Harrisburg Team

Tiffany Dampier, CADS, MS – Clinical Supervisor

Tiffany Dampier is a Pennsylvania Board Certified Alcohol and Drug Counselor with a Master’s Degree in Human Services and specialization in Mental Health Counseling from Capella University. She earned her Bachelors of Science degree in Social Psychology from Park University while serving active duty in the United States Air Force, Little Rock, Arkansas.

Since returning to her home state of Pennsylvania in 2010, Tiffany has been utilizing her military and professional experience to guide her clients through their own personal battles of life. Her clientele consists of individuals who present with depression, anxiety, ADHD, PTSD, codependency, relationship issues, and/or substance abuse. Tiffany also facilitates the Dual Diagnosis Intensive Outpatient group (DIOP) at Mazzitti and Sullivan Counseling in the Harrisburg office.

Sylvester Wilson, MHS

Sylvester works with adults dealing with Substance Use Disorders in our Harrisburg office. He strongly believes that his educational training coupled with years of professional counseling experience and his own long-term recovery from drug and alcohol addiction have prepared him well for his time with Mazzitti and Sullivan. Sylvester is a Counselor, Certified Assistant Alcohol Level 2 and House Manager with over 10 years of work experience. Currently, Sylvester is a primary Drug and Alcohol counselor. He leads both the Adult Intensive Outpatient Program as well as Mazzitti and Sullivan’s Aftercare group.

Stephanie Thorn, BA

Stephanie is the Primary Group Facilitator of the Adult Partial Hospitalization Program at our Harrisburg office, which is an Intensive Program for clients presenting with Acute Substance Use Disorder symptomology that are severe but do not require 24-hour monitoring. Stephanie is passionate about helping clients to develop a stable foundation for long-term sobriety through engagement in an active program of recovery that extends beyond treatment. Along with this, Stephanie believes that addiction is a family disease and that family recovery is an essential part of the healing process for everyone involved. She is dedicated to providing support and resources to family members as a part of treatment process for the individuals she works with in guiding them towards long term recovery. Stephanie holds a Bachelor’s degree in Psychology and her background includes a range of experience including family, group, and individual counseling prior to joining the Mazzitti and Sullivan team in 2017.

Matthew Walters M.S., LPC

Matthew Walters graduated in 2013 from Cairn University with Masters in Christian Counseling. While completing his Masters program he began at Pyramid Healthcare working at the Quakertown Adolescent Inpatient facility. Following that time, he has worked in the Allentown Outpatient facility providing mental health and substance abuse therapy, as well as in the Bristol Outpatient facility providing various level of substance abuse treatment all within the Pyramid Healthcare system. He transitioned to Mazzitti and Sullivan- Harrisburg location in 2018 and currently serves as the Dual Diagnosis Outpatient Counselor. Matthew has a passion for helping clients work through hurt and adversity, in order to help them find healing and hope, as they pursue changes that will bring them a brighter future.