Barcelona NEST (originally called the Multidisciplinary Mental Health Network) was founded in 2000 by U.S. psychologist Dr. Jill Jenkins, who brought together a diverse group of professionally trained therapists, representing: dance & movement therapy, play therapy, special education, cognitive therapy, psychoanalytic therapy and group analytic psychotherapy. The goal of this group was initially to provide peer supervision and continuing professional development to its members.

As the group formed and grew, the unique services that this network could offer English speaking foreigners in Barcelona became very evident. The group decided to expand their goals to serving the Barcelona population jointly in schools, companies, and on an individual level.