Here to help. Here to Listen.

Outpatient Therapists

Joseph E. Peters PhD, ABPP, ACS

J. Peters headshot.jpg

In addition to his clinical work, Dr. Peters has extensive teaching and supervisory experience in the training of future clinicians and is a professor emeritus of graduate counseling at Geneva College.  He has over 40 years of professional experience; is board certified in clinical psychology; is an approved clinical supervisor; has over 50 presentations and publications; and has served as co-ordinator of an interdisciplinary pain management program, chair of the research and development program, director of clinical psychology training, and president of the medical staff at the Lebanon VA Medical Center.  Dr. Peters' clinical practice utilizes an eclectic, individualized, and personalized orientation and addresses the full spectrum of psychological conditions with particular emphasis on anxiety, depression, trauma and coping with chronic medical illness.  Dr. Peters accepts most major insurances and sees patients exclusively from our Beaver office.


Matthew is a Licensed Professional Counselor (LPC) and a Nationally Certified Counselor (NCC) with almost a decade in the mental health field working with children, families, and couples of all age ranges.  He utilizes Cognitive Behavioral Therapy (CBT), Acceptance and Commitment Therapy (ACT), and other Evidence Based Psychotherapy Methods to help clients achieve their goals.  By using an eclectic modality of counseling he is able to provide the most effective, treatment for each client, by utilizing a holistic approach and various range of therapeutic approaches; this allows for an individualized approach to help ensure the most current and efficacious treatment methods are being utilized.  Matthew has a flexible schedule, including evening appointments, so that he is able to ensure that his clients are able to receive the care that they need.  Matthew accepts most major insurances, medical assistance insurances and works out of our Beaver office.  

Matthew Maurer, LPC

Victoria is a US Army combat veteran that served eight years active duty as a combat medic and a flight medic.  She received her Bachelor of Science in Sports and Health Sciences from American Military University.  She then received her Master of Science in Counseling Psychology from Chatham University.  She is a Licensed Professional Counselor (LPC), a Nationally Certified Counselor (NCC), and a Certified Clinical Trauma Professional (CCTP).  Victoria specializes in anxiety and depression disorders, mood disorders, trauma, and PTSD counseling for both civilian and veteran/military individuals.   Victoria accepts Optum, Highmark, Aetna, UPMC, Beacon, Cigna, United Healthcare, and MA/BHO.  Victoria works out of our Baden and Beaver offices, and also sees children through our School Based Behavior Health program.

Victoria Phillippi, LPC

Rose Colatriano, LCSW


Rose is a licensed clinical social worker (LCSW) in the state of Pennsylvania. She graduated with a Master of Arts in Counseling Psychology from Slippery Rock State University in 1987. She also graduated with a Master of Social Work Degree in 1995 from the University of Pittsburgh. Rose has been a therapist at Western PA Psych care since 1996.  Rose accepts most health insurances including MA, UPMC, VBH, and Highmark. Rose sees patients exclusively from our Beaver office.

Jennifer Winston MA, LBS

 Jennifer earned her BS in Psychology from Penn State University and MA in Counseling  from Slippery Rock University. She serves as the lead clinician for our Positive Steps School Based Program in the Ambridge High School. Jennifer has been working at WPPC for 14 years now. Her treatment focus is CBT and DBT  for Anxiety, Depression ,  Adjustment Disorders. She also has a special interest in working with the LGBTQ population. 

Susan Hughston-Roberts LCSW

Susan is a licensed clinical social worker (LCSW) who recently started with our practice. She graduated with her bachelors and master's degree in social work from the University of Pittsburgh. Susan has been serving patients in outpatient practice for the past 8 years. She accepts most major insurances, medicare, and medicaid. We are excited to have Susan with our team seeing patients in the Baden office. 

Timothy Evers, MA

Tim is an outpatient therapist working with WPPC for over 14 years now. He has over 35 years of experience working in the human services field. He specializes in therapy with clients with High Functioning Autism, ADHD, Oppositional Defiant Disorder, and Parent-Child Relationship problems.  Tim also recently obtained a Sex Offender Treatment Provider Certificate through the International Trauma Training Institute (ITTI). Tim presently serves patients through outpatient therapy and School Based Behavioral Health therapy after having done Wrap-Around Services for over 15 years. Tim also is a supervisor and Community Liaison for WPPC working with multiple schools, agencies, and organizations. 

Valerie Grabowski, LCSW

Valerie is a licensed clinical social worker (LCSW). She earned her master’s in Social Work is from the University of Pittsburgh, where she also worked as an outpatient therapist for Western Psychiatric Institute and Clinic.  Valerie has been in treating patients in private practice for 22 years.  She is passionate about helping people; she believes that each client possesses the capacity for personal growth, change, and has the right to be happy.  By helping clients realize obstacles to happiness and engaging them to actively work towards improvement, she has helped many people access their happiness within.  Valerie has experience working with all age groups, children to geriatric. 

Positive Steps Therapists

(School Based)

Melissa Stewart LSW

Melissa is the district supervisor for Blackhawk School District. She earned her bachelor's degree from Edinboro University and her Master's degree in Social Work from the University of Pittsburgh.  Melissa is a Licensed Social Worker with over 15 years experience in the mental health field.  She has been with WPPC for 12 years and specializes in treating children and adolescents with developmental and behavioral disorders.  Melissa can be reached by phone at 724-843-1700 ext. 3600

Lori's is a therapist with WPPC serving patients in the Rochester school district. 

Lori Bollen

Vanessa Casper MS

Vanessa is the school based district supervisor for Aliquippa. She graduated from La Roche College with a bachelors in psychology then earned her masters degree from Duquesne University. She also has a masters certificate in addiction studies from the University of South Dakota. Vanessa has over 22 years of experience working in the mental health field and has been with WPPC for 11 years now. She can be reached by phone at: 724-857-7500 ext: 4164. 

Angela is the district supervisor and licensed behavioral specialist in the School Based Behavioral Health outpatient office at South Side Area School District. She has been working with WPPC for 12 years.  Angela earned her bachelor’s degree from the University of Pittsburgh and her graduate degree in counseling from the University of California.  She can be reached at: 724.573.9581 ext. 1404 or by email at:

Angela Parker MED, LBS

Dawn Brendle MA, LBS

Dawn is the district supervisor and licensed behavioral specialist in the New Brighton Area School District. She has been working with WPPC for 11 years. Dawn specializes in serving children with an autism spectrum diagnosis and has been providing therapy in this area for 21 years. She has been New Brighton’s district supervisor for the past 5 years. After first earning her bachelor’s degree and teaching certificate in Elementary Education from California University of PA she continued her education at Geneva College where she earned her Master’s Degree in Psychology. Dawn is currently pursuing her Ph.D in Instructional Management from Robert Morris University. To contact Dawn, she can be reached at 724-846-1050 ext. 330 or you can email her at:

Additional Services

Intensive Behavioral Health Services (IBHS)

For any questions or concerns regarding the IBHS Program, please contact
Brooke Rodgers at 724-728-8400