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eClinicalWorks

eClinicalWorks offers solid FHIR R4 read coverage and reasonable write capabilities, but every write operation requires a separate contract. There are no webhooks or event-driven integration options.

Medium-High complexityContract-gatedFHIR R4
FHIR Version
R4 (US Core 3.1.1 / 6.1.0)
Rate Limit
250 calls/min per practice code
Sandbox
Yes — portal signup required
ONC Certified
Yes

Capability Matrix

CapabilityReadWrite
Patients
Self-serve
Contract required via interop@eclinicalworks.com. Create + Update on v12.0.2/v12.0.3 only.
Appointments
Not available on eCW FHIR portal. Scheduling only via healow Developer Portal.
Only via healow Developer Portal, not the main eCW FHIR API.
Encounters
Self-serve
Contract required. Creates Telephone Encounter records only.
Clinical Notes
DocumentReference + DiagnosticReport read.
Document Upload
Self-serve
Contract required. C-CDA and PDF uploads via DocumentReference create.
Lab Results
Observation (Labs) + DiagnosticReport.
Medications
Self-serve
Contract required. MedicationRequest create; MedicationStatement reconciliation.
Allergies
Self-serve
Contract required. AllergyIntolerance create only — no update.
Conditions
Self-serve
Contract required. Condition create only — no update.
Immunizations
Self-serve
Contract required. Create only.
Vitals
Self-serve
Billing / Claims
Coverage / Insurance
Coverage read on v12.0.2+ only.
Referrals
ServiceRequest read on USCDI v3 builds only.
Bulk Data Export
Via SMART Backend Services. May require additional configuration for group definition (not confirmed in public documentation).
—
Events / Webhooks
—
DocumentedNot documentedSelf-serveGatedPartner only

Integration considerations

  • All write APIs require a separate contract — no self-service write access
  • Two separate developer portals (eCW and healow) with different registration flows
  • No webhooks or FHIR Subscriptions — no event-driven integration capability
  • Rate limit of 250 calls/min per practice is restrictive for high-volume operations
  • Each practice must individually activate FHIR APIs via On-Demand Activation
  • Practices must be on specific certified builds — older versions may not support required scopes or resources

Need help with gated access?

Some capabilities require contracts, partner agreements, or special approval. Cobalt has existing integrations with these systems.

Learn more