The Mater Infirmorum Hospital, commonly known as The Mater is an acute hospital in Belfast, Northern Ireland and serves a population of over 200,000 people. It provides services to most of North Belfast and South Antrim, reaching as far as Glengormley, Carrickfergus and Newtownabbey. It also provides a psychiatric service for North Belfast and West Belfast. The Trust provides a wide range of services including acute In-patient, A&E, Day Procedures, Mental Illness and Maternity.