Mater Misericordiae Hospital was opened in 1962 by the Sisters of Mercy, a Catholic Order of Nuns originating from Ireland, three years after registering themselves as the Registered Trustees of an entity under the Perpetual Succession Act (the succeeding legislation after independence). The Sisters of Mercy first set up a 60 bed general hospital to cater mainly to poor, indigenous Kenyans, with the primary mission being general healthcare.
In 1970, a maternity ward was opened with antenatal, postnatal and immunization clinics attached in order to upgrade the quality of maternity healthcare available to the poorer segments of the Nairobi population. Between1972 and 1986 the hospital expanded in various ways;
Mater Misericordiae Hospital was the first hospital within the East and Central Africa region to be awarded ISO9001:2000 Quality Management System Certification in July 2002 after 18 months of rigorous effort. Through this the hospital commits to excellence in providing the highest quality of healthcare and services to all its customers
Currently Mater Misericordiae Hospital has established and implemented a quality management system in line with ISO 9001:2008. The facility will strive to ensure that all employees fulfil quality promises to her clients. In our untiring efforts to deliver quality services to clients, our Laboratory department have embarked on attaining a further certification which is an accreditation to ISO 15189: ISO/IEC 17025 by July 2013.