Checking API health…
APEX Nexus
Parker Apex's flagship clinical platform — the integrated EHR backbone powering api.parkerapex.com. FHIR R4, SMART OAuth, 355+ resource types, semantic queries, GPID identity, and 652+ production data endpoints.
652+
Data Endpoints
355+
FHIR Types
15
OpenAPI Specs
30+
Flask Modules
Platform Data Endpoints
Clinical, FHIR, identity, semantic, and exchange APIs on APEX Nexus — browse curated partner endpoints publicly or sign in for the full route catalog.
Clinical EHR
248+ routesPatients, encounters, medications, imaging, telehealth, trials, and administration.
FHIR R4 Interoperability
83+ routes355+ resource types, SMART on FHIR, bulk $export, subscriptions.
Identity & GPID
59+ routesGolden patient index, match/merge/split, Plexus IAM, and actor-scoped access.
Semantic Data Layer
12+ routesFederated queries, NL-to-SQL, cohort analytics, and purpose-of-use enforcement.
Exchange & Documents
76+ routesTEFCA QHIN, Beacon ingest, SMART Health Cards, and document intelligence.
Mobile & Patient Portal
26+ routesPulse PHR, provider mobile APIs, portal modules, and patient-facing workflows.
Routes by data domain
Clinical EHR
297+ routes
Identity & IAM
99+ routes
FHIR & Interop
85+ routes
Document Intelligence
63+ routes
Platform Ops
47+ routes
Mobile & Portal
46+ routes
Other Platform
15+ routes
Trusted by healthcare innovators
Enterprise-grade infrastructure powering the APEX ecosystem
Named reference customers are available to signed-in partners.
663+
Production API Routes
355+
FHIR Resource Types
gateway + lake / IG-projected; 37 first-class REST resources
99.95%
Platform Uptime SLA
5
Compliance Frameworks
Rate Limits & SLA
Per-product tiers, burst limits, uptime guarantees, and support response times.
| Product | Tier | Rate Limit | Burst | Uptime SLA | Support | P95 | Retention |
|---|---|---|---|---|---|---|---|
| APEX Nexus Platform | Enterprise | 10,000 req/min | 500 req/sec | 99.95% | 24×7 P1 · 1h response | < 450ms FHIR | 7 years clinical |
| FHIR Data Lake | Enterprise | 5,000 req/min | 200 req/sec | 99.95% | 24×7 P1 · 1h response | < 600ms search | Indefinite lake |
| Prime Wearables | Professional | 2,000 events/min | 100 req/sec | 99.9% | Business hours · 4h | < 350ms ingest | 3 years biometrics |
| Horizon Analytics | Professional | 500 queries/min | 50 req/sec | 99.9% | Business hours · 4h | < 2s semantic | Query logs 90d |
| Identity & GPID | Enterprise | 1,000 match/min | 50 req/sec | 99.95% | 24×7 P1 · 1h | < 180ms match | Audit 7 years |
| Beacon Ingest | Professional | 500 uploads/min | 30 req/sec | 99.9% | Business hours · 4h | < 5s finalize | Documents 7y |
| Velocity RCM | Professional | 1,000 claims/min | 40 req/sec | 99.9% | Business hours · 4h | < 800ms submit | Claims 7 years |
| Ledger & FedNow | Enterprise | 200 payments/min | 20 req/sec | 99.95% | 24×7 P1 · 1h | < 3s FedNow | Financial 7y |
| Pulse Mobile | Standard | 1,000 req/min | 50 req/sec | 99.9% | Business hours · 8h | < 300ms mobile | PHR lifetime |
| Apex Sightline | Professional | 2,000 FHIR req/min | 80 req/sec | 99.9% | Business hours · 4h | < 400ms exam | Vision 7 years |
| Apex Odonto | Professional | 2,000 FHIR req/min | 80 req/sec | 99.9% | Business hours · 4h | < 400ms chart | Dental 7 years |
| Catalyst Genomics | Professional | 200 variants/min | 20 req/sec | 99.9% | Business hours · 4h | < 1.2s variant | Genomics 25y |
| CMS Partners | Standard | 500 req/min | 30 req/sec | 99.9% | Business hours · 8h | < 250ms token | Partner audit 3y |
| TEFCA Gateway | Enterprise | 30 XCPD/min · 20 XCA/min | 10 req/sec | 99.95% | 24×7 P1 · 1h | < 2.5s XCA | Exchange audit 7y |
APEX Nexus Quick Start
From credentials to first FHIR read in four steps
Explore the platform
Review data domains, OpenAPI specs, and curated partner APIs.
2Get credentials
Apply as a partner, then issue scoped API keys or OAuth clients.
3First FHIR read
Fetch a Patient resource with SMART OAuth bearer token.
4OpenAPI contracts
Browse 13 machine-readable specs with Try-it-out.
Satellite Products
Specialty APIs that extend APEX Nexus — each product has its own OpenAPI contract, rate limits, and certification path on this portal.
Mobile & Clinical
Patient-facing apps, wearables, and precision medicine APIs
Specialty Clinical
Vertical EHR APIs for vision, dental, and specialty care lines
Data & Analytics
Longitudinal storage, semantic queries, and synthetic data
Revenue & Operations
Claims, payments, and document ingest pipelines
Identity & Trust
Global patient identity and enterprise IAM
OpenAPI Contracts
15 machine-readable specs · interactive Swagger Try-it-out
APEX Nexus Platform API
Flagship EHR — FHIR R4, SMART, mobile, semantic queries, GPID identity, bulk export.
FHIR Data Lake API
HAPI FHIR R4 longitudinal store — ingest, quality, lineage, GPID master, bulk export.
Beacon Ingest & SMART Health Cards
Document upload (PDF, FHIR), SMART Health Card verification, virus scanning.
Prime Wearables API
Wearable vendor integration, FHIR observation normalization, device provenance, readiness alerts.
CMS Health Tech Ecosystem API
CMS partner management, SDK catalog, regulatory compliance APIs.
Horizon Population Health API
Natural language to SQL, semantic querying, risk stratification scoring.
Horizon Identity & GPID API
Identity matching, GPID resolution, merge/split operations, Plexus IAM management.
Catalyst Genomics API
Genomic variants, biomarkers, bioinformatics analysis, and pipeline tracking.
Velocity RCM API
Revenue cycle management — claims, denials, AR aging, Stedi clearinghouse (270/271, 276/277, 837P).
Ledger & FedNow API
Health Vault, medical credit, FedNow payments, and billing gateway.
Pulse Billing API
Pulse subscription billing, tier feature gating, and Stripe webhook handlers.
Apex Sightline Vision EHR API
FHIR R4 vision EHR — refraction, diagnostics, VisionPrescription, optical fulfillment, vision claims.
Apex Odonto Dental EHR API
FHIR R4 dental EHR — odontogram, treatment plans, imaging, lab orders, dental claims.
FHIR R4 REST API
HL7 FHIR R4 REST — CapabilityStatement, Patient/Observation CRUD, Bundle ingest, bulk $export, SMART on FHIR.
TEFCA Interoperability Gateway API
QHIN-ready exchange via KONZA Health — XCPD patient discovery, XCA document query, network directory.
Start With These Files
For a new integration, use this short starter set before opening the full docs or all Postman collections.
Start Here - API Onboarding
docs/API_STARTER_FILES.mdAPEX Nexus Platform OpenAPI
api-command-center/public/openapi/apex-nexus-v1.openapi.yamlFHIR R4 OpenAPI
api-command-center/public/openapi/apex-fhir-r4.openapi.yamlCMS Ecosystem OpenAPI
api-command-center/public/openapi/apex-cms-ecosystem-v1.openapi.yamlApex Platform — All APIs Postman Collection
api-command-center/public/postman/apex-platform-all.postman_collection.jsonFHIR R4 Postman Collection
api-command-center/public/postman/apex-fhir-r4.postman_collection.jsonIntegration Guides
FHIR, OAuth, Prime ingest, webhooks
API Explorer
652+ endpoints by service
Get API Keys
Self-service scoped tokens & OAuth
Documentation
API reference, integration guides, webhooks, compliance, and architecture.
API Reference
Starter File List
The seven markdown, OpenAPI, and Postman files new partners should use first
Interactive API Reference
15 OpenAPI 3.0 specs — Swagger Try-it-out, YAML download, Postman
FHIR R4 API Reference
How to call FHIR — live CapabilityStatement, REST patterns, bulk $export, SMART scopes
Scope Reference
Complete OAuth, SMART on FHIR, and API key scope catalog with endpoints
APEX Nexus Platform
Flagship EHR — FHIR R4, mobile, semantic layer, bulk export, 663+ routes
Full Route Catalog
Partner sign-in required — search 652 routes by method and domain
FHIR R4 Resource Catalog
Browse 355+ resource types and US Core profiles
FHIR Data Lake
HAPI R4 store, ingest pipeline, quality metrics, lineage, GPID master
Postman Collections
One unified "All APIs" collection (import once) plus per-product collections
SDKs & Codegen
FHIR R4 client libraries plus OpenAPI Generator deep links for TypeScript, Python, Java
Integration Guides
Getting Started
Partner account, credentials, and your first authenticated API call
Build on APEX Nexus
Platform architecture, data domains, auth, and route catalog
Your First FHIR Read
CapabilityStatement, OAuth bearer token, Patient search by GPID
Register an OAuth Client
Self-service OAuth 2.0 for SMART on FHIR and M2M integrations
Prime Wearable Ingest
Vendor telemetry → FHIR Observations with prime.ingest.write scope
Configure Event Webhooks
HTTPS endpoints, signature verification, delivery monitoring
Sightline Vision Exam Workflow
Exam sessions, refraction capture, optical fulfillment REST
Odonto Chart & Procedure Posting
Odontogram, treatment plans, CDT procedure posting
Bulk FHIR Export ($export)
SMART Backend Services bulk export, async polling, NDJSON download
All Integration Guides
23 guides across onboarding, FHIR, Nexus, auth, and Prime
Identity & Security
GPID Identity Resolution
Golden Record patient identity, SHA-256 matching, merge/split lifecycle
GPID Boundary Contract
Required X-Apex-Actor-GPID headers, enforcement rules, valid formats
Authentication & OAuth 2.0
OAuth, SMART on FHIR, JWT, MFA, RBAC, token lifetimes, tenant isolation, audit logging
SMART Health Cards & Links
VCI-compliant verification, SHL generation, credential management
Compliance & Legal Hub
HIPAA, SOC 2 Type II, HITRUST, ISO 27001, GDPR; BAA, DPA, data retention, subprocessors
Plexus IAM
Enterprise identity, RBAC, tenant provisioning, audit trail
Platform Services
Apex Sightline (Vision EHR)
Refraction, diagnostics, VisionPrescription, optical fulfillment REST
Apex Odonto (Dental EHR)
Odontogram, treatment plans, CDT procedures, lab orders, imaging
Prime Wearables API
Oura, WHOOP, Garmin, Apple Health — telemetry → FHIR Observations
Horizon Population Health
NL-to-SQL, risk stratification, quality measures, care gaps
Catalyst Genomics
Variant calling, biomarkers, bioinformatics pipeline tracking
Beacon Document Ingest
PDF/FHIR upload, virus scanning, SMART Health Card verification
Velocity RCM
Claims submission, denials, AR aging, payer operations
Ledger & FedNow
Health Vault, medical credit, FedNow real-time payments
Integration & Ecosystem
CMS Health Tech Ecosystem
Partner onboarding wizard, token management, OAuth registration
TEFCA Gateway
QHIN exchange via KONZA Health — XCPD, XCA, network directory (OpenAPI v1)
TEFCA / KONZA Integration Guide
Outbound XCPD/XCA through Parker's designated QHIN partner KONZA Health
Webhooks & Event Catalog
20 event types with HMAC signing spec, retry policy, and idempotency
Partner Certification
Go-live checklist — sandbox, security, production, and operations
Sandbox Test Environment
sandbox.api.parkerapex.com — synthetic data, same OpenAPI contracts
Pipeline Monitor
Per-partner sync rates, latency, data quality, webhook delivery
Operations & Trust
Rate Limits & SLA
Per-product tiers, burst limits, X-RateLimit headers, 429 handling
System Status
Live health probes for production API, FHIR, OAuth, and lake endpoints
Changelog
API and developer portal release notes, breaking change notices
Deprecation Policy
90-day notice, Sunset headers, deprecated endpoint registry
Nexus Architecture Overview
Partner sign-in required — domain map, platform layers, and engineering runbooks