Case Study: Geisinger achieves 30TB data consolidation and $2.5M in cost savings with Cloudera

Geisinger EDW optimization to gain 360-degree view of the customer

Geisinger Health System is a large, physician-led rural healthcare organization serving over three million patients across Pennsylvania and New Jersey. Faced with disparate EHRs, clinical systems, patient surveys, HIE feeds and emerging IoT data, Geisinger needed a scalable way to combine structured and unstructured data, enable near‑real‑time ingestion and analytics, and reduce the escalating costs of expanding its legacy EDW.

Geisinger adopted Hortonworks Data Platform (Hadoop) to consolidate data lakes, onboarded over 30 TB of records, used Apache Solr to search 200 million patient notes in seconds, and leveraged Spark and governance features for secure analytics. The platform enabled precision‑medicine workflows and future streaming with Hortonworks Data Flow, while delivering immediate savings—about $2M in EDW replacement costs and $500K annually in maintenance—plus faster, broader access to actionable clinical insights.

Geisinger