This document discusses patient matching from the provider perspective. It describes two hospitals, Borgess Health and Our Lady of Lourdes, and their approaches to patient matching. Borgess Health uses a probabilistic enterprise master patient index from Netrix with a 95% tolerance threshold that weights different patient identifying factors. Their process involves policy, the probabilistic system, manual intervention from HIM and registration teams, and results in merging duplicate records after discharge and monthly record clean up. The conclusion emphasizes that patient matching is a patient safety issue according to organizations like The Joint Commission, and risks can be mitigated through human responsibility, design quality, technical implementation, standardized processes, and patient involvement.