Your health tech product needs to write clinical notes into eClinicalWorks. It also needs to book appointments through drchrono. You open the API documentation for both platforms and start mapping out the integration. eClinicalWorks offers FHIR endpoints through its Platform for Open Development, but the access is practice-scoped, read-heavy, and write capabilities for clinical workflows require contracted arrangements that go beyond the standard developer portal. drchrono provides FHIR and proprietary APIs, but the license is revocable, rate limits restrict high-volume usage, and the company reserves the right to modify or suspend access without notice. The workflows your customers depend on (scheduling, note ingestion, eligibility verification, billing) sit behind web interfaces that no API fully covers.
This is the integration reality for developers building on eClinicalWorks and drchrono in 2026. Both platforms offer more interoperability than many legacy EHRs, but neither provides the complete write access that production healthcare workflows demand. Optexity bridges this gap by turning each platform's web interface into an API-callable automation, so your application can handle the full workflow without manual portal navigation.
This article covers what each platform's API actually provides, where the coverage drops off, and how to automate the workflows that fall outside API reach.
What eClinicalWorks Actually Offers for API Integration
eClinicalWorks has invested meaningfully in interoperability. The platform is not a closed system, and its API infrastructure is worth understanding before examining the gaps.
What the API covers:
- FHIR via Platform for Open Development. Third-party developers can integrate healthcare applications with the eCW EHR using FHIR. The developer portal at fhir.eclinicalworks.com provides access to provider-facing applications, including SMART on FHIR and backend service integrations.
- Patient-facing access via healow. The healow FHIR Developer Portal (connect4.healow.com) supports patient-facing applications, including scheduling platforms and patient data access.
- Nationwide data sharing. eCW participates in CommonWell, Carequality, and has achieved TEFCA QHIN designation through PRISMANet, enabling health record exchange across organizations nationwide.
- PRISMA health information search. A search engine that aggregates patient records from primary care providers and specialists across clinics, urgent care centers, and hospitals regardless of which EHR they use.
- EHI Export. Functionality for practices to export all electronic health information stored in the eCW EHR for individual patients or entire populations.[1]
What drchrono Actually Offers for API Integration
drchrono provides a more accessible API than many legacy EHRs. The platform offers both FHIR and proprietary endpoints, and developers can register for a dedicated test environment. The constraints show up in the licensing terms and operational limits.
What the API covers:
- FHIR and proprietary APIs for read and write access to clinical data, scheduling functions, and billing operations
- Developer account with test environment for building and testing integrations before production deployment
- AI integrations including a DeepScribe partnership for ambient transcription and automated note-taking
Where Both APIs Hit Their Limits
Both platforms offer more interoperability than many legacy EHRs. The constraints become visible when you move from reading data to writing it, and from test environments to production scale.
The drchrono API is real and functional. The challenge is that the licensing and operational constraints make it difficult to build production-scale healthcare workflows that depend entirely on API access. When your integration requires custom scheduling interactions, note ingestion, or high-volume billing workflows, the API alone may not provide a stable path.
Where Both Platforms Leave Developers Stuck
The gap patterns across eClinicalWorks and drchrono are consistent with what legacy healthcare systems broadly struggle with: the web interface can do more than the API exposes. A systematic review found that 95% of US healthcare organizations still rely on HL7 v2 as their primary interoperability standard, a protocol from the 1980s that was never designed for the integration patterns modern health tech products require.[4]
The most common blocker is clinical documentation. eCW's FHIR endpoints are read-heavy, so writing SOAP notes back into encounter records requires contracted arrangements beyond the developer portal. drchrono does offer write endpoints, but the revocable license and usage restrictions make it a fragile foundation for production note ingestion. Neither platform provides a standard endpoint for pushing structured AI scribe output into the correct documentation fields. The progress notes interface sits behind a web portal on both systems.
Scheduling presents a similar split. Both platforms expose slot availability through their APIs, but the booking and confirmation flows rely on proprietary interfaces with unique provider templates, location rules, and appointment type restrictions. An integration that reads availability is straightforward. One that completes the full booking loop typically requires portal interaction.
Then there is the operational load that compounds at scale. drchrono enforces strict rate limits across API calls. eCW throttles per practice, and each practice may run different base URLs, activation steps, and throttling thresholds. When your platform processes hundreds of eligibility checks or appointment bookings daily, these limits become production bottlenecks. A complete RCM workflow, checking eligibility, determining authorization requirements, submitting with attachments, and monitoring approval, requires multiple API calls with conditional logic between each step. Neither platform chains these into a single endpoint. Your team builds and maintains the orchestration layer.
Four Approaches When the API Falls Short
When your application hits a workflow that the eCW or drchrono API does not cover, four approaches can bridge the gap.
FHIR/HL7 hybrid gateways are legitimate for read-heavy use cases. Build an integration gateway that handles token management and caching with built-in retries and backoff. Prioritize user-facing calls over batch calls. This works well for pulling patient demographics, lab results, and appointment data. It does not solve the write access problem for clinical notes or custom scheduling.
Aggregators like Stedi and FHIR intermediaries offer standardized data exchange for supported platforms. The trade-offs: coverage gaps when the aggregator does not support your target system, data that is often cached or stale rather than reflecting the portal's actual current state, and per-transaction pricing that compounds at scale.
Custom scripting with Playwright or Selenium gives your team full control. The cost is maintenance: every UI update on eCW or drchrono risks breaking your integration. Each platform requires a separate scraper. Your engineering team ends up maintaining a library of brittle scripts alongside the product they are building.
Browser automation records the workflow once on each platform's web interface and converts it to a deterministic automation callable via API. Any action a human can perform in the portal, including note entry, appointment booking, and billing form submission, can be automated. Self-healing locators adapt when the portal UI changes.
How Browser Automation Bridges the Gap for eCW and drchrono
The workflow follows three steps, consistent across both platforms:
- Record the workflow. A developer demonstrates the task using a browser extension: log into the EHR, navigate to the target screen, perform the action (book appointment, enter clinical note, submit billing form), and save the result. The platform captures every interaction.
- Review the automation. The recording converts into structured automation steps in JSON format. Your team can review the steps, adjust parameters, and add conditional logic where needed.
- Deploy as an API endpoint. The automation becomes callable from your application. Send a request with patient identifiers, encounter metadata, and workflow parameters. Receive structured results back.
Platform-specific handling:
- eClinicalWorks. The automation navigates practice-specific configurations without requiring your integration layer to manage per-practice base URLs or activation differences. Two-factor authentication is handled natively with persistent browser sessions. When eCW releases version updates that change the UI layout, self-healing locator systems adapt without manual code changes.
- drchrono. The automation interacts directly with drchrono's proprietary scheduling interface, note documentation fields, and billing forms. Rate limits on the API do not apply to browser-based interactions. The same recording-to-API pattern covers drchrono's custom form builder, appointment management, and clinical documentation screens.
The key differentiator from AI-driven browser agents: deterministic execution. The automation follows the same recorded path on every run. No large language model deciding where to click. No variation between executions. For healthcare workflows where accuracy and audit trails matter, predictable behavior is not optional.
Three Workflows Where This Matters Most
Scheduling and Patient Intake
Your patient intake tool needs to fetch available slots, book appointments, and update records across eClinicalWorks and drchrono. Each system structures scheduling differently, with unique provider templates, location rules, and appointment type restrictions.
Browser automation navigates each EHR's scheduling module using the same steps a human scheduler would follow, executing them through deterministic recorded workflows. Your application sends a scheduling request with patient parameters and provider preferences. The automation returns real-time slot availability or booking confirmation pulled directly from the portal's live interface.
AI Scribe Note Ingestion
Your AI scribe generates structured SOAP notes with ICD-10 codes and clinical summaries. The target EHR has limited or no write API for note ingestion. The documentation fields sit behind a web interface.
Browser automation receives the structured note data via API, logs into the EHR, navigates to the correct patient encounter, and inserts each section into the appropriate documentation field. SOAP sections map to their corresponding EHR fields. The automation handles field layout differences between eCW and drchrono, so your scribe application does not need to know how each EHR organizes its documentation interface. You can watch the full demo to see this workflow in action.
Billing and Eligibility Verification
Both eClinicalWorks and drchrono connect to payer portals where API coverage for eligibility verification and prior authorization is incomplete. CMS-0057-F mandates FHIR-based Prior Authorization APIs by January 1, 2027, but implementation timelines vary by payer type and legacy systems will lag.[5]
Browser automation handles eligibility checks and prior authorization submissions across the payer portals that eCW and drchrono connect to, processing requests in parallel across multiple payers simultaneously.
Why Optexity for eClinicalWorks and drchrono Integration
Optexity built its browser automation platform for the exact integration challenge health tech developers face with legacy EHR systems.
Record once, deploy as API. Demonstrate the eCW or drchrono workflow once using Optexity's browser extension. The platform converts that recording into a deterministic automation your application calls via API. No scripting. No prompt engineering. No weeks-long integration projects.
Deterministic execution for healthcare compliance. AI-driven browser agents use large language models on every step, introducing variability into compliance-sensitive workflows. Optexity automations execute the same steps on every run, 3x faster than comparable AI-driven alternatives at dramatically lower per-run cost because the platform skips the LLM for most operations.
Prebuilt automations for eCW and drchrono. Your team does not start from scratch. Prebuilt automations cover common workflows across both platforms, plus other legacy EHRs including PracticeSuite and AdvancedMD, as well as AthenaOne and Optimantra.
Built for healthcare at scale. Two-factor authentication handling with persistent browser sessions. Concurrent request processing across multiple EHR platforms simultaneously. HIPAA and SOC2 compliant with encryption, audit logging, and role-based access controls.
When Nanonets needed universal EHR integration for their revenue cycle platform, browser automation provided coverage across systems that lacked complete API access. The same approach applies to eCW and drchrono: where the API covers your workflow, use it. Where it does not, Optexity fills the gap.
Start free at Optexity's dashboard.
FAQs
Does browser automation replace the eClinicalWorks or drchrono API?
No. Browser automation complements the API. Use each platform's FHIR and proprietary endpoints for workflows where API coverage exists. Use browser automation for write operations, custom workflows, and portal interactions that the API does not support.
Which eCW and drchrono workflows can be automated?
Any workflow that a human can perform through the web interface. This includes appointment scheduling, clinical note entry, billing form submission, eligibility verification, prior authorization, and patient record updates.
How does automation handle practice-specific eCW configurations?
Each automation is recorded against the specific practice's eCW instance, capturing that practice's UI layout, navigation paths, and field structures. The automation handles per-practice differences without requiring your integration layer to manage configuration variability.
What about drchrono's API rate limits?
Browser-based automations interact directly with drchrono's web interface, so the API rate limits do not apply to automated workflows. Your application can process scheduling and documentation interactions, along with billing workflows, at the volume your patient load requires.
How does automation handle two-factor authentication?
The platform handles 2FA natively on both eCW and drchrono, maintaining authenticated sessions and processing verification codes as part of the automated workflow. Persistent browser sessions prevent re-authentication on every request.
What happens when eClinicalWorks or drchrono updates their interface?
Self-healing locators maintain multiple identification strategies for each UI element. When either platform updates its portal layout, the automation adapts without manual code changes or selector repairs.
Can I run automations across eCW and drchrono simultaneously?
Yes. Concurrent execution means your application can process appointment bookings on eClinicalWorks while simultaneously entering clinical notes on drchrono, or run eligibility checks across both platforms in parallel.
Is this approach HIPAA compliant?
Optexity is HIPAA and SOC2 compliant with encryption, audit logging, and role-based access controls. Deterministic execution creates auditable workflows for every run, with the same documented path on each execution.
How long does setup take for eCW or drchrono automation?
For prebuilt automations, deployment takes minutes. Custom workflows for platform-specific screens or complex multi-step processes typically take hours, not weeks.
How does deterministic automation compare to AI-driven browser agents?
AI-driven agents use a large language model to decide where to click on each run, introducing variability. Deterministic automation follows the same recorded path every time. For healthcare workflows where accuracy and audit trails matter, deterministic execution runs 3x faster and costs significantly less because the platform skips the LLM for most operations. For teams evaluating the distinction, a comparison of production-ready browser automation platforms covers the trade-offs in detail.
References
[1] eClinicalWorks. "Interoperability Solutions: Comprehensive Clinical Data." eclinicalworks.com. https://www.eclinicalworks.com/products-services/interoperability/
[2] Technical Team at 6B. "eClinicalWorks EHR Integration: Architecture Patterns for FHIR, HL7 v2, and Hybrid Interfaces." 6b.health, December 12, 2025. https://6b.health/insight/eclinicalworks-ehr-integration-architecture-patterns-for-fhir-hl7-v2-and-hybrid-interfaces/
[3] EverHealth Solutions Inc. (DrChrono). "API Development Terms & Conditions." drchrono.com, March 3, 2026. https://www.drchrono.com/api-development-terms-conditions/
[4] Muhammad Ayaz et al. "The Fast Health Interoperability Resources (FHIR) Standard: Systematic Literature Review of Implementations and Applications." JMIR Medical Informatics / PubMed Central, July 30, 2021. https://pmc.ncbi.nlm.nih.gov/articles/PMC8367140/
[5] Centers for Medicare & Medicaid Services. "CMS Interoperability and Prior Authorization Final Rule (CMS-0057-F)." CMS.gov, January 17, 2024. https://www.cms.gov/newsroom/fact-sheets/cms-interoperability-and-prior-authorization-final-rule-cms-0057-f
