Administrative Staff Bios

KSue Duncan
K.Sue Duncan, LMFT
Executive Director
K.Sue Duncan, MFT, has held the role of Executive Director since February of 2009. She came to TPI from JFK University where she served as Core Faculty, Dean, and Vice President. K.Sue has a private practice in Lafayette where she works with individuals, couples and groups.  In her spare time, she is an avid endurance cyclist and a cycle coach for Team in Training.
Whitney van Nouhuys
Whitney van Nouhuys, PhD, LMFT
Interim Clinical Director for the Post-Graduate Training Program
Whitney van Nouhuys, PhD, MFT has been a member of TPI since the early 90s and a supervisor since 2005. She was on The Sanville Institute’s core faculty and in various administrative positions, including dean, from 2009 until the PhD program closed at the end of 2018. She serves on TPI’s Supervisors Committee, is that committee’s representative to the Leadership Umbrella Group (aka TUG), and taught a self psychology didactic to staff therapists earlier this year. She has been in private practice in Menlo Park and Berkeley since 1981.      
Sierra Wilson
Sierra Wilson
Administrative Coordinator
Sierra Wilson has been the Administrative Coordinator at TPI since November 2019. She brings with her a wealth of experience in office management and a background working in medical/mental health settings. Sierra's currently working on her Bachelors in Psychology at Cal State East Bay.