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Our Clinicians

Dr. Sheila Gissibl, Psy.D is Hope's Clinic Director and a Psychologist specializing in individual and couples therapy. With a wide variety of experience, and a graduate of Wisconsin School of Professional Psychology, she specializes in anxiety, addictions, depression and bipolar. In addition to being a prominent therapist, she also teaches at Mount Mary University. Dr. Gissibl is an interactive, solution-focused therapist. Her therapeutic approach is to provide support and practical feedback to help clients effectively address personal life challenges. She integrates complimentary methodologies and techniques to offer a highly personalized approach tailored to each client. With compassion and understanding, she works with each individual to help them build on their strengths and attain the personal growth they are committed to accomplishing.



Jessica Niedermayer, MS, NCC, LPC is Hope's Assistant Clinic Director and a psychotherapist where her practice is rooted in creating goals based on the strengths her clients already possess.  She believes in a no-nonsense approach to looking for positives, solutions and exceptions while encouraging clients to help meet their personal goals. Jessica's practice is composed of helping Adolescents, Young Adults and Adults with anxiety, depression, mood disorders, building coping skills, peer relationships, and self-esteem while empowering them to see the power they have in their own life.   In addition to individual therapy, Jessica leads groups for Dialectical Behavioral Therapy for skills training for adults and teaches at Carroll University.




Deb Sarnowski, MA, LPC, SAC-IT specializes in working with adolescents and adults, specializing in addictions, domestic abuse issues, trauma, relationship difficulties, co-dependency,  anxiety and depression. Deb has distinctive experience in helping her clients through life's transitions, personal trials and relational conflicts. Her compassionate and collaborate approach will assist and support you as you cultivate new skills and build hope for the future. 






Michael Gissibl, SAC-IT specializes in substance abuse treatment for adolescents, young adults and adults.  Michael has a passion for people and strongly believes that those who suffer from chemical dependency and abuse can work to meet their goals and live a life free from addiction. In addition, Michael is a Holistic Health Practitioner where he specializes in whole body health through effective detoxification and achieving proper nutrient levels.  Michael offers a variety of consultations that include detailed protocols to help optimize health.    





Lindsay Sherwood, LMFT, is a licensed marriage and family therapist who has a specialized background in marriage and family therapy and can help your family from a systemic approach by incorporating individual, couple, and family therapy interventions. In addition to conducting psychotherapy, she is passionate about working with children and their families affected by Autism Spectrum Disorder. Lindsay is one of the few clinicians that is able to administer standardized assessments for Autism Spectrum Disorder (ASD) on children ages 12 months and older. This includes assessments on children over the age of four-year-old, which is a service that most other ABA therapy clinics do not offer. 




Arianna Katrichis, MS, LPC-IT, SAC-IT, is a psychotherapist that encourages an active and collaborative role in therapy practice.  She focuses on an integrated and multicultural approach, using different techniques to accommodate to the needs of diverse populations.  Through cognitive behavioral therapy, dialectical behavioral therapy, mindfulness, and person-centered theories, Arianna helps to instill hope and empower clients to make strides towards their personal goals.  Arianna's practice focuses on work with older adolescents and adults who may be struggling with depression, anxiety, mood disorders, addiction, effective coping skills, and disordered eating.





Athena Kjell, MS, NCC, LPC, SAC - If you could shift just one thing in your life right now, just one... what would that be? Sometimes we get stuck in habits. Sometimes we believe the negative voice in our head. Fear and avoidance are blocks to living in line with your values. I'm here to come along side you to help you think in a different way so that you can be the best version of yourself. Whether you struggle with anxiety, depression, relationship issues, low self-esteem, addiction, trauma, guilt and shame, or lack of vision in life, change is possible. I approach therapy by taking your goals and challenging you to take action with manageable steps. I integrate various approaches, including Cognitive Behavioral Therapy, Behavioral Activation, Dialectical Behavioral Therapy, Mindfulness and Relaxation skills, Psychoeducation about shame shields and shame resilience, and Aroma Freedom Technique (optional).  "If you're comfortable, I'm not teaching and you're not learning. It's going to get uncomfortable in here and that's okay. It's normal and it's part of the process" (Daring Greatly, p. 199). You do not have to be alone in your journey towards healing from life's hurts, habits, and hang ups. Can I be a part of that process?




Hannah Tarnow, MFT-IT is a Marriage and Family Therapist who is passionate and dedicated to working collaboratively with clients to improve communication skills, to learn better coping skills, and to find strategies that reduce relational and emotional distress. She enjoys working with children, adolescents, adults, families, and couples. Hannah provides education and tools for change that are tailored uniquely to each client, while supporting and guiding them on a process of self-exploration. Hannah's approach is rooted in compassion, connection and acceptance of each client as an individual.Hannah completed her graduate degree and training, a Master's of Marriage and Family Therapy, through Capella University. She currently holds her associate license as a Marriage and Family Therapist (MFT), in the state of Wisconsin and is working towards full licensure. 




Niki M Drake, APSW, SAC-IT is a psychotherapist who incorporates a trauma-informed approach to her work with children, adults, and families utilizing a variety of treatment models, including; Eye Movement Desensitization and Reprocessing (EMDR) (https://www.emdria.org/page/what_is_emdr_therapy), Parent Child Interaction Therapy (PCIT), Acceptance and Commitment Therapy (ACT), and schema therapy. She also incorporates mindfulness and meditation in her work with clients. Niki strives to establish a trusting and non-judgmental relationship; working with clients to address addiction, post-trauma response, depression, anxiety, and relationship difficulties. She is also passionate about working alongside women who are currently navigating the challenging experience of custody and/or divorce.




Kendra Bittner MS, LPC-IT, earned her MS in Community Psychology from Alverno College and a BA from the University of Wisconsin-Parkside. She has experience with working with adults ages 18+ and integrates many approaches including mindfulness, Cognitive Behavioral Therapy, Dialectical Behavior Therapy, and Person-Centered Therapy. Kendra believes that every individual has the strength to get through life’s challenges and is passionate about helping others rediscover their strength within themselves. She works collaboratively with individuals to build their confidence and to work towards reaching their goals in life.





Kylie Slavek, MS, CRC, LPC-IT  Are you looking to embrace your authentic self? Find clarity? Or feel more inner peace? I can help. I provide a nonjudgmental, compassionate space for clients to feel freely, embrace their true selves, and gain insight to create lasting change. Whether you are experiencing anxiety, depression, relationship problems, low self-esteem or facing any other challenges I can help you obtain the mindset and skills to lead a happier, more fulfilling life. I believe it is the small habits that change lives and recognize that change can be uncomfortable. If you are willing to make a small change, I am willing to support you, guide you, and encourage you along the way. I utilize a person-centered approach where I attune to the individual needs of each client. I integrate Buddhist psychology and philosophy into my practice to promote harmonious living and the cessation of dissatisfaction and suffering. I am certified to practice Brainspotting and utilize a variety of therapeutic approaches including of mindfulness, cognitive behavioral therapy, solution focused therapy, positive psychology, and dialectical behavioral therapy.




 Meghan Mahorski, MS, LPC-IT, SAC-IT Are you struggling with finding the motivation to change undesirable behaviors? Have you found yourself escaping unwanted thoughts and feelings through use of substances? I can help you identify faulty thought patterns and assist with working through any emotional challenges and maladaptive behaviors you may be struggling with. I will meet you where you are at in life and work collaboratively with you to set obtainable goals while also providing you with a variety of tools to use while learning how to navigate your life. I approach every client non-judgmentally and as my genuine, authentic self. I firmly believe that building a solid, trusting therapeutic relationship is the mainstay of counseling. I utilize a cognitive-behavioral approach to therapy with a person-centered orientation to my clients. I also use motivational interviewing to help unveil untapped potential. I am eager to work with adolescents and adults who are struggling with mental health and/or substance abuse concerns of vast range.




Ash Rotonto, MS, ATR-P, LPC-IT, *Starting 8/3/2020* is an art therapist and licensed professional counselor in training. Ash earned her master's degree in art therapy, with an emphasis in counseling from Mount Mary University. She has clinical experience with trauma, anxiety, depression, sexuality, stress management/coping skills, and disordered eating. Her areas of special interest also include chronic dieting, body image work, and internalized weight stigma/fat phobia. She is passionate about the Health at Every Size Movement, and empowering people to mend their relationship with their body, food, and movement. She practices from a non-judgmental, feminist, and weight-inclusive framework while utilizing meditation/mindfulness, psycho-education, and DBT techniques, among others, to help support her clients on their journey to strengthen self-esteem and rediscover hope. She is also passionate about working with individuals on the LGBTQ+ spectrum, including those who are nonbianary, trans, and questioning.

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