Transformance Journal: Experiential Assistants

Kosu Boudreau, RP, MSW, RSW

Kosu Boudreau, RP, MSW, RSW, is mixed-race, black-identified psychotherapist/ social worker from Toronto, Canada with over 18 years’ experience working with trauma, addictions and end-of-life care. Kosu currently is in private practice with a focus on trauma treatment using psychedelic assisted psychotherapy. She uses an integrated, somatically-grounded, experiential approach, which includes: AEDP™, Internal Family Systems (IFS), Sensorimotor Psychotherapy, Acceptance and Commitment Therapy (ACT) and Psychedelic Assisted Psychotherapy (PAP).

All of these therapies emphasize integration of mind/body/spirit and give primacy to the importance of relationship. Kosu is  also an experienced group facilitator, yoga teacher and long-time meditation practitioner.


Penelope Andrade, LCSW

Penelope Andrade, LCSW is an AEDP Certified Therapist and Supervisor and author of Emotional Medicine Rx: Cry when you’re sad, Stop when you’re done, Feel good fast with over 40 years of experience in San Diego, CA and on Zoom. Penelope found AEDP in 2010 and knew it would be her forever therapeutic home when she discovered how elegantly AEDP integrated her decades long commitment to body-mind-spirit-relational healing and mindfulness. Of the many aspects of AEDP she treasures: being with clients in the embodied present moment, undoing aloneness, trusting those continually arising self-righting impulses, allowing love to flourish relationally, and facilitating clients’ ever increasing self-love-confidence-clarity.

As AEDP can be tricky to master, Penelope enjoys helping new AEDP learners relax into discovering how their innate gifts as therapists thrive and develop in this organic, emergent model. Penelope knows, personally, she will never be done learning AEDP as it challenges her personally and professionally to grow in the most important aspects of consciousness, love and will.  (Read More…)


Joshua DeSilva, PsyD, CGP

Joshua DeSilva, PsyD, CGP (they/them) guest presented in the AEDP Institute-sponsored seminar, “Wounds We Cannot See” in October, 2020 and currently serves on the AEDP Institute’s DBEI Committee. Joshua is a licensed psychologist in Virginia and DC. They identify as a nonbinary Latine person of queer experience. Their family immigrated from Venezuela and maintains strong ties to Latin America. Growing up in the Midwest as a first generation American and attending college and graduate school as a first generation student has powerfully impacted their sense of the importance (and difficulty) of empowering diverse groups to live and learn in spaces that have historically been oppressive and unwelcoming. Professionally, Dr. DeSilva (Josh) is the Associate Director and Director of Training at American University Counseling Center. Josh feels lucky to be a part of the future of psychology in this role. They were appointed by Governor Ralph Northam to serve as a Member of the Virginia Latino Advisory Board and currently serve as Vice Chair of the Board. (Read More…)


Mariana Barstad

Barstad, MarianaMariana Barstad, PhD in Clinical Psychology. Specialist in Medical Psychology, Psycho-Oncology and Psychological First Aid; Clinical Supervisor; Works in private practice.


Steve Carroll

Steve Carroll, LCSW is a psychotherapist in private  practice since 1988 working with individuals, couples and  families as well as supervision/consultation for  colleagues. Prior to private practice he co-developed a  treatment unit for families experiencing child sexual  abuse, supervised a group home for adolescent girls and  supervised an outpatient therapy program for a family  service agency. He is a certified Imago therapist/ supervisor and other background training includes  psychodynamic psychotherapy, object relations, family  systems, Internal Family Systems and Focusing-Oriented  Psychotherapy. 

Steve completed AEDP’s Immersion Course with Diana  Fosha in 2008 and three years of Core Training with Eileen Russell. He has assisted in numerous Immersion Courses, ESI and II and Wired For Healing Workshop with Diana. 

(Read More…)


Gregory Czyszczon

Czyszczon, GregoryGreg Czyszczon, Ph.D., LPC, is from Harrisonburg, Virginia where he teaches counseling and has a private counseling practice. He is also a clinical supervisor for the Secure Child Program, an organization providing attachment-based interventions that focus on the parent/child relationship.

Greg made his way to AEDP via interpersonal neurobiology as well as a supervision group led by David Waters, Ph.D., in Charlottesville, VA


Heidi Frieze

Heidi Frieze, LCSW is a certified AEDP therapist and supervisor. She is currently in private practice near Grand Central Station in New York City, and in Westchester, NY, where she treats both individual adults and couples. Heidi earned her Masters Degree in Clinical Social Work from Fordham University in 2004.

She participated in Diana Fosha’s first AEDP Immersion Course and completed one year of Core training with Diana. Over the years, Heidi has been in individual supervision with Eileen Russell and SueAnne Piliero and small group supervision with Ben Lipton. Heidi has assisted SueAnne in two previous Essential Skills I Training Courses in NYC and in a number of immersion courses.

She also assisted Diana Fosha at a weekend workshop at the Kripalu Center in the Berkshires, MA. Prior to becoming a psychotherapist, (Read More…)


Heather Gretton

Gretton, HeatherHeather Gretton, Ph.D. R.Psych. has more than 20 years experience working with adults, youth, and couples. She completed the AEDP Immersion Course in 2014, and continued with Essential Skills 1 and 2, and Core Training. She has received extensive individual and group supervision and has assisted at a variety of different training courses.

Dr. Gretton is involved in AEDP research and contributed as a co-author to the first AEDP Outcome Study. She is drawn to AEDP as a model of therapy that weaves together science, theory, and clinical knowledge with the authentic and therapeutic use of the self, to promote transformational and hope-filled change


Liza Greville, LCSW

Liza Greville, LCSW, is a Certified AEDP Therapist and Supervisor in private practice in Kane, Pennsylvania, and offers individual therapy to adults in Pennsylvania, New York and Montana, as well as individual and group supervision.

Liza trusts that people heal and grow when they have what they need. In turn, she loves all the ways AEDP theory and maps provide channels of understanding through which ways of nurturing new and needed experiences can flow, both intrapersonally and interpersonally. She believes the same holds true in supervision, and seeks to help supervisees expand their naturalness of use of self, and deepen their understanding of AEDP’s affective change processes. (Read More…)


Elizabeth Perkins, LMFT

Elizabeth Perkins, LMFT Liz is in private practice in San Diego, California. She is a Certified AEDP Therapist and Certified AEDP Supervisor. She specializes in Complex PTSD, chronic Depression and Psychedelic integration. Liz thrives on fine-tuning her skills in her own individual supervision and while supervising others. Liz feels that AEDP has been responsible for her most memorable and meaningful breakthrough moments in sessions.

When supervising others, she loves supporting the therapist in finding their AEDP style within the theory. She is also passionate about investigating all paths to transformational healing and has been avidly researching the intersections and parallels of AEDP  & psychedelic-assisted therapy. She is MAPS trained, a member of the AEDP & MDMA Research Committee, and a founding member of the AEDP & Psychedelics Committee. In addition, she has trained in Holotropic breathwork and TRE.