HomeHealth TechFHIR Integration

FHIR Integration & API Development

HL7 FHIR is the standard modern healthcare data exchange is built on. We design, build, and maintain FHIR R4/R5 APIs, SMART on FHIR applications, and EHR integrations that connect your product to Epic, Oracle Health, athenahealth, and the wider healthcare ecosystem — securely, conformantly, and in production.

R4 / R5
FHIR versions we implement
US Core
Profile conformance for US interoperability
SMART
on FHIR app launch and OAuth 2.0 authorization
HL7 v2
Legacy interfaces translated to FHIR

One Standard for Connected Healthcare

FHIR (Fast Healthcare Interoperability Resources) turns clinical data into well-defined, web-native resources — Patient, Encounter, Observation, MedicationRequest — accessible over REST APIs. Since the 21st Century Cures Act made standardized APIs mandatory for certified EHRs, FHIR is no longer optional: it is how healthcare software talks to the rest of the ecosystem.

FHIR API Development

We build and expose conformant FHIR R4 REST APIs on top of your existing product, EMR, or legacy database — using facade architectures, HAPI FHIR, or Firely so you become interoperable without re-platforming.

EHR Connectivity

We integrate your application with the FHIR endpoints of Epic, Oracle Health (Cerner), athenahealth, and MEDITECH — reading and writing demographics, encounters, medications, results, and documents through the vendors' app programs.

SMART on FHIR Applications

Clinician- and patient-facing apps that launch inside the EHR with SMART launch context and OAuth 2.0 scopes — single sign-on, correct patient context, and app-gallery distribution to health systems.

OFF-THE-SHELF VS. CUSTOM

Off-the-Shelf FHIR Tools vs. a Built-for-You Integration

Turnkey FHIR gateways get you a conformant endpoint fast — but they rarely survive contact with a real vendor sandbox, a messy legacy feed, or an app-review cycle. Here's where a custom integration earns its cost.

Legacy HL7 v2 data

Off-the-Shelf

Often dropped, or requires a separate paid module to bridge v2 feeds into FHIR

Custom-Built with Woltrio

HL7 v2 and C-CDA mapped into FHIR resources as part of the same integration, so nothing gets silently lost

Vendor-specific quirks (Epic, Oracle Health…)

Off-the-Shelf

Generic mapping breaks on vendor-specific extensions, rate limits, and app-review requirements

Custom-Built with Woltrio

Built and tested against the real vendor sandbox, including app registration and review — not just the base spec

Clinical meaning

Off-the-Shelf

Maps fields structurally without understanding what an Encounter or MedicationStatement means clinically

Custom-Built with Woltrio

Engineers who know the clinical context, so mappings preserve meaning, not just JSON shape

Ongoing monitoring

Off-the-Shelf

Black-box uptime dashboard, little visibility when a mapping silently breaks

Custom-Built with Woltrio

Health checks and alerting built for your specific data flows, plus a team that already knows the integration when something changes

Cost model

Off-the-Shelf

Recurring per-connection or per-call licensing that scales with your usage

Custom-Built with Woltrio

A one-time engineering investment you own outright, with support scoped to what you actually need

If your product needs to move real clinical data through real vendor endpoints — not just pass a conformance test — a built-for-you integration is what holds up in production.

Full-Spectrum FHIR Engineering

Interoperability doesn't end at a conformant endpoint. We cover the full lifecycle — mapping legacy formats, moving population-scale data, securing access, and keeping exchanges real-time.

FHIR R4/R5US CoreSMART on FHIROAuth 2.0 / OpenID ConnectCDS HooksHAPI FHIRFirely SDKBulk FHIR ($export)HL7 v2C-CDAInferno / TouchstoneX12 EDIIHE (XDS.b/PIX)TEFCA / USCDI v3
HIPAA Security & Privacy RuleBuilt in
21st Century Cures Act (Information Blocking)Addressed
TEFCA / USCDI v3Supported
SMART App Launch SecurityBuilt in

Translate ADT, ORU, and ORM feeds and C-CDA documents into FHIR resources so legacy interfaces and modern APIs coexist during your transition — no big-bang rewrite required.

THE BIGGER PICTURE

What We Integrate Around Your EHR

FHIR is the modern layer, but it rarely stands alone. A real interoperability project usually means bridging your EHR to payers, exchanges, labs, pharmacies, and patient-facing apps — each speaking its own protocol.

EHR / EMR

Epic · Oracle Health · athenahealth

X12 EDI · HL7

Clearing HouseHealth PlansRCM

IHE · DIRECT · Custom APIs

HIEHISP3rd-Party EHRsDMEs

HL7 FHIR / USCDI

Portals / AppsWearablesRegistries

HL7 · NCPDP · DICOM · IEEE

LISPharmacyRISVNA / PACSMed. (BLE) Devices

Why Digital Health Teams Choose Woltrio

FHIR projects fail on clinical nuance and vendor quirks, not on JSON. We bring both the standards depth and the production EHR integration experience to ship exchanges that hold up in the real world.

Clinical Data Fluency

Our engineers know what an Encounter, a ServiceRequest, and a MedicationStatement mean clinically — so mappings preserve meaning, not just structure.

Compliance Built In

HIPAA, the Cures Act API mandate, and information-blocking rules shape every architecture decision from day one — not as an afterthought before go-live.

Production Integration Experience

We've shipped integrations against certified vendor endpoints with their rate limits, app review processes, and version drift — and we build the monitoring that keeps them healthy.

Our FHIR Integration Delivery Process

  1. 01

    Use-Case & Data Discovery

    We define which clinical data needs to move, in which direction, and under whose authorization — and inventory the source systems, vendors, and standards involved.

  2. 02

    Architecture & Profile Selection

    We choose the right architecture — native FHIR server, facade, or integration engine — and pin the FHIR version, profiles, and implementation guides your exchange must conform to.

  3. 03

    Implementation & Mapping

    We build the APIs, apps, and mappings — with test fixtures for the messy real-world data that vendor sandboxes never show you.

  4. 04

    Conformance & Security Testing

    We validate against Inferno and Touchstone, exercise SMART launch and consent flows end to end, and load-test rate-limited vendor endpoints before anything touches production.

  5. 05

    Go-Live, Monitoring & Support

    We deploy with health checks, alerting, and dashboards for API traffic — and stay on for vendor version changes, app re-reviews, and new use cases.

Frequently
Asked Questions

Seeking basic information? Our FAQ section is a ready reckoner with precise answers to the most probable queries.

What is FHIR and why does it matter for our product?

FHIR (Fast Healthcare Interoperability Resources) is HL7's modern standard for exchanging healthcare data over REST APIs. US regulation now requires certified EHRs to expose standardized FHIR APIs, so it is the most reliable way for a digital health product to read and write clinical data — and increasingly a purchasing requirement from health systems.

Can you connect our application to Epic or Oracle Health?

Yes. We build integrations against Epic (including the Epic on FHIR program and app review), Oracle Health, athenahealth, and other vendor FHIR endpoints — handling app registration, OAuth configuration, sandbox testing, and production rollout with the health system.

Do we have to replace our existing HL7 v2 interfaces?

No. HL7 v2 remains the workhorse of hospital messaging. We typically run v2 and FHIR side by side, translating between them with an integration layer, so you modernize incrementally without breaking existing feeds.

How do you secure FHIR APIs?

With the SMART on FHIR security model: OAuth 2.0 and OpenID Connect for authorization and identity, granular SMART scopes for least-privilege access, TLS everywhere, and complete audit logging — aligned with HIPAA and 21st Century Cures Act requirements.

How long does a typical FHIR integration take?

A read-only integration against a single vendor sandbox can be live in a few weeks; bidirectional exchanges with app review, conformance testing, and health-system rollout typically take two to four months. The discovery phase gives you a concrete timeline before you commit.

What are the different types of healthcare interoperability?

Interoperability is usually described in four layers: foundational (data can move between systems at all), structural (the message format is standardized, like HL7 v2 or FHIR), semantic (the meaning of a code or field is preserved and understood the same way on both ends), and organizational (the policy, consent, and governance that let two organizations trust an exchange in the first place). FHIR mainly solves structural and semantic interoperability — governance and trust frameworks like TEFCA sit on top of it.

Do we need to run our own FHIR server?

Not always. If you're consuming data from EHR vendors, a facade or client-side integration is often enough. You need your own FHIR server when you're the one exposing data to others — for example, meeting the Cures Act patient-access requirement, participating in a Bulk FHIR data-sharing agreement, or acting as a source system inside a larger health information network.

Do we need to worry about TEFCA?

Not immediately for most digital health products — TEFCA governs nationwide exchange between larger networks (QHINs, health systems, and HIEs), not individual app-to-EHR integrations. But if your roadmap includes broad multi-organization data sharing, it's worth designing your FHIR APIs and USCDI data mapping so a TEFCA connection is a later addition, not a rebuild.

Ready to Build Your Healthcare Software.

Let's discuss your project requirements and build something that delivers real clinical and business value.

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