ELLKAY
ELLKAY is a healthcare data interoperability and data-management company that connects disparate health IT systems so clinical and financial data can move where it is needed. Its LKOpera, LKOrbit, and LKOasis product lines provide interface-engine integration, orders and results, payer data retrieval, network/lab connectivity, and data archiving/migration across 750+ EMR/PM systems, 400+ hospitals, 58k+ practices, and 725+ laboratories. For developers, ELLKAY exposes the LKCloud platform: a single-endpoint Interop API (proprietary LK* operations) and a full HL7 FHIR R4 RESTful API, both authenticated with OAuth 2.0 against the LKIdentity authorization server and routed with a SiteServiceKey.
ELLKAY publishes 42 API contracts indexed on the APIs.io network, including Account API, Appointment API, Binary API, and 39 more. Tagged areas include Company, Healthcare, Interoperability, FHIR, and HL7.
The ELLKAY catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
ELLKAY’s developer surface includes documentation, API reference, authentication, changelog, engineering blog, support, sandbox, and 22 more developer resources.
Kin Score
Standards implemented 1
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 42
Individual APIs this provider publishes, each with its own machine-readable definition.
LKCloud Interop API
Single-endpoint healthcare interoperability API exposing proprietary LK* operations (appointments, patient bridge/search, documents, charges, patient balance, master lists) that...
LKCloud FHIR R4 API
HL7 FHIR R4 RESTful API (read/search/create/update/delete across R4 resources) over the ELLKAY interoperability platform, with a published CapabilityStatement. OAuth 2.0 Bearer ...
ELLKAY Account API
The Account API from ELLKAY — 2 operation(s) for account.
ELLKAY Appointment API
The Appointment API from ELLKAY — 2 operation(s) for appointment.
ELLKAY Binary API
The Binary API from ELLKAY — 1 operation(s) for binary.
ELLKAY Clinical Impression API
The ClinicalImpression API from ELLKAY — 2 operation(s) for clinicalimpression.
ELLKAY Communication API
The Communication API from ELLKAY — 2 operation(s) for communication.
ELLKAY Communication Request API
The CommunicationRequest API from ELLKAY — 2 operation(s) for communicationrequest.
ELLKAY Condition API
The Condition API from ELLKAY — 2 operation(s) for condition.
ELLKAY Coverage API
The Coverage API from ELLKAY — 2 operation(s) for coverage.
ELLKAY Diagnostic Report API
The DiagnosticReport API from ELLKAY — 2 operation(s) for diagnosticreport.
ELLKAY Encounter API
The Encounter API from ELLKAY — 2 operation(s) for encounter.
ELLKAY Family Member History API
The FamilyMemberHistory API from ELLKAY — 2 operation(s) for familymemberhistory.
ELLKAY Immunization API
The Immunization API from ELLKAY — 2 operation(s) for immunization.
ELLKAY LK Appointments API
Ellkay Appointment endpoints
ELLKAY LK Bridge API
Ellkay Bridge
ELLKAY LK Charges API
Charge details
ELLKAY LK Documents API
LKDocuments endpoints
ELLKAY LK Master List API
Master List.
ELLKAY LK Patient Balance API
Load patient's balances. Allows patients to apply payments.
ELLKAY LK Patient Data Link API
PatientDataLink endpoint
ELLKAY Location API
The Location API from ELLKAY — 2 operation(s) for location.
ELLKAY Medication API
The Medication API from ELLKAY — 2 operation(s) for medication.
ELLKAY Medication Statement API
The MedicationStatement API from ELLKAY — 2 operation(s) for medicationstatement.
ELLKAY Metadata API
The Metadata API from ELLKAY — 1 operation(s) for metadata.
ELLKAY Observation API
The Observation API from ELLKAY — 2 operation(s) for observation.
ELLKAY Operations API
The Operations API from ELLKAY — 1 operation(s) for operations.
ELLKAY Organization API
The Organization API from ELLKAY — 2 operation(s) for organization.
ELLKAY Patient API
The Patient API from ELLKAY — 2 operation(s) for patient.
ELLKAY Person API
The Person API from ELLKAY — 2 operation(s) for person.
ELLKAY Practitioner API
The Practitioner API from ELLKAY — 2 operation(s) for practitioner.
ELLKAY Procedure API
The Procedure API from ELLKAY — 2 operation(s) for procedure.
ELLKAY Questionnaire API
The Questionnaire API from ELLKAY — 2 operation(s) for questionnaire.
ELLKAY Questionnaire Response API
The QuestionnaireResponse API from ELLKAY — 2 operation(s) for questionnaireresponse.
ELLKAY Related Person API
The RelatedPerson API from ELLKAY — 2 operation(s) for relatedperson.
ELLKAY Service Request API
The ServiceRequest API from ELLKAY — 2 operation(s) for servicerequest.
ELLKAY Slot API
The Slot API from ELLKAY — 2 operation(s) for slot.
ELLKAY Update Patient API
UpdatePatient endpoint
ELLKAY Allergy Intolerance API
The Allergy Intolerance API from ELLKAY — 2 operation(s) for allergy intolerance.
ELLKAY Document Reference API
The Document Reference API from ELLKAY — 2 operation(s) for document reference.
ELLKAY Insurance Plan API
The Insurance Plan API from ELLKAY — 2 operation(s) for insurance plan.
ELLKAY Medication Request API
The Medication Request API from ELLKAY — 2 operation(s) for medication request.
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Rate Limits 1
Documented rate limits and quota policies.
Ellkay Rate Limits
RATE LIMITSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Ellkay Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
ELLKAY API Rules
SPECTRALJSON Schema 12
Standalone JSON Schema definitions for this provider's data models.
Account
JSON SCHEMAAllergyIntolerance
JSON SCHEMAAppointment
JSON SCHEMABinary
JSON SCHEMABundle
JSON SCHEMACapabilityStatement
JSON SCHEMAScroll for all 12
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 3
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 9
Pagination, idempotency, versioning, errors, and events
Scroll for all 9
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 3
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
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