Founder, LCPC

Vic is a DBT-Linehan Board of Certification, Certified Clinician and has many years of experience providing full protocol DBT and DBT-Prolonged Exposure.

Individual & Group Psychotherapist, LCPC

LPC, Individual & Group Psychotherapist Jessica Dahldorf, is an LPC with years of individual and group experience in Dialectical Behavior Therapy.

LCSW, DBT Staff Therapist

Jimmy earned a B.S. in Neuroscience before working as an EMT and as an academic and test-prep tutor.

LCPC, Individual DBT Psychotherapist

Ryan is a Licensed Clinical Professional Counselor and clinical supervisor with extensive experience providing individual, family, and group mental health services to adults. He is a comprehensive Dialectical Behavior Therapy (DBT) provider and supervises several clinicians at Great Lakes Treatment Center.

Over the course of his career, Ryan has utilized DBT and other evidence-based interventions to help individuals struggling with complex mental health challenges. With over 10 years of experience in the mental health field and more than 6 years specializing in DBT, he works with adults experiencing borderline personality disorder, PTSD, substance use disorders, emotional dysregulation, anger management, suicidal ideation, self-harm behaviors, and trauma.

Ryan has a considerable background in inpatient and residential mental health settings prior to joining Great Lakes Treatment Center. He has extensive experience providing comprehensive DBT services and has received specialized training in both the DBT Substance Use Disorders protocol and DBT Prolonged Exposure (DBT-PE) for PTSD. This breadth of experience allows Ryan to effectively assess client needs and collaborate with clients to build lives worth living.

CADC and DBT Staff Therapist

Christine is a passionate advocate for addiction treatment who is completing her CADC program at Wright College and interning for Great Lakes Therapy.

MA, Staff Therapist

Katie is a master’s level practitioner with years of DBT individual and group experience for adults, adolescents, and individuals with substance use disorders.

LSW, DBT Staff Therapist

Ashley graduated from the University of Chicago’s Master of Social Work program in 2024. She has been trained in Contextual Third Wave Behavioral Therapies including DBT, ACT, and Motivational Interviewing. Ashley provides full-protocol DBT services to adult and adolescent clients at GLTC and has previous social work experience in community mental health and higher education counseling settings.

Ashley is passionate about working with individuals with trauma histories and self-harm behaviors. Ashley’s stance in therapy is rooted in the relationship and she believes that growth and healing can be achieved through empathy and connection. Ashley also strongly believes in the Harm Reduction principle of “meeting clients where they are but not leaving them there.”

Ashley was drawn to DBT because of its emphasis on expanding individuals’ emotional and behavioral responses through acceptance and change strategies. She believes that everyone has the power to enhance their lives through commitment and collaboration.

Outside of the therapy room, Ashley enjoys spending time in nature, watching documentaries (and guilty-pleasure reality TV), and visiting with family and friends. In addition, Ashley loves animals and considers pets one of the greatest support systems, so if you have a pet, Ashley will want to see photos! 

CMHC M.A,

Tommy graduated with a master’s degree in clinical Mental Health Counseling from Adler University in Chicago, IL in 2025. He has received advanced training in DBT and provides DBT to adolescent and adult clients at Great Lakes Therapy Center.

B.A. CMHC M.A. Candidate

Practicum Student• Clinical Mental Health Counseling Student
• Group Co-Facilitator & Psychotherapist-in-Training

Angelina is a second-year graduate student in the Clinical Mental Health Counseling program at Adler University, where she is on track to earn her Master of Arts in 2026. She is currently completing her practicum at Great Lakes Therapy Center as she prepares for LPC licensure.

Angelina is supervised by Ryan Momberger, LCPC. She is passionate about working with high-risk and underserved populations and strives to ensure every client feels seen, supported, and never alone. Her therapeutic style is warm, empathetic, and client-centered, emphasizing the healing power of a strong and authentic therapeutic relationship.

Drawn to Dialectical Behavior Therapy (DBT) through her interest in mindfulness and actionable skills, Angelina values the transformative impact of skills groups. She believes deeply in each person’s capacity for inner wisdom, resilience, and peace—even when they may not recognize it yet.

Outside of her clinical work, Angelina enjoys reality TV, sharing meals with friends, and exploring creative hobbies like arts and crafts. She believes supportive relationships can change lives and hopes to offer that same sense of care and connection to her clients.

Karissa is a recent graduate of the University of Chicago’s Master of Social Work program. She is trained in Contextual Third Wave Behavioral Therapies, including DBT, ACT, and Functional Analytic Psychotherapy, and is currently under the supervision of Victoria Kessinger, LCPC. She has experience working with unhoused individuals and survivors of sexual violence.

Karissa believes in the power of transforming our pain into meaning. Drawn to DBT through her experience as a client, she is passionate about accompanying others on their journey to create a meaningful life. Her approach centers on the therapeutic relationship and working together to learn how to effectively manage all aspects of our experience - especially those that are painful.

Karissa highlights the importance of mindfulness in her work (and personal life), along with reconnecting with our bodies during difficult emotions. She resonates with DBT’s stance that people are doing the best they know how, given the current context, and is committed to finding new ways of relating to our experience and expanding our behavioral repertoire.

When they are not working, you may find Karissa running by the lake, reading a good book, cooking with her partner, or making art collages.