Your clients shouldn't be your guinea pigs.

mock.health is a free FHIR test server and sandbox that behaves like a real EHR. The first time your FHIR integration meets real Epic behavior shouldn't be in production at your customer's hospital. Battle-test against a synthetic Epic, Cerner, or Meditech first. Same patients underneath, three vendor personalities at the wire. Find the edge cases on a Tuesday, not on go-live.

Real EHR behavior, before your demo lands

~3,800 production FHIR endpoints harvested from the Brands Bundles, plotted by CapabilityStatement-shape cluster. Browse the map: Epic publishes one CapStmt; production hospitals deploy nine distinct shapes of it. 135 hospitals are outliers — they advertise different resources or different US Core profile support than what the vendor publishes. Per-EHR overlays cover Epic (189 element-level deviations), Oracle Health / Cerner (176; both provider and patient host fronts), and Meditech — every claim source-cited.

Patients with real clinical depth, not lab fixtures

A Markov progression module trained on millions of real patient journeys. Correlated conditions, medications, labs that trend the right direction, narrative radiology reports, real DICOM imaging studies, discharge summaries, and clinical notes. Open Epic gives you 8 patients with one condition each. mock.health gives you a population. US Core 6.1 / USCDI v3 compliant out of the box.

Three EHR personalities, one canonical patient set

Mutate-on-read: one set of synthetic patients, three EHR-shaped endpoints. Build once, integrate three times. CapabilityStatements, search-param subsets, OperationOutcome formats, and SMART on FHIR variants all match the source EHR. The map is the artifact. The synthetic EHR is the product.

Custom cohorts, by morning

Need Neuro ICU patients with Glasgow Coma Scale scores and TCD velocities? Cardiology with heart-failure histories? Oncology with staging and chemotherapy regimens? Email the request before EOD; tagged in your sandbox by morning. No PM, no ticket queue, no roadmap committee.

From signup to integrated demo in an hour

No partner application. No 3-month onboarding. No "apply for a developer account." Sign up, get a token, hit the URL. Pricing: Free for read-only, Pro at $199/month for thousands of patients with clinical depth and custom cohorts, Studio at $499/month for the per-EHR-flavored endpoints + the map, Enterprise for SLA and white-label.

The Map · Pricing · Docs · Custom cohorts · Book a demo · FHIR conformance · FHIR performance · Security & trust · Blog