BACKGROUND: The mental health service delivery transformation has created models of care that generate demand for a workforce with particular competencies. OBJECTIVE: This article develops a psychiatric mental health (PMH) nursing workforce agenda in light of demand generated by new models of care and the capacity/capabilities of the PMH RN and advanced practice nurse (APN) workforce. DESIGN: Examine the current capacity of the PMH nursing workforce and how health care reform and related service delivery models create demand for a particular set of behavioral health workforce competencies. RESULTS: PMH RNs and APNs have an educational background that facilitates development of competencies in screening, care coordination, leveling care, and wellness education. PMH RNs are a large workforce but the size of the PMH APN group is inadequate to meet demand. CONCLUSION: The specialty must strategize on how to build requisite PMH RN and APN competencies for the evolving service landscape.