Query a hospital operations database with planted EHR data quality issues, build CMS-ready reports, and learn to think like a healthcare data analyst who never ships a wrong metric.
25 missions · runs entirely in your browser · no account needed
Read the briefing
A Slack message from your manager
Explore the schema
5 tables in a star schema
Write your query
Full SQL editor with autocomplete
Get expert feedback
Graduated hints, not just pass/fail
Answer questions from the CMO, VP of Operations, and CEO about readmissions, wait times, and patient outcomes.
Duplicate patients, inconsistent department names, mixed date formats, and bad values that silently break your analysis.
Readmission rates, length of stay, ED throughput, utilization, CMS methodology, and age bucketing from DOB.
Every mission maps to a real healthcare analyst task — quality scorecards, CMS dashboards, and provider performance reports you’ll see on the job.
Each mission is a real request from someone at the company. Difficulty increases as you go.
A hospital operations star schema with 5 tables, 5,300+ rows, and 12 planted data quality issues. Duplicate patients that inflate readmission rates, ED department name variants that split your metrics, mixed date formats, and satisfaction scores that include impossible values.
●dimension tables ● fact tables
The CMS quality report is due and the numbers aren’t ready.
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