OncoEMR (Flatiron Health) API
No open API. A FHIR surface exists as a paid per-tenant add-on with docs behind a registration wall; Flatiron states FHIR APIs may require additional fees. Everything else runs through Flatiron-managed HL7 interfaces with an approved vendor list. No SDKs or public webhooks.
Frequently asked questions
OncoEMR (Flatiron Health) scores F on the API Report Card. No open API. A FHIR surface exists as a paid per-tenant add-on with docs behind a registration wall; Flatiron states FHIR APIs may require additional fees. Everything else runs through Flatiron-managed HL7 interfaces with an approved vendor list. No SDKs or public webhooks.
Without a usable official API, teams fall back on manual exports, file drops, or one-off vendor integrations. The other option is an unofficial API layer like Supergood that automates the authenticated web app directly.
OncoEMR by Flatiron Health is the leading cloud EHR purpose-built for community oncology, chemo ordering with NCCN templates, staging, treatment plans, and practice operations. Roche-owned since 2018 ($1.9B); the EHR also feeds Flatiron's real-world-evidence data business.
Healthcare / Oncology EHR, community oncology practices and cancer centers.
4,700+ providers, 220+ community oncology practice partners, 1,600+ sites of care, 5M+ patient records; active 2026 partnerships (Abbott, Natera, Tempus, DeepScribe).
Regimens/chemo orders, dosing, staging, labs, molecular-profiling results, treatment plans, scheduling, practice operations.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.