EHR integration company for healthcare software teams
We are the EHR integration company healthcare software teams bring in when a customer asks "do you integrate with our EHR?" We build and run the connection to Epic, Oracle Health, athenahealth, eClinicalWorks, NextGen, MEDITECH, Veradigm and Practice Fusion over FHIR R4, HL7 v2, X12 and C-CDA, and we sign BAAs.
For digital health companies, healthcare SaaS vendors, payers and provider groups that need EHR data inside their own product.
The short answer
EHR integration services connect your application to the electronic health record your customer already runs, so patient demographics, encounters, orders, results, notes and claims move without re-typing. A complete engagement covers five things: choosing the access route for each EHR (vendor FHIR API, HL7 v2 interface, X12 transaction or an aggregator), getting registered in the vendor's developer program, mapping the data to your product model with standard codes (LOINC, SNOMED CT, RxNorm, ICD-10-CM, CPT), testing in the vendor sandbox and the customer's test environment, and running the interface in production with alerting and reprocessing. EMR integration is the same work; EMR is the older term for a single practice's chart, EHR the broader record.
Still deciding how one product should serve many EHRs? Read our multi-EHR integration architecture guide first, then come back here to scope the build.
Vendor by vendor
Every EHR exposes data differently. The API that works for one vendor is often read-only, partner-gated or absent on the next. This is how the main US platforms open up in 2026 and what usually sets the pace.
| EHR | API route | HL7 v2 and other feeds | Access program | What sets the pace |
|---|---|---|---|---|
| Epic | FHIR R4 (US Core, SMART App Launch 2.0, Bulk Data) listed on open.epic; Epic proprietary APIs for some write workflows | HL7 v2 ADT, ORM, ORU, SIU and MDM through each customer's Bridges interface team | open.epic registration, Epic Showroom listing when the product needs it, and each health system's approval of your client ID | The customer's Epic analyst queue and security review |
| Oracle Health (Cerner) | Millennium FHIR R4 APIs registered in the Oracle Health code console, with SMART launch | HL7 v2 through the customer's interface team and integration engine | Oracle Health developer program, then per-tenant enablement by the customer | Tenant activation and which FHIR write operations the site enables |
| athenahealth | athenaOne REST APIs plus certified FHIR R4 endpoints | HL7 v2 for selected lab, ADT and document flows | athenahealth Marketplace partner program and practice-level API enablement | Marketplace onboarding and the API subscription tier your workflow needs |
| eClinicalWorks | Certified FHIR R4 APIs for read and bulk export; partner APIs for write workflows | HL7 v2 interfaces configured by the eCW interface team | eCW partner agreements and practice-level interface approval | Interface scheduling on the practice's eCW instance |
| NextGen Healthcare | NextGen Enterprise and Office FHIR R4 APIs plus the NextGen Enterprise API | HL7 v2, often routed through Mirth Connect at the practice | NextGen partner program and per-practice activation | Which API product the practice licenses |
| MEDITECH | Expanse FHIR R4 (US Core) APIs, developed and tested in Greenfield Workspace | HL7 v2 is still the main route for Expanse, Client/Server and MAGIC hospitals | MEDITECH Greenfield Workspace and the hospital's interface team | Hospital interface team capacity and the MEDITECH platform generation |
| Veradigm (Allscripts) | Unity API and FHIR R4 for TouchWorks and Veradigm EHR | HL7 v2 for results, ADT and scheduling | Veradigm Developer Program and practice licensing | Unity API licensing for the specific practice |
| Practice Fusion | Certified FHIR R4 API, strongest for read access | C-CDA exports and limited interface options | Practice Fusion developer access and practice authorization | Write-back scope, which is narrower than on enterprise EHRs |
Vendor service pages: Epic integration · Oracle Health integration · athenahealth integration · eClinicalWorks integration · MEDITECH integration
How the data moves
Most real projects use two or three of these at once. A scheduling product might read FHIR Appointment and Slot, receive HL7 v2 SIU messages for changes, and send X12 270 eligibility checks.
| Method | What it carries | Best for | Watch for |
|---|---|---|---|
| FHIR R4 REST APIs | US Core resources such as Patient, Encounter, Observation, Condition, MedicationRequest, DocumentReference | Apps that read or write on demand, SMART on FHIR launch inside the EHR | Write support varies by vendor and site; rate limits and scopes |
| HL7 v2 messages | ADT A01/A04/A08, ORM^O01, ORU^R01, SIU^S12, MDM^T02, DFT^P03 | Real-time hospital events, lab and radiology results, charges | Site-specific Z-segments and field use; interface engine needed |
| X12 5010 EDI | 270/271 eligibility, 276/277 claim status, 278 prior auth, 837P/I claims, 835 remittance | Revenue cycle and payer workflows next to the EHR | Clearinghouse enrollment lead times and payer companion guides |
| C-CDA R2.1 documents | CCD, Discharge Summary, Referral Note over Direct, XDS or Carequality and CommonWell | Transitions of care and record exchange with other organizations | Parsing narrative sections and de-duplicating repeated documents |
| Bulk FHIR ($export) | NDJSON files of whole patient groups under SMART Backend Services | Analytics, population health, payer data, migration | Export windows, group definitions and incremental loads |
| Integration platforms | Normalized APIs over many EHRs from vendors such as Redox, Health Gorilla or Particle Health | Reaching many sites fast when per-transaction cost is acceptable | Per-connection fees, data coverage per EHR and exit plan |
The HL7 v2 vs FHIR choice is rarely either-or. Certified EHRs must expose FHIR R4 under the ONC (g)(10) criterion, while most hospital event feeds still run on HL7 v2.
Your starting point
Sales closed a health system or group practice and go-live depends on reading its EHR data or writing back into it. We confirm the exact EHR, version and enabled interfaces, then build to that customer's environment.
The next five customers run three different EHRs. We build one internal data model with an adapter per vendor, so the second Epic site is configuration, not a rebuild.
Messages drop, patients mismatch or nobody knows why a result never arrived. We inventory the interfaces, add monitoring and reprocessing, and fix the root causes before extending anything.
Buyer decision
The right answer depends on how many EHRs you must reach, how deep the workflow goes and who will run the interfaces after launch.
| Option | Works well when | Where it strains | Who runs it after go-live |
|---|---|---|---|
| In-house team | One EHR, deep product-specific workflow, and engineers who already know FHIR and HL7 v2 | Hiring integration specialists; vendor programs and customer IT teams slow the first launch | Your team |
| Integration platform or aggregator | Many sites, read-heavy use cases, speed matters more than unit cost | Per-connection fees at scale, gaps in write-back and vendor-specific data | The platform, with your team on escalations |
| EHR integration company (Nirmitee) | You need a production connection now and want to own the code and mappings afterwards | Needs a clear internal product owner for workflow decisions | Us under a support agreement, or your team after handover |
| Hybrid | Platform for breadth, direct FHIR or HL7 v2 for your deepest workflows | Two integration patterns to monitor | Shared, with one runbook |
Who owns what
Adapters, FHIR clients and SMART launch, HL7 v2 channels, X12 transaction handling, data mapping, identity matching, error queues, dashboards and runbooks.
EHR access, interface team time, the approval of your client ID or interface request, test patients and clinical sign-off on workflows.
Developer program terms, which APIs and write operations exist, marketplace listing reviews and any vendor fees.
Clinical workflow decisions, what users see, and consent and data-use terms with your customers.
What you keep
Workflow, source and target systems, message and resource list, trigger events and error handling, reviewed by your team and the customer.
Field-level mapping with code systems (LOINC, SNOMED CT, RxNorm, ICD-10-CM, CPT), transforms and test cases.
FHIR clients, SMART on FHIR launch, HL7 v2 channels or X12 handlers in your repository or on Interoply, our integration platform.
Sandbox and customer test-environment results, including negative cases, duplicates and corrections.
Cutover steps, rollback criteria, monitoring thresholds, alert routing and reprocessing procedures.
Documentation and knowledge transfer, or ongoing monitoring under a support agreement.
Delivery phases
Engineering is rarely the slowest part. Customer access, vendor programs and interface team queues usually set the date, so we plan those first.
1 to 2 weeks
3 to 6 weeks for a read-focused FHIR or HL7 v2 flow
2 to 6 weeks, set mostly by the customer's IT team
1 to 2 weeks, then steady-state monitoring
Write-back into the chart, a first Epic Showroom listing or a new clearinghouse enrollment typically adds weeks to months on the vendor side.
Budgeting
We quote after discovery because these factors change the effort more than the choice of vendor does.
Each new vendor needs an adapter; each new site needs configuration, testing and go-live support.
Writing orders, notes or results into the chart needs more validation, clinical sign-off and often partner-level API access.
FHIR alone is lighter than FHIR plus HL7 v2 plus X12. Each method adds its own testing and monitoring.
Real-time feeds, bulk backfills and historical migration change the storage, throughput and reconciliation work.
Marketplace fees, security questionnaires and interface team availability sit outside our code but shape the plan.
A handover to your team costs less upfront; a managed service with monitoring and on-call support costs less to operate.
Delivered work
Client names are withheld; each is a real engagement. Our open-source work is public on GitHub.
One SMART on FHIR application launched and read patient data from the Epic and Oracle Health developer sandboxes in the same session, with vendor-specific scope handling.
Hardened an inherited clearinghouse integration for a behavioral health EHR: claim validation, 999 and 277CA acknowledgement handling and 835 remittance reconciliation.
A referral and tumour-board exchange across a regional hospital network, where every record stays at its source hospital and only the agreed case data moves.
A clinic record that captures readings from connected devices offline and reconciles with the central record when the network returns.
Our headless EHR passed 47 of 47 ONC (g)(10) SMART App Launch tests in Inferno on 11 June 2026, so we test integrations against the same criteria certified EHRs meet.
Our team has built more than 350 interfaces on Mirth Connect, covering ADT, orders, results, documents and charges between EHRs, labs and products.
EHR integration services connect a healthcare application to an electronic health record so data moves automatically in one or both directions. The work covers choosing the access route (FHIR API, HL7 v2 interface, X12 transaction or an aggregator), vendor program registration, data mapping, testing in sandbox and customer environments, go-live and ongoing monitoring.
The engineering is the same. EMR usually means one practice's digital chart and EHR the broader record shared across organizations, so buyers use both words for the same project. We scope by the actual product, such as Epic, athenaOne or eClinicalWorks, and the data you need.
Cost depends on the number of EHRs and customer sites, read-only versus write-back, the method mix (FHIR, HL7 v2, X12), data volume, vendor program fees and the support model after go-live. We give a fixed scope and estimate after a short discovery rather than a list price, because those factors move the effort more than the vendor name.
A read-focused FHIR or HL7 v2 integration with one EHR typically takes 6 to 12 weeks from discovery to production, most of it set by customer access and test environments. Write-back, a first marketplace listing or a new clearinghouse enrollment usually adds more time on the vendor side.
Epic, Oracle Health (Cerner), athenahealth, eClinicalWorks, NextGen, MEDITECH, Veradigm (Allscripts) and Practice Fusion, plus specialty and open-source EHRs that support FHIR R4 or HL7 v2. We confirm the exact version and enabled interfaces for each customer before committing to a date.
Use FHIR R4 when your app reads or writes on demand or launches inside the EHR with SMART on FHIR. Use HL7 v2 when you need real-time hospital events such as admissions, orders and results. Many products need both, and we design one internal model so the method does not leak into your code.
EMR API integration means connecting to the EHR through the vendor's published APIs, usually certified FHIR R4 endpoints plus proprietary REST APIs, instead of file drops or screen scraping. It needs a registered app, OAuth 2.0 scopes through SMART App Launch, and the customer's approval to connect to their instance.
Not always. Many read-only FHIR use cases only need open.epic registration and customer approval of your client ID. Marketplace programs matter when you need proprietary or write APIs, or when customers expect a listed app. We map which programs your workflow actually requires.
Platforms reach many EHRs quickly and suit read-heavy use cases. Direct FHIR or HL7 v2 connections give more control, deeper write-back and lower unit cost at scale. Many teams run a hybrid. We build on either and can run your connections on Interoply, our integration platform.
Yes, where the EHR and the customer allow it. Common write-backs are clinical notes as DocumentReference, results over HL7 v2 ORU, appointments, and charges over DFT. Write access usually needs partner-level API rights and clinical sign-off, so we confirm it in discovery.
We sign a Business Associate Agreement, and Nirmitee is ISO 27001:2022 certified. Integrations use least-privilege OAuth scopes, encryption in transit and at rest, audit logging of every message, and synthetic data in development. We complete customer security questionnaires as part of the plan.
We hand over code, mappings and runbooks to your team, or monitor the interfaces for you with alerting, reprocessing of failed messages and updates when the EHR vendor changes an API or a customer upgrades.
Start the integration
Share the EHR, the workflow and the data you need. We reply with the access route, the dependencies on the customer side and a realistic go-live path.
A product overview and a de-identified example are enough. No patient records or credentials.
Primary specifications and vendor developer programs behind the methods on this page.
