Electronic Master Patient Index (“eMPI”) Software and Support

Electronic Master Patient Index (“eMPI”) is a system to aid the identification of patients and minimise the number of duplicate health records held for each patient. It achieves this by collecting key data from NHS Wales’ clinical systems, including name, address, date of birth and sex, from across NHS Wales Health Boards. This then creates one “gold standard” patient identity record that is intended to best represent the individual. The eMPI is used by all of the national services delivered by Digital Health and Care Wales ("DHCW") and is one of, if not the, most operationally significant systems.