Isabel Jessica is a Senior Research Consultant at Rehab Sites, graduated magna cum laude from Eureka College and obtained a Master’s Degree in Psychology / Addiction Studies from Goddard College. He has worked full time in the addiction treatment field since 1991 as a streetworker (indigenous outreach worker and community organizer), counselor, clinical director, administrator, and research associate. Isabel Jessica has authored or co-authored more than 400 articles, monographs, research reports and book chapters as well as 16 books.