Mexican Social Security Institute Tags: Government Agency.The Mexican Social Security Institute (Spanish: Instituto Mexicano del Seguro Social IMSS) is a governmental organization that assists public health pensions and social security in Mexico operating under Secretaría de Salud (Secretariat of Health). thumbnail budget ($) 6.0E9 formation date 1943-01-19 formation year 1943-01-01T00:00:00+02:00 headquarter Mexico City jurisdiction Federal government of Mexico leader Daniel Karam Toumeh location Mexico City number of employees 360106 parent organisation Secretariat of Health Learn more... Loading...