Tammi Van Hollander, LCSW, RPT-S™, RST-C/T

Tammi Van Hollander, LCSW, RPT-S™, RST-C/T, is a licensed clinical social worker, Registered Play Therapist Supervisor, and Registered Sand Therapist Consultant/Trainer with over 25 years of experience working with children, families, and individuals. She earned her Master of Social Work from the University of Pennsylvania and is internationally recognized for her innovative contributions to play therapy. Tammi is the author of Casey’s Greatness Wings and The Bibliotherapy Toolbox: 100+ Creative and Playful Story-Based Interventions to Help Kids Create Safety, Overcome Challenges, and Build Resiliency. She is also the creator of Greatness Sticks, a tool designed to foster resilience and self-esteem in children. A leader in the field, Tammi played a pivotal role in co-teaching the first-ever Sandtray therapy class in China, helping introduce this transformative modality to the country. She is founding board member of the World Association for Sand Therapy Professionals (WASTP), an organization dedicated to upholding the integrity of sand therapy through research, training, ethical standards, and global community building. Tammi is a sought-after international speaker and delivered her first TEDx Talk in October 2023, titled Stories in the Sand: Healing Trauma, Anxiety, and Grief.

Speaker Disclosures:
Financial: Tammi Van Hollander is the owner of Main Line Therapy, LLC. and has employment relationships with the Expressive Arts Therapies and the Mid-Atlantic Play Therapy Institute. She receives royalties as a published author. Tammi Van Hollander receives a speaking honorarium and recording royalties from PESI, Inc. She has no relevant financial relationships with ineligible organizations.
Non-financial: Tammi Van Hollander is a member of the Association for Play Therapy and the National Association for Social Workers. She is a board member of the World Association for Sand Therapy Professionals and a program committee chair for the Specialists of Schools.