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Outpatient Therapists

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Dr. Joseph E. Peters

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 is currently not accepting new patients.*

Matthew Maurer

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, and medical assistance insurances. 

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Victoria Phillippi

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. 

Rose Colatriano

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 is not currently accepting new patients, but will open her schedule soon. 

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Jennifer Winston

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. Jennifer accepts medical assistance insurance and is currently taking new patients.

Susan Hughston-Roberts

Susan is a licensed clinical social worker (LCSW). She graduated with her bachelor's 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. 

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Timothy Evers

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

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. 

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Elizabeth French

Elizabeth is a Nationally Certified Counselor (NCC).Elizabeth is a graduate of Geneva College. She has been working 5 years as a counselor and has been at WPPC just under 1 year. She work is in our outpatient office and for our Positive Steps program. Elizabeth takes medical assistance insurance and is accepting new patients. 

Dianna Stafford

Dianna is the newest addition to our outpatient staff. She has an associate's degree in education from CCBC, a bachelor's degree in psychology from Washington and Jefferson College, and a master's degree in counseling psychology from Geneva College. Dianna has worked as a Behavioral Specialist for Life Management and Northwestern Human Services where she developed Behavioral Treatment Plans for individuals with Autism and developmental disabilities. She taught in the Psychology department at Robert Morris University and Community College of Beaver County. Before joining WPPC, Diana had a private practice offering CBT for anxiety, marriage and family therapy, grief therapy, depression, and eating disorders.    

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Positive Steps Therapists (School Based)

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 Melissa Stewart

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 Bollen

Lori is the school-based District Supervisor for Rochester Area Schools. She graduated from Geneva College with a bachelor's degree in psychology and earned her master's degree in counseling from Capella University. She has been with WPPC for 14+ years and specializes in working with children, adolescents, and their families. Lori's main area of focus is anxiety disorders, but she does address other behavioral health concerns. She has over 17 years of experience in the mental health field working with children and adolescents with mental health needs.

She can be reached at 724-775-7500 ext. 1949 or by email at: bollenl@rasd.org

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Vanessa Casper

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 23 years of experience working in the mental health field and has been with WPPC for over 13 years. Vanessa is also the vice-president of the "Queen B Project". This program helps mothers and families dealing with infancy loss/grief. She can be reached by phone at: 724-857-7500 ext: 4164.

Angela Parker

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: aparker@sssd.k12.pa.us.

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Dawn Brendle

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: dbrendle@nbasd.org