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Meet Our Therapists

Stephanie Knueppel, LPC, Owner

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Stephanie is the Owner of Stateline Mental Health Services and works as a full-time therapist.  Stephanie received her B.A. in Psychology and Sociology from Transylvania University. She later attended the University of Kentucky where she received her M.S. in Counseling Psychology. Stephanie is originally from Kentucky, but has been in Wisconsin since 2003. She has been a resident of Beloit since 2010. Stephanie has held numerous positions in the counseling field throughout Kentucky and Wisconsin. Stephanie has been trained in eye movement desensitization and reprocessing, Christian counseling, behavior modification, and brief solution focused therapy. She sees individuals of all ages, couples, and families. She specializes in ADD/ADHD, anxiety and panic disorders, autism spectrum disorders, depression, blended family issues, trauma, and women's issues.  In addition to her therapy services, Stephanie oversees the entire clinic and manages the business.

Kelley Everson, LPC, Project Manager

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​Kelley joined the Stateline Mental Health Services team in August 2015. Originally, Kelley started as a part-time therapist and is now one of our full-time therapist.  She received her B.S. in Sociology from Northern Illinois University. She then attended the University of Wisconsin-Whitewater where she received her M.S. in Counselor Education and later added an emphasis in School Counseling. Kelley has several years of experience working as a full-time school counselor.  She has also worked as an adjunct professor in a counselor education program. 
Kelley specializes in abuse and trauma, ADHD, adjustment disorders, anger management, anxiety and panic disorders, mood disorders, OCD, and PTSD. She has also been trained in eye movement desensitization and reprocessing, crisis intervention, and grief/loss counseling.  Not only does Kelley serve clients in a therapeutic setting, she takes on administrative tasks related to our School Based Mental Health programs, and provides trainings to organizations about mental health, trauma, and stress management.  

Faith Mattison, LCSW, Clinical Supervisor

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Faith joined the team in September 2018 as a full-time therapist. She graduated with both her B.S and M.S.W. in University of Wisconsin Madison. She is a Licensed Clinical Social Worker. Faith has worked in the area for the last 20 years including Juvenile Probation, In Home Family Treatment for the County and as a school social worker for about 10 years in Beloit.  Faith has experience working with children as young as 4 all the way to young adults. Faith specializes in anger management, anxiety, ADHD, autism, child welfare, fetal alcohol syndrome, LGBTQ+ issues, grief, intellectual and developmental disabilities, learning disabilities​mood disorders, PTSD,  and trauma. She focuses mainly on behavior modification, positive behavioral interventions and support, parental support and training, and health and behavior assessment and intervention services. Faith currently works in the Turner School District through SMHS. Faith is the Clinical Supervisor at SMHS, overseeing all clinicians and social workers in training.

​​Samantha Ball, LCSW, Office Supervisor

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​Samantha joined Stateline Mental Health Services in January 2018 as a full-time therapist.  She is a Licensed Clinical Social Worker.  Samantha received her B.A. from University of Wisconsin-Whitewater in Social Work and her M.S.W from George Williams College of Aurora.  She has experience working with children, adolescents, and their families. Samantha specializes in abuse and trauma, anger management, anxiety disorders, ADHD, child welfare, mood disorders, developmental disabilities, domestic violence, OCD, parental support training, personality disorders, and PTSD. She has also been trained in eye movement desensitization and reprocessing. Samantha currently provides school based mental health services in the Clinton Community School District.  In addition to serving clients, Samantha oversees the front desk operations.

Jenniffer Beu, LPC

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​Jenniffer joined the SMHS team in June of 2017 as a full time therapist where she began working towards her LPC. She graduated with a B.A. in Theology and a M.S. in Counseling from Concordia University Wisconsin.  Jenniffer is now a Licensed Professional Counselor.  Her experience as a parent, co-parent, wife, sister and daughter offer insight to all the roles we play and the struggles we face on a daily basis.  Jenniffer has experience working with anger management, personality disorders, anxiety, depression, and PTSD. In addition, her education and experience with AODA issues has given her a passion to meet people where they are and help figure out where to go from there. She looks forward to working with adolescents, individuals, couples and groups on the journey to better mental health. Jenniffer has also been trained in eye movement desensitization and reprocessing.

​​Taylor Leibfried, LCSW

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Taylor joined Stateline Mental Health Services in January 2019 as a full time therapist. She graduated with her Bachelors of Science in Psychology and Interpersonal Communications from University of Wisconsin Lacrosse. Taylor went on to continue her education where she received her Masters Degree in Social Work from University of Wisconsin Milwaukee. Prior to working at Stateline, Taylor briefly worked as mental health care coordinator at Beloit Memorial Hospital. She is passionate about working with kids from ages 5 to young adults and specializes in anxiety, anger management, impulse control, behavior modification, ADHD, mood disorders, and trauma.  Taylor also has training in brainspotting. Currently, Taylor is also working at the Edgerton School District as a school based mental health therapist.

Amberly Mixon, LCSW

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​Amberly joined the Stateline Mental Health Services team in August of 2019 as a full time therapist.  She received her B.A. from University of Wisconsin-Whitewater in Social Work and Psychology.  Amberly continued her education and received her M.S.W. from University of Wisconsin-Milwaukee.  Previously, Amberly worked for Rogers Behavioral Health for 5 ½ years. She has experience working with children, adolescents and their families.  Amberly specializes in eating disorders, trauma, OCD, anxiety, and depression.  She has been trained in CBT, including exposure and response prevention therapy (ERP), behavioral activation, and prolonged exposure, as well as DBT.  Amberly completed the youth-orientated substance abuse and trauma counseling program at UW-Milwaukee and is SBIRT certified.  Amberly currently works as a school based mental health therapist in the Evansville Community School District.

Sarah Petersen, APSW

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​Sarah joined the Stateline Mental Health Services team in September of 2019 as a full time therapist.  She received her B.S. from University of Wisconsin-Whitewater in Social Work.  Sarah continued her education and received her M.S.W. from University of Wisconsin-Whitewater.  Previously, Sarah worked in an intensive outpatient program for children and adolescents. She has case management experience while working with children, adolescents and their social systems.  Sarah has completed DBT training.  In addition to DBT, Sarah has experience working with ADHD, anxiety, depression, mood disorders, personality disorders, eating disorders, and trauma. Currently, Sarah works as a school based mental health therapist in the Brodhead and Parkview school districts. ​

Nicolette Miller, APSW

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Nikki joined the Stateline Mental Health Services team in June of 2020 as a full-time therapist working towards her LCSW. She received her B.A. from the University of Wisconsin-La Crosse in Psychology and continued her education and received her M.S.W from the University of Wisconsin-Whitewater. Nikki has experience working with children and adolescents in outpatient, school, community, and home-based settings. She has experience with anxiety disorders, depressive disorders, personality disorders, ADHD, trauma, Autism Spectrum Disorder, behavior modification, and case management. Currently, Nikki is a school based mental health therapist in the Beloit Turner School District. 


Stephanie Sisson, LCSW

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​Stephanie joined Stateline Mental Health Services in June of 2020.  Stephanie is a licensed clinical social worker. In 2012, she received her Masters Degree in social work at the University of Utah. She has worked in a variety of helping professions for the past 15 years and has spent the past 8 years working in home health, hospice and palliative care as a medical Social Worker.  She has practiced social work in Utah, New Mexico and Wisconsin and loves experiencing variations in culture and terrain.  Stephanie specializes in treating depression and anxiety in older adults and those who suffer with chronic conditions. Stephanie also has experience with grief and loss as well as trauma and PTSD. She has worked with children in after school programs as well as at risk youth in residential treatment centers. She has supervised several graduate and undergraduate Social Work students and has really enjoyed teaching what she has learned as a mental health practitioner. 
​Stephanie moved with her husband, daughter and two dogs
 to Beloit in 2018 and is extremely excited to provide mental health services to those in her community. She loves to travel, doing arts and crafts, and spending time with her family.

Amanda Isunza, LCSW

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Amanda joined Stateline Mental Health Services in June of 2020. She is a licensed clinical social worker; she received her MSW degree from George Williams College. Amanda has worked in a variety of helping professions over the past 9 years. She started her career working as a sexual assault and domestic violence advocate for a non-profit program. Her role as a bilingual advocate was significant to serve the Latino Community in Rock County. This is where she cultivated her passion for advocacy and social justice.
Amanda specializes in the treatment of depression, grief and loss; stress management, anxiety, LGBTQ issues and the emotional distress caused by life’s transitions. She enjoys working with children, teens, adults, families and couples. Being bilingual and culturally sensitive, she is also aware of the personal, relational, and spiritual needs of the individual.
Her goal in counseling is to provide professional, compassionate services to clients, by using a non-judgmental approach. She believes that the foundation of effective counseling is a good collaborative approach that requires honest caring without judgment. Rather than adopting one methodology for all individuals and issues, she draw from a variety of methods to create a tailored approach for each individual and situation.

Brielle Powers, LCSW

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​Brielle joined Stateline Mental Health Services in August 2020 as a full-time therapist. Brielle received her Master’s degree in Social Work from George Williams College of Aurora University, her clinical experience includes working with children, adolescents, and adults in the outpatient setting. Brielle practices from a holistic point of view looking at each individual’s specialized needs and goals for counseling. She is a Brainspotting practitioner trained in phases 1 and 2. Brielle specializes in working with individuals with anxiety, depression, PTSD, LGBTQ+, personality disorders, mood disorders, and ADHD.  In addition, Brielle works with those who have cooccurring substance use disorders. Brielle currently provides school based mental health services within the Milton School District. 

David Fischer, LCSW

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David joined Stateline Mental Health Services in September of 2020 as a full-time therapist.  David received his Master's Degree from Aurora University at George Williams College. David is a Licensed Clinician Social Worker since 2014 and has a specialty in Substance Abuse since 2015.  David has work experience with substance abuse programs including intensive outpatient program, residential, and community support programs.  David has experience working with diverse populations ages 16 and older treating depression, anxiety, PTSD, ADHD, grief and loss, personality disorders, and substance abuse.  David uses interventions such as CBT, DBT, motivational interviewing, Illness Recovery Management, and Substance Abuse Relapse Prevention.


Heidi Schildt, LPC

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Heidi joined Stateline Mental Health Services in August 2016 as a part-time therapist. She received her B.S. in Psychology from the University of Wisconsin-Madison and her M.S. in Counselor Education with an emphasis in School Counseling from the University of Wisconsin-Oshkosh.  Heidi works full-time as a School Counselor with over 25 years of experience, and she is also an adjunct professor in the Counselor Education Department for Concordia University Wisconsin where she teaches master-level counseling education courses.  Heidi has been trained in behavior modification, cognitive behavioral therapy, behavior and health assessment and intervention services, and couples and family therapy.  She specializes in abuse and trauma, anger management, anxiety, ADHD, child welfare, learning disabilities, mood disorders, and personality disorders.

Garth Fisher, LCSW

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G
​arth has been with Stateline Mental Health since January 2017 as a part time therapist. He has a M.S.W from Indiana University and has spent his career studying the process of human change. He has studied Biofeedback, Meditation, Wilderness Therapy, Sound Therapy, Massage Therapy, Martial Arts, and Relationship Therapy. He practices a client centered form of therapy that seeks to define the presenting problem clearly and facilitate the client's inner strengths and skills to find a solution. He takes into consideration physical problems, life style issues regarding health, and environmental issues that may be impacting the presenting problem. Garth specializes in abuse, anger management, ADHD, mood disorders, dissociative disorders, grief, hypnosis, military treatment, OCD, pain management, and phobias. He works with adults and couples using an eclectic approach based on his years of experience. 

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What Our Clients Are Saying
                                     based on our self-reporting survey

"All of the staff are amazing and friendly!"

"My therapist has made such a huge impact in my life and has helped shaped me into the person I am today."

​"I am thankful that Stateline Mental Health Services was there when I needed some help in finding new ways of thinking about my life."

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  • Home
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