OpenEMPIAn Open Source Enterprise

Master Patient Index

Odysseas Pentakalos, Ph.D.

SYSNET International Inc.

Background

Extracted from the Santa Barbara Care Date Exchange

Version 1.0 consisted of an EMPI and the basis for a Record Locator Service-based exchange

Various limitation in 1.0 including hard-coded deterministic matching algorithm and inefficient data model

Verson 2.0 is a complete rewrite resolving the key issues of version 1.0

Architecture

SOA-based architecture with extensibility and performance being the key requirements

Provides pluggable model for: Matching algorithms Blocking algorithms String matching algorithms

Currently includes 2 matching algorithms (both are highly configurable) Deterministic Probabilistic

A rule-based matching algorithms is in the works

Current Work

OpenEMPI provides common registry and Record Locator Services for a federation of OpenMRS instances (Google Summer of Code project)

OpenEMPI is being incorporated into the Connect Framework (Federal Health Architecture)