The VA developed an NP residency competency tool to standardize assessment across 5 sites and document competence in 7 domains. The tool was validated through an iterative process involving VA NP experts, trainees, and medical education consultants. It assesses residents in 69 items across domains like clinical competency, leadership, and interprofessional collaboration using a 0-5 scale. Analysis found residents and mentors' ratings increased significantly over 12 months for all domains, with mentors consistently rating residents higher. The validated tool demonstrates residents' progression and program effectiveness for accreditation.