Healthcare interoperability
Healthcare interoperability solutions that make systems talk
Getting your product to talk to hospital EHRs, payers, and labs is where healthcare projects stall. We engineer healthcare interoperability on HL7 and FHIR so the right data moves securely and in real time, and your team spends less time fighting integrations and more time shipping.
The problem
Why healthcare integrations stall
Every hospital runs a different EHR, the lab still sends HL7 v2, the payer speaks its own dialect, and each connection built by hand is slow, brittle, and expensive to keep alive. Add the EHR vendors' own approval steps and the risk that one misread field exposes patient data, and a project that should take weeks turns into a program that drags for quarters.
That is what healthcare interoperability solves: different systems exchanging data and actually using it, on shared standards instead of custom glue. Done right it means faster launches, cleaner data, and fewer moving parts to maintain, and it keeps you ready for the regulations pushing the industry toward open data exchange, such as the CMS interoperability rules and TEFCA.
Capabilities
Interoperability solutions we build
EHR and EMR integration
Connect Epic, Oracle Health (Cerner), athenahealth, and more using HL7 v2 and FHIR, with real-time, bidirectional data flow instead of overnight batch files.
Health information exchange and data integration
Aggregate patient data from many sources into one clean, current record, with healthcare data integration pipelines that normalize and de-duplicate as they go.
FHIR APIs and SMART on FHIR
Build FHIR R4 APIs and SMART on FHIR app launches so partners and internal teams read and write data through a modern, documented interface.
Payer and provider data exchange
Move eligibility, claims, and clinical data between providers and payers, with interoperability solutions for payers that meet regulatory data-sharing rules.
Interface engines and legacy integration
Design, migrate, and maintain interfaces on Mirth Connect and Rhapsody, connecting legacy systems that still run critical operations.
Patient identity and master data
Match and merge records across systems with master data management and patient identity matching, so one person is not three conflicting charts.
Systems we connect
The platforms you already run
We integrate the systems at the center of US healthcare, so interoperability is built on the platforms your teams use every day.
Epic EHR integration
FHIR, HL7, scheduling, orders, and SMART on FHIR.
→Oracle Health (Cerner) integration
Clinical and administrative data, both directions.
→athenahealth and eClinicalWorks
Practice and clinical data via modern APIs.
→Healthcare RCM and eligibility
Revenue cycle, claims, and real-time eligibility.
→Standards and compliance
Built on the standards, secured for HIPAA
We work to the healthcare interoperability standards buyers and regulators expect, and we treat security as part of the design, not an afterthought. Data is encrypted in transit and at rest, access is scoped and audited, and every interface is validated against the spec before it goes live.
How we work
How we deliver interoperability
Assess
We map your systems, data, and the standards each one speaks, then define exactly what needs to flow where.
Map
We model the data, align it to FHIR and HL7, and design the interfaces, identity matching, and error handling.
Build
We build and connect the integrations on your platforms and interface engines, with security and logging built in.
Validate
We test against the spec and real data, then monitor in production so the connection stays reliable as systems change.
Proof
Interoperability in action
Real projects where connected, standards-based data changed the outcome.
Testimonials
What our clients say
Technical expertise meets real adaptability
I am always impressed with Tark and their combination of technical expertise and exceptional adaptability. Their ability to understand complex requirements, execute projects efficiently, and consistently deliver high-quality results was impressive. Once requirements are communicated, execution proceeds smoothly with minimal oversight, and we have consistently been able to rely on them to deliver within the projected timeline. They are highly flexible and always willing to make adjustments to accommodate our custom use cases and unique situations. That willingness to tailor solutions showed a deep commitment to meeting our needs. Their proactive communication and seamless collaboration further set them apart, making them a trusted and reliable partner.
Healthcare company, Baltimore Verified on Clutch
10x growth, and we still rely on them
Tark evaluated our existing product and delivered a modernization roadmap they executed over the following years. The product has grown 10x in features and capabilities since our initial engagement, with exceptional quality, clean code, and a professional UI. It now has minimal production bugs and is incredibly fast, which makes it easy to sell to prospective customers. They deliver consistently on time and have shown extreme flexibility when priorities change. They are very accommodating, but never hesitate to raise concerns when a process could introduce risk, and that collaborative nature makes them ideal to work with. Tark is available 24/7 for production issues and has been trustworthy and reliable. I could not give them a higher recommendation.
Owner, JPOS Verified on Clutch
Seven years, still a clear exception
Our company has teamed up with Tark for almost seven years to collaborate on a variety of projects. They are exceptionally capable at understanding not only the business requirements, but the business itself. Beyond delivering functional software, they have consistently prioritized performance, user experience, and keeping our technology stack current, and we have been able to rely on their architectural recommendations. In our experience, most firms we have engaged with have struggled to balance requirements, deadlines, performance, and usability. Tark is a clear exception.
7-year partnership
Who we build for
Teams we help connect
FAQ
Healthcare interoperability, answered
How long does a healthcare integration take, and what drives the cost?
It depends on the systems and data. A focused, single-system FHIR interface can go live in weeks; a multi-system exchange with patient matching is a larger program. Cost tracks the number of systems, the standards involved, and how clean your data is. We scope it precisely in a short assessment first, so you get a real number instead of a guess.
Do we need Epic's or Cerner's approval to connect?
Usually, yes. Connecting to Epic or Oracle Health (Cerner) means working within their vendor and developer programs and credentialing. We handle that technical side within their programs, so their requirements are planned for up front rather than derailing your timeline.
Will connecting to our EHR disrupt the systems clinicians use every day?
No. We connect through supported interfaces and test against non-production environments first, so the live systems your teams rely on keep running while we build and validate the integration.
How do you keep patient data secure and HIPAA compliant?
We encrypt data in transit and at rest, scope and audit every access, and design each interface to meet HIPAA and your security requirements from the start. Security is part of the build, not a step bolted on at the end.
Our data lives in several systems. Can you give us one current view of a patient?
Yes. We aggregate data across your EHRs, labs, and apps and use patient identity matching to resolve the same person between them, so you get one current, de-duplicated record instead of conflicting charts.
What happens when an EHR upgrades or a standard changes, who maintains it?
EHRs upgrade and standards evolve, so we build interfaces to be monitored and maintained, and we can keep them healthy in production. You are not left with a brittle connection that breaks the next time a system changes.
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