Our Team

Learn more about each of our therapists

Each member our team brings their own unique approach and therapeutic expertise into the counseling office. As a practice, however, we share common values of genuineness, empathic attunement and affective engagement.

Learn more about our treatment approach and core values here >

Are We The Right Fit?

Finding the right “fit” is essential to successful therapy. In our experience, establishing a sense of safety and connection with your therapist is the first step toward healing and growth. You may want to explore our staff below and contact the therapist that feels right for you. Or you can contact us and we will gladly collaborate with you to find your best therapeutic fit.

Chad Alcorn, Psy.D.

With over 15 years as a licensed clinical psychologist, Dr. Chad Alcorn has extensive experience working with adolescents and adults in DuPage County. Based on his narrative as a boy growing up in Glen Ellyn, he understands all that is good and bad about this town. He is a graduate of Glenbard West and attended Butler University on a football scholarship. Upon graduation, he pursued pharmaceutical advertising and worked five years with Medical Economics/Thompson Publishing. With some discernment, he changed careers and attended Adler University in Chicago where he received a Masters (1999) and Doctorate in Clinical Psychology (2001). His internship was at the DuPage County Health Department where he practiced in in-home-family therapy. His postdoctoral work and early years as a psychologist were at the Central DuPage Pastoral Counseling Center where he was Director of Adolescent Services. During that time, he received a grant from the DuPage Community Foundation and published The Broken Superhero: Understanding Pride and Regulating Anger.  In 2006, he opened Alcorn and Allison Clinical Associates with his good friend and colleague, Seth Allison, LCPC, with whom he discusses theory and music. Chad is trained in EMDR Level 1 and 2. At the Center for Religion and Psychotherapy he received a certificate in Self Psychology.  He resides in Glen Ellyn, with his wife Rachel, and three children—Charlotte, Mira, and Soren. For better or worse, he has accepted suburban life including basketball at Healthtrack and golf at the Links with friends. He reads and plays harmonica. He likes dad- rock bands like Wilco.

Seth Allison, MA, LCPC

Seth Allison, is a licensed clinical professional counselor who received his master’s degree in clinical psychology (2001) from Wheaton College. He began his career with the DuPage County Health Department as a Clinician/Consultant, providing office and home-based family therapy to children and adolescents. Two years later, Seth entered into full-time private practice with Arbor Clinical Associates in Wheaton where he continued working with families, and began deepening his understanding of effective therapy with adults and couples. Seth co-founded Alcorn & Allison Clinical Associates, LLC in October of 2006 with his good friend and colleague Dr. Chad Alcorn, Psy.D. Seth has developed expertise in several therapeutic modalities including Emotion Focused Therapy, Attachment-Based Psychotherapy, Group Psychotherapy, and Psychoanalytic/Self Psychology. He resides in Glen Ellyn with his wife, Kelly, and their children, Willa and Wyatt. After the kids go to bed, Seth enjoys writing, playing, and listening to music. Recently, he founded an original indie-folk band, swore he would never draft another Bears player in his fantasy league, and purchased yet another guitar.

Billy Cleary, MA

Billy Cleary is a graduate from Wheaton College’s Marriage and Family Therapy program and is working toward MFT licensure under the supervision of Seth Allison, MA, LCPC. His therapeutic expertise, developed and enhanced in his clinical practice at Schaumburg Family Counseling Center, include working with families, individuals, adolescents, and children to increase self-esteem, build awareness of one’s choices, and improve family relationships. His approach to therapy comes from a belief that humans are wired to be in relationship with others, and that creating a space to share disagreements, confusion, and struggles strengthens relational bonds. He previously served overseas in Japan (2006-2012) in youth ministry working with children and adolescents, as well as teaching culture and language skills to individuals and groups of all ages. He transitioned to the U.S. (2012-Present) to further his ability to work with families, couples, and adolescents in a therapeutic setting. Billy lives with his wife, Emily, who he met while living in Japan. Additional loves in his life include coffee, studying different cultures, sports, and the outdoors. He’s climbed Mt. Fuji three times and has travelled to five different continents in the world. He hopes one day to equip his therapy room with an espresso machine and hot water pot for coffee or tea connoisseurs to add one more element to the therapeutic process. In the meantime, we’ll both have to bring our own.

Leslie Duff, MSW, LCSW

Leslie Duff is a licensed clinical social worker. She received her undergraduate degree from Purdue University and went on to earn her masters degree in social work from Loyola University Chicago in 2009. During her clinical training, Leslie specialized in work with adolescent females and the complex challenges they face.

For the next 3 years, Leslie honed her clinical skills in community mental health and residential treatment programs concentrating in trauma and attachment disorders. During this time, she deepened her ability to work not only with her clients, also with their families as they struggled to help their children.

Stephanie Fuchs, MA, LCPC

Stephanie Fuchs  received her MA from Wheaton College Graduate School in Clinical Mental Health Counseling with training emphases in child play therapy, family systems, and sexuality. She is working towards the Licensed Clinical Professional Counselor (LCPC) credential under the supervision of Seth Allison, MA, LCPC. Her clinical training was at Wheaton Youth Outreach, where she pursued her passion to work with children and adolescents in a community mental health context. During this time she received special training in crisis intervention, utilized evidenced-based practices, and integrated research into her clinical work. Stephanie has advocated for children and youth by presenting at scientific conferences on topics of group child-centered play therapy and the efficacy of healing models for traumatized youth.

With her deep love of travel, Stephanie had the opportunity to explore over ten countries and is looking forward to adding more to the list. Most recently, she went backpacking in Europe. Two years prior, she spent three months in Swaziland, Africa, where she mentored adolescents who were struggling with depression, self-harm, and post-traumatic stress disorder. A Southwest Florida native, Stephanie loves spending time outdoors as the Illinois weather permits and has some excellent bicycling accident stories to share. She is an avid listener of music and is continuously learning how to cook.

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Jenny Gresko Schevers, MA, M.Div, LCPC

Jenny Gresko Schevers grew up in New England and attended Wheaton College studying theology, psychology and art. Upon graduation she co-founded an intentional community in a poor neighborhood in Chicago which sustains a vital spiritual and social justice presence to this day. While living in community she earned her Master of Divinity from Garrett-Evangelical Theological Seminary in Evanston choosing this seminary because of its rich and diverse theological perspectives and because she could bike there from home. She earned her second graduate degree, a Masters in Counseling Psychology, after spending her own time as a client in therapy and finding incredible help and value in that work. She attended the California Institute of Integral Studies in San Francisco and interned at Haight-Ashbury Psychological Services where in addition to seeing clients she coordinated community projects such as emergency help to local residents when a fire leveled a portion of the neighborhood. Jenny returned to this area and has been in private practice for twenty years. Specializing in trauma, Jenny is certified in EMDR and trained as an Internal Family Systems therapist.

David Hendricks, MA, LCPC

David Hendricks received his master’s degree in clinical psychology from TIU. He began his career at the counseling center in Crystal Lake where he worked exclusively with adolescents dealing with anger management and adjustment issues with divorce. Later, he broadened his experiences working with families, couples and adults at the Village of Schaumburg Family Counseling Center. It was here that David began to deepen his clinical training working side by side with clients struggling with marriage, parenting, anger management, depression, anxiety, self-esteem, and communication.

Matthew Hyder, MA, LCPC, CADC

Matthew Hyder is a licensed clinical professional counselor and a certified alcohol and drug counselor with a Master’s degree in Clinical Psychology from Wheaton College.

Prior to coming to Alcorn & Allison, Matthew began his clinical career with inpatient psychiatric populations (2004 – 2006). He then transitioned to inner-city, non-profit work (2006 – 2010), where he counseled children, adolescents, and young adults suffering from a wide range of mental health and/ or substance abuse issues.  He achieved his certification in substance abuse and addiction counseling at that time.  Matthew transitioned to group private practice work in 2009.

Joel Marquart, MA, LPC

Joel Marquart, MA, LPC is a licensed professional counselor who received his master’s degree in clinical mental health counseling (2016) from Wheaton College Graduate School. During clinical training at the MBI counseling center in Chicago, Joel provided therapy to teenagers and young adults experiencing social anxiety, depression, substance abuse, ADHD, low self-esteem, complex life transitions, perfectionism and identity development struggles. Prior to graduate school, Joel worked for three years with adolescents and adults at White Pine Mental Health Center in Saginaw, Michigan.

Outside the office, Joel loves being in nature. Whether it’s fishing on a lake, cooking over a campfire, or reading in the shade of a tree, the outdoors inspires and rejuvenates him better than a cup of coffee. If Joel has to be inside on a weekend, he is probably making a big mess in the kitchen as he attempts yet again to realize his fantasy of becoming a gourmet chef while singing classic Motown hits (he thinks he can sing harmony). He also has secret aspirations to run the Boston Marathon…when he gets around to it.

J. Brooke Siwula-Wright, Psy.D.

J. Brooke Siwula-Wright is a licensed clinical psychologist who is passionate about working with children and their families. Fifteen years ago, she helped develop Brooke’s Place for Grieving Young People, Inc.. As the namesake, she provided services to children and their families after the death of a loved one. She received bachelor’s, master’s, and doctoral degrees in clinical psychology from Wheaton College where she was inducted into the Wheaton Scholastic Honor Society and awarded the doctoral merit scholarship annually. Brooke’s research focuses on grieving adolescents’ coping. She presented her work at six conferences, and published in the Journal of Professional Psychology and The Concise Corsini Encyclopedia of Psychology and Behavioral Science. Brooke’s clinical practicum training at Central DuPage Pastoral Counseling Center and Heartland Counseling Center/Conley Outreach Community Services focused on psychotherapy, psychological assessment, and crisis intervention services. For predoctoral internship, she trained at The Children’s Home Society of Idaho and Northwest Neurobehavioral Health in Boise, Idaho. Her work there included assessment of neurobehavioral differences (such as autism, ADHD, and learning difficulties) and therapy with children and families.

Brooke currently specializes in psychological and neuropsychological testing for children and adolescents, community trainings, and crisis intervention. She provides therapy for infants, children, and adolescents and their families facing a variety of difficulties.

In her free time, she enjoys being outdoors, camping, traveling, music, theater, and meeting new people. As an avid sports fan with a lifetime loyalty, you may catch her in a Colts jersey.

If you want to know more please feel free to contact us.