Health + Human Service & Evaluation + Consulting
TriWest is a human service evaluation and management consulting company.

The TriWest Team


Tonya Aultman-Bettridge, PhD
Principal
 David Bartsch, PhD
Senior Fellow
Todd Camnitz, BA
Consultant 
 Timothy Dittmer, PhD
Managing Principal


  Michael Hadfield
Consultant
Erin Hall, MS
Senior Consultant
Mark Heller, BBA
Vice President & Controller
Joseph Johnson, MA
Consultant



Andrew Keller, PhD
Founder
 Melanie Marin, MPA
Senior Consultant
Suki Martinez-Parham, MEd
Senior Consultant



Cassie Morgan, MSW, LCSW
Consultant 










 Diane Retz, MPA
Consultant
 Peter Selby, PhD
Managing Partner
 Sam Shore, MSW
Principal
 Jesse Sieger-Walls, MSW, LCSW
Consultant


 Kathy Sternbach, MBA, MEd
 Partner
Lisa Tomaka, MS, MPA
Senior Consultant
Stephanie Touch, BA
Operations Assistant 
Kelsi Urrutia, LMSW
Consultant




 Bill Wilson, MSW
 Consultant
Jim Zahniser, PhD
Founder and Principal