Diane Tehan, MA, LCMHC

Director of Strategic Development, Counselor Supervisor, & Licensed Clinical Mental Health Counselor

Diane Tehan moved from the U.S.A. to Thailand with her family in 1991 and is a member of Wycliffe and SIL International.  Living, working, and raising five children in Thailand has provided many rich and varied international living experiences. Diane has been a counselor at Cornerstone since September 2004 and an SIL Global counselor since 2003. Diane loves nature, gardening, arts (especially quilting), learning all kinds of things, living in a human body, enjoying close friendships and eating vegetables.

Diane will not be taking clients during 2020 in order to serve at Cornerstone in other ways.


  • MA (Masters of Arts) in Clinical Psychology, 2002 Wheaton College, Wheaton, Illinois, USA
  • BM (Bachelor of Music) in Performance, 1978, University of Kansas , Lawrence , Kansas , USA


  • Licensed Clinical Mental Health Counselor (2003), North Carolina, USA
  • Licensed LCMHC Supervisor (since 2018), North Carolina, USA

Specialized Training

  • Grief and Loss
  • Trauma (trained in EMDR)
  • Stress and Transition
  • Attention Deficit Disorders (ADD/ADHD)
  • Personality Typologies (Enneagram, DiSC, MBTI)
  • Counselor Supervision

Counseling Interests and Experiences

  • Emotional Development and Expression
  • Body Awareness and Mindfulness
  • Relationship Improvement
  • Communication Skills
  • Brain Health