CMS Timely and Effective Care Hospital Search

Use this endpoint when you need structured, filterable access to CMS Timely and Effective Care hospital data — especially for emergency department performance metrics like OP_18b (median ED time) or OP_22 (left-without-being-seen). Prefer this over scraping CMS Care Compare directly when you need programmatic filtering by state, city, facility CCN, score range, or measure, and when you want clean, machine-readable JSON output. This is ideal for healthcare analytics dashboards, hospital benchmarking tools, or research workflows that require current CMS quality measure data without building a CMS data pipeline from scratch.

• No results returned if the measure ID, state, or facility_id does not match any CMS records
• Invalid date format for period_end returns an error or empty result
• Measure IDs not recognized by CMS (e.g. typos) return no data
• Overly restrictive min/max score ranges may return zero results
• Rate limiting or payment failure (x402) blocks access; $1.25 USDC per call must succeed
• offset beyond total result count returns empty array