A long, flowing black, white, and sage woodcut form by Abraham McCowan.
Internal Family Systems

Tammy Sollenberger

MA · LCMHC

Tammy Sollenberger is a Licensed Clinical Mental Health Counselor and IFS Certified Supervisor based in Dover, New Hampshire. She authored The One Inside: Thirty Days to Your Authentic Self and hosts the popular podcast The One Inside. She co-authored a chapter on integrating the Enneagram with IFS and provides individual IFS consultation for therapists seeking certification.

Training & certifications

  • IFS Certified Therapist
  • IFS Certified Supervisor

Specialties

Depth orientation

Tammy integrates contemplative spirituality, centering prayer, and Enneagram typology with IFS, creating a depth-oriented approach that explores the spiritual dimensions of Self-energy and authentic selfhood.

Sollenberger’s approach Preparing for a first session with Sollenberger
For clinicians and organizations

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