Clinical Trainers

Jennifer Barnett, MA, LPC
Jennifer Barnett, MA, LPC, is the Associate Director of Juvenile Justice Services at Wheeler Clinic, in Plainville, Connecticut.  Ms. Barnett provides clinical, programmatic, and administrative oversight for multiple empirically supported, family-based, in-home treatments for juvenile offenders.  Ms. Barnett is a strong advocate for the provision of gender responsive, trauma-informed services within a well developed community based continuum of care.  In addition, Ms. Barnett is a CT statewide trainer in the Multidimensional Family Therapy model, the first such transportation of the MDFT training model to occur.  In this capacity, Ms. Barnett provides clinical training and routine consultation for five Connecticut MDFT treatment teams.  Ms. Barnett has enthusiastically disseminated the MDFT model internationally, in participation with MDFT model developer, Howard Liddle, EdD. Ms. Barnett earned her Masters of Arts in Clinical Psychology at the University of Hartford, in Hartford, Connecticut, and her Bachelor of Arts in Psychology at the University of Connecticut, in Storrs Connecticut.

Lissette M. Colon-Perez, LMHC, LMFT
Lissette Colon is an MDFT Supervisor/Trainer at the Center for Treatment Research on Adolescent Substance Abuse. She completed her Master of Arts in Mental Health Counseling at Boston College.  She is also licensed in Mental Health Counseling and in Marriage and Family Therapy.  She has been working with families for many years, for example providing outpatient substance abuse treatment for adults and adolescents at Community Health of South Dade (CHI).  She joined the CTRADA team in 1999 and became certified as an MDFT Therapist.  In addition to seeing clients as part of several CTRADA studies, Lissette has participated in training and supervising trainee therapists both nationally and internationally.  She has also been involved in the development a “brief” version and an HIV/STD prevention component of MDFT.  Lissette has also contributed to the development of clinical protocols for use in other CTRADA studies exploring family therapy in the juvenile justice system.

Andreas Gantner, M.A.
Andreas Gantner is the German project coordinator of the INCANT study since 2004, where he also functions as the MDFT Supervisor. He is a Psychologist and Psychotherapist. He obtained his Masters degree at TU Berlin in 1989. Since 1992 he is the Director of Therapieladen e.V. in Berlin, an outpatient treatment center for adolescent and adult drug addiction. He is responsible for several prevention and treatment programs, especially for cannabis users.

Juan Carlos Gonzalez, M.S.
Juan Carlos Gonzalez is a Senior MDFT Supervisor and Trainer at the Center for Treatment Research on Adolescent Drug Abuse (CTRADA).  He completed his Masters degree in Marriage and Family Therapy at St.Thomas University and is a licensed Marriage and Family Therapist.  He is currently working on his Ph.D. in Marriage and Family Therapy at Nova Southeastern University.  Since Juan Carlos joined the CTRADA team in 2000, he has contributed to many different projects.  He began as part of the assessment and research team and then became a valued member of the clinical team.  In the last few years, he has been disseminating the MDFT module to troubled teens and families.  In addition to seeing clients, Juan Carlos has also taken part in the development of a brief model of MDFT under the supervision of Howard Liddle, EdD.  He also participated in a pilot study of the HIV/STD MDFT group modules and has advocated for teens and families at the Miami-Dade Juvenile Drug Court.  Juan Carlos provides clinical training and routine consultation nationally.  He has trained new therapists with the MDFT HIV/STD modules and served as a speaker for specific topics such as working with Hispanic families using the MDFT model.  In addition, he has also worked at several Miami-Dade County mental health agencies and hospitals as a clinician and as a facilitator.

Kees Mos, M.S.
Kees is the founder of the first forensic psychiatric outpatient treatment center for juveniles in Holland Het Palmhuis, part of the large mental health care agency for children and adolescents De Jutters in the Hague, Netherlands. Now working as an INCANT MDFT-supervisor and MDFT-therapist for the same Palmhuis. Kees obtained his Master of Science in child psychology and certified cognitive behavior therapist. He is a certified Equip-trainer and Equip train-the-trainer Equip is an evidence based multi-component cognitive behavioristic group treatment program for adolescents with behavior problems. Kees is also working in Forensic Center Teylingereind, a closed institute for juvenile delinquents.

Philip Nielsen, M.S.
Philip Nielsen is currently co-director of an outpatient therapeutic unit for adolescents and their family at the Phenix Foundation in Geneva, Switzerland. Philip is an MDFT Supervisor in the INCANT study. He is a psychologist and a trained family therapist and has been working in the field of substance abuse and addiction for the last 20 years in various settings in the French speaking part of Switzerland. Philip also is a supervisor in different institutions such as the local prison and the Public Youth Agency. Philip holds a Master's degree in Psychology. He is often invited as a speaker for public and professional audiences. He also teaches systemic interventions in the field of addiction in various Swiss professional schools and courses.

Doris Perdomo-Johnson, L.M.F.T.
Doris Perdomo-Johnson is an MDFT Therapist/Trainer at the Center for Treatment Research on Adolescent Substance Abuse.  She has been working with adolescent substance abusing adolescents and their families for over 15 years.  Currently her responsibilities at CTRADA entail seeing clients as part of several CTRADA studies, and participating in training and supervising trainee therapists at a national level.

Isobel Reilly
Isobel Reilly is a family therapist living and working in Belfast, Northern Ireland.  Her career has included both practice and training in social work and family therapy, mainly in mental health settings.  Isobel is course director of the family therapy training programmes at Queen’s University Belfast and her practice base is in the Family Trauma Centre – a specialist community based NHS service for families affected by the ‘Troubles’ and other trauma.  She is also interested in the relationship between public and private expressions of pain, the role of the creative arts in mediating this, and the value of witnessing.