Addiction therapists & psychiatrists in Oak Brook, IL

Hi, I’m Gretchen, a board-certified Psychiatric-Mental Health Nurse Practitioner (PMHNP, ANCC) with a Master of Science in Nursing from Lewis University. I work with individuals, teens, and families navigating anxiety, depression, trauma/PTSD, ADHD, and substance use concerns, providing care in both English and Spanish. I bring experience from emergency departments, inpatient units, outpatient clinics, and private practice, and I strive to create a safe, judgment-free space where clients feel heard, respected, and supported. I value collaboration and flexibility, tailoring each session to your needs so you can feel empowered to make meaningful changes.

Hi there! I have been a therapist for about 25 years (MSW- Western Michigan University). I feel grateful to have such meaningful work and honored to walk alongside such a variety of people on their journeys. My clients have described me as irreverent, honest, and caring.

Many folks come to therapy in times of crisis and others come because they are looking for a neutral place to talk and process a wide range of life experiences including trauma, anxiety/depression, substance concerns, and relationship issues.

In my non-work hours you'd find me spending time with my elementary age kiddo and our dog, listening to live music, swimming in Lake Michigan, or finishing up a good jigsaw puzzle!

1. I am committed to providing a supportive and inclusive environment where everyone feels respected and valued. My practice celebrates diversity and is dedicated to understanding and addressing the unique cultural and personal needs of each patient. At my practice, i understand that everyone faces challenges in life. My goal is to empower you and tap into your own skills to problem-solve and move forward. I believe in creating opportunities for growth and healing through a collaborative approach. When it comes to prescribing medication, My philosophy is to prioritize minimal intervention with maximum benefit. I aim to find the most effective treatment plan tailored to your needs, minimizing medication while maximizing therapeutic outcomes.

Diana Lankenau has a Master of Science in Nursing from Florida State University and Chamberlain University. She has a Bachelor's in nursing from University of Miami. BA in Psychology from Florida International University. She is Board Certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-BC).

My style is eclectic and strength based. I see human nature as intrinsically good. Sigmund Freud said we are bio-social animals. I believe a great deal in listening to one’s self talk. The more positive our dialogue with ourselves is, the more positive our dialogues with others and our lives are. I’m also experienced in CBT, DBT, MI, Solution Focused, ACT, Gestalt, Interpersonal, and person-centered counseling.

My training includes lots of wonderful supervision and workshops, a three-year certificate from the Gestalt Institute of Chicago, and two one month intensives with Virginia Satir, the founder of family therapy. Virginia taught that exploring the self is like mining gold. We all have gold inside of us. That is our basic goodness. A lot of emotional suffering is the result of being detoured from that basic goodness.

A Grounded Space For Clarity and Support

Welcome- I'm glad you're here. I'm a Licensed Clinical Professional Counselor and board-certified, registered art therapist (ATR-BC) with a masters degree in art therapy, and over 20 years of experience providing individual therapy to adults. I work with people navigating anxiety, grief, life transitions, and long-standing emotional patterns. I offer a grounded, relational style that supports both coping and deeper self-understanding.

Dr. Opelt earned his Ph.D. in Counseling Psychology at New Mexico State University after completing his Master’s of Science in Educational Psychology: Community Counseling from the University of Wisconsin - Milwaukee. During his graduate training, he earned certifications in Trauma Counseling and Multicultural Knowledge Basis in Mental Health Practices, and a graduate minor in Integrated Behavioral Health. Dr. Opelt has completed postdoctoral fellowships in research in Rehabilitation Psychology, with an emphasis on Multiple Sclerosis, at Johns Hopkins School of Medicine, and in clinical Rehabilitation and Pain Psychology at MedStar Health National Rehabilitation Hospital. He has focused his clinical work on adults who have concerns about insomnia, cognitive impairment, addiction, LGBT+ concerns, caregiver support, transplants, burn survivors, cancer, musculoskeletal diseases like MS and Parkinson’s disease, and those who have amputations. He is a licensed psychologist in Maryland and Illinois.

Hi, I’m E. C. Kissner — and if you’re someone who feels accomplished on the outside but stretched thin on the inside, you’re in the right place. Many of the people I work with are navigating burnout, transitions, stress, uncertainty about next steps, or a sense that life’s moving faster than they can keep up with. You want clarity, balance, and a way to turn insight into real-world change, and you want a space that meets you where you are — respectful of your identity, your experiences, and your goals.

I am a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) with over a decade of experience in mental health care, supporting individuals across inpatient and outpatient settings. Through my work, I have cared for clients with a wide range of needs, including chronic and severe mental health conditions, and I understand how overwhelming it can feel to navigate symptoms while trying to maintain daily life.

My care philosophy is centered on partnership. Treatment is not about taking over your care, but about working with you to explore your symptoms, goals, and values. Together, we develop a treatment plan that feels respectful, personalized, and empowering. If you have concerns or hesitations about medication, we will discuss all available options openly and thoughtfully, moving at a pace that feels right for you.

I work with individuals experiencing depression, anxiety, trauma, ADHD, bipolar disorder, schizophrenia, OCD, and other mood and thought-related conditions. During the initial session, we focus on understanding your concerns, reviewing your history, and identifying practical steps toward improvement. Care may include psychiatric evaluation, medication management when appropriate, brief psychotherapy, education, and ongoing support.

I believe mental health care should feel supportive, clear, and collaborative—not rushed or overwhelming.

You do not have to face these challenges alone. My role is to help you reduce symptoms, strengthen coping skills, and regain balance so you can function at your best and move forward with confidence and stability.