Katie Evans, PhD, NCACII, and J. Michael Sullivan, PhD, are cofounders of the Evans and Sullivan Clinic in Beaverton, Oregon, specializing in the treatment of adults and adolescents with dual disorders. Dr. Evans serves as CEO and Treatment Coordinator and Dr. Sullivan is Clinical Director. Internationally known for their expertise on dual diagnosis issues, they have coauthored numerous articles, client materials, and books, including Dual Diagnosis, Second Edition: Counseling the Mentally Ill Substance Abuser.

• All titles by Katie Evans