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

The TriWest Team


Gabriel Acevedo, PhD
Senior Consultant
 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
Partner, Chief Leadership Officer and Founder