IntroductionInterprofessional education includes diverse strategies in order to promote competencies such as communication, ethics, critic reflection and quality processes. It is characterized by simultaneously including diverse discipline participants in the educative process. The assessment of these competencies is essential. AimTo design an assessment instrument for interprofessional health workers competencies and to measure its psychometric properties. MethodAn assessment instrument was designed, it included four competencies (communication, learning and critical reflection, quality and health processes, and ethics and values); in three dimensions (leadership and team work, roles and responsibilities, patient centered care). For content validity assessment, an expert judgement was made. Due to the fact that this instrument can be used as seven separate instruments, or, as well, as the combination of several of them due to intersection of the items between dimensions and competencies; seven exploratory factorial analysis were performed, four by competencies, and three by dimensions. The exploratory factorial analysis used varimax rotation, Bartlett test and KMO.For reliability assessment Cronbach´s Alpha was performed for each dimension, for each competency and two general ones (one for dimension assessment and another one for competencies). ResultsPsychometric properties of the instrument are described. It shows adequate properties to be used in Mexican population. ConclusionsThe instrument is suitable for measuring interprofessional work competencies from different dimensions.