Simply providing training may not be enough to get therapists to actually provide evidence-based treatment in practice. Practical and administrative barriers can interfere. A recent study examined ways of facilitating the adoption of CBT in clinical practice:

Michael R Kauth, Greer Sullivan, Dean Blevins, Jeffrey A Cully, Reid D Landes, Qayyim Said, Thomas A Teasdale, 2010. Employing external facilitation to implement cognitive behavioral therapy in VA clinics: a pilot study,
Implementation Science 2010, 5:75.

I believe it can be accessed online, free of charge at: http://www.implementationscience.com...-5908-5-75.pdf