TreSina Steger, LPC

Rebecca Siwanowicz is a Licensed Clinical Social Worker who began her career in 2013, maintaining various positions in both inpatient and outpatient settings while treating substance use and mental health disorders. Rebecca graduated with her BSW from Florida Atlantic University in 2013 and graduated with her MSW in 2016. Rebecca is trained in Accelerated Resolution Therapy and is a Master's Level Certified Addiction Professional in the state of Florida.‍Rebecca's areas of expertise are trauma, anxiety and depressive disorders, issues related to codependency and low self-esteem, life transitions, self-care and emotion regulation. Rebecca takes an individualistic approach when treating clients, greatly valuing and promoting individuality and autonomy. Rebecca practices through the lens of Family Systems Theory and Attachment Theory, utilizing components of Existentialism, Strength Based Therapy, Dialectical Behavior Therapy, 12 Step Principles, and Client Centered Therapy. Rebecca takes a psychosocial approach toward treatment, providing her clients with unconditional positive regard, psychoeducation, and practical coping skills to support them in building a life of their choosing.

Brianna Quirk is a licensed mental health counselor in the state of New York. She attended SUNY Oneonta for her Bachelor’s degree in psychology, and went on to Adelphi University where she received her Master’s degree in Mental Health Counseling.

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Brianna has extensive experience working with children, adolescents, and adults with a variety of different struggles. Brianna is trained in cognitive behavioral therapy, and helps her clients to recognize and change harmful and unhelpful patterns of thought and behavior, implement coping skills, and set goals for the future, leading to a happier and healthier existence. She uses techniques from CBT, solution focused therapy, psychodynamic therapy, and more to tailor each client’s sessions to their individual needs.

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Brianna specializes in working with individuals from a variety of different backgrounds and mental health issues: such as anxiety, ADHD, stress, depression, trauma, school avoidance and grief/loss. She also has extensive experience working with members of
the LGBTQ+ community.

Kia Morgan, LCSW, earned social work degrees from the University of Georgia and the University of South Carolina and has over 15 years of experience in the mental health field across inpatient and outpatient settings. Kia utilizes evidence-based modalities including Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), and motivational interviewing to support patients in achieving meaningful and lasting change.

Kia values an in-depth exploration of each patient’s background and personal history to identify root concerns and establish specific, person-centered treatment goals. She fosters a warm, supportive, and nonjudgmental environment where patients feel heard, respected, and safe. Kia provides thoughtful feedback to help patients discover their own solutions and offers education about diagnoses to empower patients to better understand and manage daily symptoms.

Kia begins care with a comprehensive assessment that explores a patient’s history, current concerns, strengths, and goals. In collaboration with the patient, she develops an individualized treatment plan that aligns with the patient’s needs and priorities, adapting the approach as progress is made.

Meredith McMillan is a Licensed Mental Health Therapist with 9 years of experience working in mental health. She specializes in working with individuals who experienced trauma and toxic stress, as well as those with addiction issues, relationship challenges, and adjustment disorders. Ms. McMillan's therapy practice focuses on providing person-centered encouragement and support. She utilizes a trauma-focused cognitive behavioral approach to help you to develop your understanding of yourself and your challenges and enable you to utilize your strengths to facilitate your healing. She received a Master's Degree in Counseling Psychology from Palm Beach Atlantic University in Orlando, Florida, and established herself as a therapist working in community mental health in the Lakeland, Florida area. She spent several years working at Tri-County Human Services providing co-occurring outpatient substance abuse therapy. Later, she shifted to providing services to children through Tri-County's B-Net program and Children's Home Society. She went on to become the Clinical Supervisor at the Children's Home Society providing care to children and adolescents impacted by trauma and the child welfare system. Before joining Talkiatry, she also served as the clinical supervisor and therapist at The Mary Welsh Foundation, providing care to individuals of all ages and specializing in trauma and family issues. Ms. McMillan has worked with individuals dealing with a variety of mental health issues throughout her years of experience as a therapist. She has worked with people of all ages and has experience working with families and couples. She has had additional training to serve individuals dealing with addictions and with processing trauma. She has had extensive experience working with individuals dealing with mood disorders and anxiety, as well as relationship and parenting issues.

Rhea Kisling, LPC, LCMHC, LMHC, CPCS, brings more than 20 years of experience to her work as a therapist. She has served in inpatient, outpatient, emergency, hospital, and community mental health settings, as well as leadership roles such as managing the social services department at a crisis stabilization facility. Rhea earned her MS in Clinical/Counseling Psychology and Ed.S. in School Psychology from Valdosta State University, and a BA in Psychology and Sociology from Loyola University in New Orleans. Licensed in Georgia, North Carolina, Florida, and South Carolina, she is also trained in Trauma-Focused Cognitive Behavioral Therapy (TF-CBT).

Rhea understands that beginning counseling can feel intimidating and strives to create a safe, welcoming environment where therapy moves at the patient’s pace. She primarily uses Cognitive Behavioral Therapy while incorporating elements of Behavioral Therapy, Solution-Focused approaches, Strength-Based methods, Motivational Interviewing, and Dialectical Behavior Therapy. Drawing on her multicultural background, she respects and honors each individual’s unique experiences and cultures. She believes no concern is too large or too small to address in therapy and emphasizes collaboration at every stage.

Rhea views the first appointment as a chance to build trust, explore how she and the patient can work together, and establish goals for therapy. She provides a clear framework for what to expect, welcomes questions, and encourages open communication throughout the process. Understanding that sharing personal history can be difficult, she is committed to moving at a pace that feels comfortable and supportive for each patient.

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Jennifer Maguire is a Licensed Professional Counselor in New Jersey with over 25 years of experience supporting individuals through life’s most complex challenges. She holds degrees from Rutgers University, Rowan University, and the University of Phoenix.

Jennifer Maguire approach is warm, interactive, and client-centered, guided by empathy, respect, and collaboration. Jennifer draws from evidence-based practices such as CBT, DBT, Solution-Focused Therapy, and trauma-informed care. She works closely with each client to identify strengths, clarify goals, and create a personalized treatment plan that fosters healing and growth.

Jennifer Maguire supports clients in understanding how their thoughts, emotions, and behaviors connect, and teaches skills like mindfulness, distress tolerance, and emotional regulation. Jennifer believes therapy is a partnership where clients feel heard, empowered, and respected. Her goal is to help individuals move toward a life of greater peace, connection, and fulfillment.

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