK retries, and message transformation at scale.
SMART on FHIR apps launch directly inside Epic Hyperspace, Oracle Health, and other SMART-enabled platforms — giving clinicians embedded access to decision support, patient engagement, or third-party data without leaving their workflow. OAuth + PKCE, launch context, standalone and EHR-launch modes.
EHR migrations require meticulous planning, validation, and cutover execution. We handle legacy extraction, data cleansing, terminology mapping, and parallel testing — then run 24/7 go-live support with interface validation and rapid issue resolution so clinical operations never miss a beat.
After go-live, we provide continuous monitoring, proactive maintenance, and rapid incident response. Interface health dashboards, error-queue triage, on-call coverage, capacity planning, and SLA-backed uptime so your team can focus on clinical outcomes, not integration firefighting.
Every EHR integration uses one (or more) of three communication paradigms. Each has its own strengths, pitfalls, and tooling. Pick a paradigm to see how we build it.
Nearly every EHR integration lands on HL7 v2 eventually. ADT feeds, ORM orders, ORU results, SIU scheduling, DFT financial — all flowing through MLLP-framed pipe-delimited messages over persistent TCP connections. We engineer the interface engine, ACK/NAK handling, resend logic, and long-tail segment coverage that keeps these feeds alive 24/7.
FHIR inverts the integration model: instead of messages pushed to your queue, you make authenticated REST calls and get back JSON resources. Patient, Observation, MedicationRequest, Encounter, Condition — each a first-class URL. We build FHIR clients, FHIR servers, custom operations, Bulk Data exports, and the OAuth / SMART handshakes around them.
When milliseconds matter — clinical decision support fires at order-sign, a sepsis monitor alerts on a new vital, a registry ingests every discharge — polling doesn't cut it. We design event-driven topologies using FHIR Subscriptions, CDS Hooks, message brokers (Kafka, AWS EventBridge, GCP Pub/Sub), and webhook patterns that wire EHR events to downstream consumers in real time.
EHR Platforms
Hands-on integration experience with the platforms that power most of U.S. healthcare — plus any system that speaks HL7 or FHIR.
Acute care · academic
OrAcute care · federal
MtCommunity hospitals
eCAmbulatory · primary care
NxSpecialty · ambulatory
AtAmbulatory · cloud-native
VaAmbulatory · specialty
Don't see your EHR? We integrate with any electronic health record system, including:
Contact us about your EHRUnderstanding each EHR platform's integration capabilities helps you choose the right approach for your ehr data integration project.
| Feature | Epic | Oracle Health | MEDITECH | eClinicalWorks | NextGen | athenahealth |
|---|---|---|---|---|---|---|
| Market Segment | Large health systems | Large health systems | Community hospitals | Ambulatory / outpatient | Specialty practices | Ambulatory / cloud-first |
| FHIR R4 Support | Full (US Core) | Full (US Core) | Growing (Expanse) | Partial | Partial | Full (athenaOne) |
| HL7 v2 Support | Extensive | Extensive | Extensive | Standard | Standard | Limited |
| Open API Platform | Vendor Services / Showroom | Cerner Code | Greenfield Toolkit | healow Open Access | NextGen API | Marketplace API |
| Cloud-Native | Hybrid | Yes (Oracle Cloud) | Expanse (hosted) | Cloud available | Cloud available | Yes (cloud-native) |
| Integration Engine | Bridges / Cloverleaf | Open Engines | Any (Mirth common) | Any (Mirth common) | Any (Mirth common) | Native connectors |
| Primary Deployment | On-premise / hosted | On-premise / Oracle Cloud | On-premise / hosted | Cloud / hosted | On-premise / cloud | Cloud only |
A proven four-phase approach that reduces risk, accelerates delivery, and ensures every EMR integration meets production standards.
Evaluate your EHR environment, existing interfaces, and integration requirements to build a comprehensive roadmap.
Architecture planning, standards selection (HL7 v2, FHIR R4, or hybrid), and vendor certification alignment.
Interface development, end-to-end testing, vendor certification, and staging environment validation.
Go-live monitoring, production cutover, and ongoing managed services with SLA-backed uptime.
Building an Epic, Oracle Health, MEDITECH, or athenahealth integration? Let's scope your project.
Book a ConsultationThe high-leverage EHR integration patterns we deploy in production — operational mechanics that go beyond the conceptual frame, mapped to specific EHR vendors, integration standards, and the certification programs that gate production go-live.
Real-world EHR integrations — from multi-vendor ADT consolidation to SMART on FHIR patient portals to multi-EHR lab result routing.
A hospital system merging ADT feeds from three separate EHR platforms into a unified master patient index — normalizing patient identifiers, demographics, and encounter data across Epic, Oracle Health, and MEDITECH into a single source of truth. Outcome: 3 ADT feeds consolidated, sub-hour reconciliation lag, zero downstream identifier drift.
EHR integrations delivered for







EHR integration services connect electronic health record systems with other clinical, administrative, and third-party applications so that patient data flows securely between platforms. This includes building HL7 v2 interfaces for ADT, orders, and results messaging, developing FHIR R4 APIs for modern interoperability, and creating custom connectors for vendor-specific platforms like Epic, Oracle Health, and athenahealth. EHR integration services also encompass data migration during platform transitions, SMART on FHIR application development, and ongoing managed services to ensure interfaces remain reliable in production. At Saga IT, our EHR integration services cover the full lifecycle from assessment and architecture through build, certification, and long-term support.
EMR integration refers to connecting electronic medical record systems with other software applications to enable bidirectional data exchange. While EMR and EHR are often used interchangeably, EMR typically refers to a single practice's digital records, while EHR encompasses a broader, interoperable view of patient data across organizations. EMR integration commonly involves HL7 v2 message feeds for lab results, radiology orders, and patient demographics, as well as FHIR APIs for newer cloud-based data exchange. Successful EMR integration ensures that clinical staff have a complete picture of patient information without manual data entry or duplicate records. Saga IT provides EMR integration services for all major platforms including eClinicalWorks, NextGen, athenahealth, and MEDITECH.
EHR integration costs vary significantly based on scope, complexity, and the vendor platform involved. A single HL7 v2 interface between two systems might range from $15,000 to $50,000, while a comprehensive FHIR R4 API program with vendor certification, multiple endpoints, and SMART on FHIR applications can range from $100,000 to $500,000 or more. Factors that influence cost include the number of interfaces, data transformation complexity, vendor certification requirements, testing and validation scope, and whether ongoing managed services are included. Enterprise EHR migration projects involving Epic or Oracle Health typically represent the highest investment due to certification timelines and integration depth. Saga IT provides detailed cost estimates after an initial assessment of your specific EHR environment and integration requirements.
HL7 v2 and FHIR are both healthcare data exchange standards, but they serve different architectural patterns. HL7 v2 uses pipe-delimited messages (like ADT, ORM, and ORU) transmitted over TCP/MLLP connections and remains the dominant standard for real-time clinical messaging in most EHR environments. FHIR (Fast Healthcare Interoperability Resources) uses modern RESTful APIs with JSON or XML payloads, making it easier to integrate with web and mobile applications. Most EHR integration projects today use a hybrid approach — HL7 v2 for real-time clinical feeds and FHIR R4 for API-based data access, patient-facing applications, and regulatory compliance like CMS interoperability rules. Our integration engineers are certified in both standards and help organizations choose the right approach for each use case. Learn more on our dedicated HL7 integration and FHIR API development pages.
Timeline depends on the integration scope and vendor involved. A straightforward HL7 v2 ADT interface can be built and deployed in 4-6 weeks, while a comprehensive FHIR R4 API integration with vendor certification typically takes 3-6 months. Large-scale EHR data migration projects, such as transitioning from a legacy system to Epic or Oracle Health, often span 12-18 months including planning, build, testing, and phased go-live. Factors that extend timelines include vendor certification review cycles, security and compliance validation, and the number of downstream systems involved. Saga IT uses an iterative delivery approach, deploying interfaces in production incrementally rather than in a single big-bang cutover, which reduces risk and accelerates time to value.
Saga IT integrates with any electronic health record system. Our deepest expertise is in the six largest platforms in the United States — Epic, Oracle Health (Cerner), MEDITECH, eClinicalWorks, NextGen Healthcare, and athenahealth — but we also integrate with the Allscripts product lineage now split across Veradigm (Veradigm EHR, Practice Fusion) and Altera Digital Health (TouchWorks, Sunrise, Paragon), plus Greenway Health, DrChrono, ModMed, and many others. Beyond EHR platforms, we integrate with health information exchanges (HIEs), public health registries, ancillary systems like PACS and LIS, and payer platforms. Each vendor has unique APIs, certification requirements, and integration patterns — our team has hands-on experience across all of them. Visit our individual EHR integration pages to learn about platform-specific capabilities, or contact us to discuss your specific environment.
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Whether you need a single HL7 interface or a comprehensive EHR integration program, our team has the platform-specific expertise to deliver.
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