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- Cognitive Behavior Therapy and Eating Disorders, Christopher Fairburn, MD, Centre for Research on Eating Disorders at Oxford (CREDO)
- Cognitive Processing Therapy for PTSD, Dr. Kathleen Chard & CPT Web
- Internal Family Systems, Frank Anderson, MD
- Restorative Justice Theory and Practice, Columbia School of Social Work, Vivianne Guevara
- Foundations of Grief Therapy, Katherine Shear, MD, Columbia School of Social Work
- Motivational Interviewing, Faculty, Columbia School of Social Work
- Extensive experience in DBT-based skills-training
- Languages: French, English
Licensed Clinical Social Worker, New York State Department of Education. 2026
Licensed Master Social Worker, New York State Department of Education. 2022
Columbia School of Social Work, Columbia University, New York, NY | Graduation: May 2022
Master of Science in Social Work, Advanced Clinical Practice.
Columbia College, Columbia University, New York, NY | Graduation: May 2019
Bachelor of Arts, English. Cum Laude.
CLINICAL
Mount Sinai Adolescent Health Center, New York, NY | 3 years
Institute for Advanced Medicine, Mount Sinai Hospital, New York, NY | 2 years
ACADEMIA
Icahn School of Medicine, New York, NY
- Co-Presenter – Posttraumatic Stress Disorder in the Pediatrics Office | Apr. 2026
- Faculty — Practice of Medicine | Aug. 2024 – Jun. 2025
Center on Poverty & Social Policy at Columbia University, New York, NY
Racial Justice Research Assistant, Presenter — Poverty & Structural Inequities on American Indian and Alaska Native Homelands | Sep. 2021 – May 2022

Alder Lewis, LCSW

contact@alderlcsw.com

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Alder Lewis, LCSW