About Us


At MST Services, we're on a mission to transform the lives of troubled youth and their families. Our approach, Multisystemic Therapy®, is scientifically proven. We'll do whatever it takes to reach families in need so that their children can realize their potential.



Unquestionably, the disparity in minority youth coming in contact with the justice system is a problem. Multisystemic Therapy (MST) has been shown to be part of the solution. MST is a family-driven treatment that is culturally responsive and centered in homes and communities. When partnered with law enforcement and the juvenile justice system, it plays a unique bridge-building role in achieving shared outcomes for minority youth, families, schools, and communities at large. For more information on how MST helps combat racial disparity in the juvenile justice system, click here.


Our team of Ph.D. and Master level mental-health specialists train providers to implement Multisystemic Therapy. We deliver ongoing support and consultation to our partners to ensure the highest quality clinical outcomes. In many cases, MST collaborates with Network Partners, which are prominent youth services organizations that are responsible for clinical quality and consistency.

Program support & training
Quality assurance services
Hiring & retaining staff
Marketing & public relations
Budgeting & business planning

Meet MST Services 

Research Leadership


Scott Henggeler, Ph.D. Co-Founder and Developer of MST

Dr. Henggeler has published nearly 300 journal articles, book chapters, and books. He is the recipient of prestigious national awards including Points of Light Foundation President’s Award, Families Count Award, and he was named one of the twelve people who saved rehabilitation by the American Society of Criminology. Dr. Henggeler has also served on numerous editorial and review boards. He received his Ph.D. from the University of Virginia.

Sonja Schoenwald, Ph.D. Co-Founder

Dr. Schoenwald, a co-founder, has published extensively and served on numerous editorial, research, and advisory boards. She obtained her undergraduate degree from Stanford University and her doctoral degree from Duke University.

Melisa Rowland, M.D. Co-Founder

Dr. Rowland is a recognized leader in the field of psychiatry. She received a Bachelor of Science Degree from Louisiana State University and a medical degree from the University of South Florida College of Medicine.

Senior Management


Brenda Szumski, MSW Executive Director

Ms. Szumski received her master's in social work from the University of Denver and her MBA from the University of Wisconsin-Milwaukee. She joined MST Services in 2007.

Bernie Centeio, MSW Adaptations Director

Ms. Centeio holds Bachelor of Arts degrees and a Master of Social Work degree from the University of Hawai’i at Manoa. She joined MST Services in 2007.

Michelle Dean, M.S. Team Support Services Director

Ms. Dean received her M.S. in Rehabilitation Counseling from UNC-Chapel Hill. She joined MST Services and began implementing our juvenile treatment programs in 2006.

Lori Moore, M.A. Network Partner Support Director

Ms. Moore began her work in MST in 1999 at Adelphoi Village, PA, as an MST Therapist, there she was promoted to the MST Supervisor and MST Expert positions. Lori joined MST Services in June of 2008 as an MST Expert, was promoted to the Manager of Network Partnership position, and recently was promoted to the Director of the Network Partner Support (NPS) Division. Lori has over 30 plus years’ experience working with children, youth, and families in a wide range of community-based settings.

Thomas Pietkiewicz Director of Business Development

Mr. Pietkiewicz has a background in leadership, business strategy and new business development. In addition to serving six years in the United States Marine Corps, he received a bachelor’s degree from the United States Naval Academy and an MBA from Harvard Business School.

Laura Shortt, Ed.D. Clinical Resources Director

Dr. Shortt started in 2000 as an MST therapist serving families in her current community of Clarksville, TN. She joined MST Services in 2006. Laura has a passion for clinical supervision and teaching mental health professionals. She received her M.S. in Community Psychology from Austin Peay State University and her EdD in Counselor Education and Supervision from Argosy University.

Keller Strother Co-Founder & Director

Mr. Strother, as a Co-Founder of MST Services, has been a driving force in scaling the dissemination of Multisystemic Therapy. He holds a bachelor of arts, bachelor of science and master’s degrees from Stanford University and an MBA from Duke University.

Network Partner Managers

Kellie Allison, M.A., LPC
Vice President 
Betsy Clipper, 
Vice President  
Melina Fazzolari-Napoli, LCSW-R, CCTP
 Jamie Bunch-Sanfilippo, M.A.
Susan Dee, LCSW
Amy Myers, M.S.
Kimberly Pascucci, LCSW-R 
Vice President 
Laurie Spivey, M.A., M.A.Ed
Joshua Chinitz, Ph.D.
Vice President
Marisa Licata, LCSW
Joanne Penman, M.Ed., LMSW
Vice President
Angelia Watson, M.A.
Manager of MST-CAN Transport
Liz Buchanan, LCSW

MST Consultants

  • Amber Stark, MA, LCMHC
  • Amelia Lower, MEd, LPCC, NCC
  • Beth Gaudette, MSW
  • Brad Bagley, MS, LMFT
  • Brandon Becker, M.A.
  • Elisa Angevin, LCSW
  • Janelle McKinnon, LMSW
  • Jeff Randall, Ph.D.
  • Joshua Leblang, LMHC, LCPC
  • Melissa Golba, M.A.
  • Kelly Freeman, LCSW
  • Kelly Quednau, Psy.D
  • Kimberly Duncan, MSW
  • Lori Bargesser, MSW, LMSW
  • Lydia Peterson, MSW
  • Marie Andersen-Strait, LMSW
  • Melissa Golba, M.A.
  • Melissa McGreal, LCSW
  • Michael Mulqueen, LCSW-R, SIFI
  • Michelle Jarrouj-Weaver, MS
  • Michelle Robinson, MS
  • Morgan Guy, LMSW
  • Nick Angers, LCPC
  • Richard Aucoin, Ph.D.
  • Sandy Crotts, M.S., NCC, LPC
  • Sara Epperson, MA
  • Wyvetra Smith, MAPC

Operations and Development

  • Adamaria Palma, Administrative Support Specialist
  • Brina Joiner, Operations Coordinator
  • Chris Hamel, Ph.D., ITM Implementation Manager
  • Courtney Chapman, Operations Manager
  • D. Kelley, Staff Accountant
  • Lin Hurt, Training Assistant
  • Melanie Duncan, Ph.D., Program Development Coordinator
  • Nancy Hill, HR Manager
  • R. Howard, Accounting Manager
  • Randy Hurst, IT Manager
  • Sedgrid Lewis, M.A., Program Developer
Find out what MST Services' juvenile treatment programs can do for your community Contact Us