Zamzam Medical Services offers medical services ranging from in-patient and out-patient, maternity, to dental services. The facility also provides counselling on lifestyle diseases, nutrition and HIV. The hospital is part of the Tunza Family Health Network, an initiative by PSI Kenya to provide quality healthcare services to vulnerable communities in Kenya. Zamzam Medical Services was founded in 1988 under the leadership of the late Dr Yussuf with the aim of reducing the cost of health care for the residents of Kajiado.