OBJECTIVES: To identify the immunization providers’ characteristics associated with immunization rate in children younger than two years. METHODS: A cross-sectional and a cluster sampling design were implemented; 528 children between 18 and 70 months of age were sampled in five public health clinics in Mosul-Iraq. Providers’ characterizations were obtained. Immunization rate for the children were assessed. Risk factors for partial immunization were explored using both bivariate analyses and multi-level logistic regression models. RESULTS: Less than half of the children had one or more than one missed dose, considered as partial immunization cases. The study found significant associations of immunization rate with provider’s types. Two factors were found that strongly impacted on immunization rate in the presence of other factors; birthplace and immunization providers’ types. CONCLUSIONS: Improving communication between parents and immunization provider will engage the parents in decision making, clarify the importance of immunization, and highlight the value of immunization compliance.