Healthcare & Life Sciences is smaller than the other hot verticals on apis.io — 215 providers across 743 APIs — but it’s structurally one of the most coherent, because almost everything in it now rides the same standard. If the AI vertical’s organizing primitive is the model and payments’ is the transaction, healthcare’s is FHIR. This is post five in our week walking the hottest six industries on apis.io.
The bands
| Band | What it does | Providers on apis.io |
|---|---|---|
| Interoperability layers | Translate and aggregate clinical data | Redox (4 APIs), Particle Health, Medplum (4) |
| EHR platforms | Records, encounters, scheduling | Oracle Health / Cerner (6), athenahealth (3) |
| Payors | Coverage, claims, benefits | Humana (4) |
| Government health | Federal programs, public data | VA Lighthouse (23), CMS (10) |
| Revenue cycle | Eligibility, billing, credentialing | Candid Health (8) |
The VA’s 23 APIs and CMS’s 10 make the federal government one of the largest healthcare API publishers in the catalog — and both lead with FHIR.
What’s shifted in 2026
- FHIR R4 is the universal surface. Redox, Medplum, Cerner, athenahealth, Humana, the VA, and CMS all expose FHIR R4 as the primary contract. That convergence is what makes the capability layer workable here: you can compare “patient,” “coverage,” or “medication” resources across payors, EHRs, and government programs without re-learning each vendor’s bespoke schema.
- Clinical AI is embedding into the EHR surface, not sitting beside it. Ambient documentation and scribe vendors that used to be standalone are now integrating into Epic, Cerner, and athenahealth workflows — which means their value increasingly shows up through existing clinical APIs rather than as a separate destination.
- Open biomedical data is becoming callable infrastructure. Springer Nature and Data Commons publish MCP servers, and federal open-data programs (NIH, CMS, FDA) expose research and claims data. Builders are increasingly querying open research APIs alongside proprietary clinical data for decision support and real-world evidence.
Where to start
- The Healthcare industry page and the Healthcare category — the filtered cohorts.
- capabilities.apis.io — compare FHIR resources across providers.
- The MCP server catalog — the biomedical-data surfaces wired for agents.
- Provider profiles — Redox, Medplum, and the VA’s Lighthouse program are the best places to see the interoperability pattern up close.
The takeaway
Healthcare’s catalog depth is thinner than fintech’s, and the legacy EHR giants are still largely behind partner walls. But what is published is unusually navigable, because FHIR gives the whole vertical a shared vocabulary. Read it by resource type, not by vendor — the standardization is the feature, and it’s what will let agents work across clinical, payor, and research data without a custom adapter for every system.