After drawing up a tailor-made implementation plan and using multifaceted implementation strategies, significant improvements in adherence rates to the Dutch multidisciplinary guidelines for anxiety disorders were found to have occurred. An increase was found in the number of patients being provided the recommended forms of psychotherapeutic treatment, which was the primary aim of the implementation activities. The delivery of adequate pharmacological treatment was not explicitly targeted for change and remained fairly stable. Generally, it seems that we may safely conclude that the implementation of evidence-based practice guidelines for anxiety disorders within mental health care is feasible.