Outcome-based evaluations still dominate in continuing professional development (CPD) despite the availability of evaluation approaches that address program processes and contexts. Our continued reliance on outcomes-based evaluation fails to respect the importance of complexity and the human element of program planning and implementation. Therefore, it is time that the field of CPD embrace complementary approaches to program evaluation that consider the complexity and maturity of programs and their contexts, while providing credible and relevant information to inform strategic decisions regarding the future of a program. Principles-focused evaluation provides a complement to traditional evaluation approaches through the articulation of a program’s values that can be actioned. These “actionable values,” known as principles, become the focus of the evaluation for the purposes of program decision-making. This paper describes how one CPD program, designed as a response to growing opioid-related harms, adopted a principles-focused evaluation to inform ongoing iteration of the program. The process used to design the principles, how the principles are informing the transportability of the program, and implications for CPD evaluation are discussed.