Ca Medical Exclusions MCP server

@pipeworx/ca-medical-exclusions

California DHCS Medi-Cal Suspended and Ineligible (S&I) Provider List screening — check a provider by name, NPI or license/provider number against the ~23,400-row list of providers barred from California's Medicaid program, the state-level counterpart to the federal HHS OIG LEIE (leie pack) and the sibling of ny-omig-exclusions for New York.

Part of Pipeworx — an MCP gateway connecting AI agents to 1784+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.

Tools

provider against the DHCS S&I List. An NPI or license match is an identification (both are exact, provider-specific identifiers); a name match — even an exact one — is a candidate lead only, since the list carries no date of birth and many entity rows have no first/middle name to disambiguate same-named providers.

• camedicalcheck_exclusion(name?, npi?, license?, limit?) — screens a

NPI or license number, provider-type diversity, the oldest/newest suspension date, the list-wide statutory basis, and the CHHS Open Data Portal's "last modified" date for the baked copy this pack serves.

• camedicalexclusion_coverage() — total exclusions held, how many carry an

Auth

Keyless.

Data sources

— the full DHCS S&I List as clean JSON from the CHHS Open Data Portal's CKAN datastore (lastname, firstname, middlename, AKA/DBA, address, provider type, license number, provider number(s), date of suspension, active period). Returns all ~23,400 rows in a single request. — resource metadata; lastmodified is used as dataasof. — the dataset's human-facing landing page.

Why the CHHS datastore, not dhcs.ca.gov/files.medi-cal.ca.gov directly

DHCS's own pages (dhcs.ca.gov, files.medi-cal.ca.gov) link the S&I List only as a month-named CSV — e.g. suspended-ineligible-list-august-2026.csv — whose filename changes on every monthly refresh, so it cannot be fetched by a fixed URL without first scraping the current filename from an HTML page. The SAME dataset (same CKAN resourceid, 48630a37-b5ba-4d3d-af54-e82b30e658a0) is also published on the California Health and Human Services (CHHS) Open Data Portal, data.ca.gov and catalog.data.gov — all three mirror the identical resource. The CHHS CKAN API's datastoresearch/resource_show endpoints are keyed by that stable resource id, never by a filename, and return clean JSON directly (no CSV parsing). This pack uses that API.

Why this is baked, not a live proxy

Per root CLAUDE.md's standing rule for a table this size, the full list (23,433 rows at capture time, ~7.2MB as generated TypeScript) is baked by scripts/bake-index.mjs into src/ca-dhcs-index-data.ts, registered in workers/gateway/src/pack-baked-indexes.json, uploaded to KV at deploy, and injected into every call as args._bakedIndex — never a static module-scope import (fleet #2754: six packs doing that put ~48MB of retained heap into every gateway isolate and cost about one call in four as a Cloudflare 1102). A missing or malformed injection throws loudly rather than answering "not found" — see src/index.test.ts.

Re-run node mcps/ca-medical-exclusions/scripts/bake-index.mjs periodically (DHCS/CHHS update the list monthly) and recommit; dataasof on every response says how stale the baked copy is relative to CHHS's own last_modified metadata.

What this data does NOT include — and what it does, that NY's list lacks

Shortened. The full README is on GitHub.