By 1995 there were 232 EBAIS in Costa Rica, mostly among underserved communities, with rates of access in rural areas rising from 64% in 1995 to 79% in 2000. Alongside EBAIS, some 15% of the population is attended by private providers that are contracted by the CCSS to deliver primary care. With at least one medical doctor, one nurse or nursing assistant and one health care assistant, EBAIS serve around 1 000 households each.