Meet Our Team

Katy is a Licensed Mental Health Counselor and the owner of Andover Therapy Services. Since 2012, she has worked with adolescents and adults in the Boston area, providing compassionate, evidence-based care for a wide range of mental health conditions.

Katy has a particular passion for supporting individuals and families in the perinatal period. She offers specialized treatment for mood and anxiety disorders, as well as the emotional challenges that can arise from infertility, grief and loss, birth trauma, relationship strain, and parent-child attachment difficulties.

Her integrative approach draws from Ego-Parts Work, EMDR, CBT, ERP, mindfulness, positive psychology, and DBT. Katy helps clients identify and work through past relational wounds and internalized beliefs that continue to impact their present well-being. She completed advanced EMDR training (Parts 1 & 2) with a focus on the perinatal population through The Institute for Creative Mindfulness.

Above all, Katy is dedicated to validating her clients' experiences and creating a safe, supportive space for growth. Together, we will manage your scary thoughts, regulate your emotions, and use your strengths to build confidence and help you feel like yourself again.

Devonta is a Licensed Independent Clinical Social Worker with nearly two decades of experience supporting children, adults, and families through mental health and medical challenges. He brings a strengths-based and solution-focused approach to his work, grounded in compassion, cultural humility, and advocacy. His practice emphasizes meeting clients where they are, empowering them to recognize resilience, and guiding them toward meaningful change.

Devonta has broad experience in community mental health, hospital, and residential settings. He is skilled at navigating family systems and helping clients feel safe and understood, using client-centered and trauma-informed practices to help individuals process difficult experiences while drawing on their strengths.

Most recently, Devonta has developed a special interest in perinatal mental health, with a focus on supporting fathers. He is passionate about addressing the unique and often overlooked needs of men as they transition into parenthood, including grief, identity shifts, relationship challenges, and the impact of pregnancy-related complications. His goal is to create supportive spaces where fathers can process emotions, strengthen their identity, and deepen family connections.

Diane is a masters-level, pre-licensed therapist in Massachusetts with extensive clinical experience supporting adolescents, families, older adults, and individuals facing complex mental health challenges. She is particularly skilled in helping clients explore how past adversities shape present-day emotional experiences and in guiding them toward healing and resilience.

Her work includes supporting adults living with anxiety, depression, and those navigating major life transitions. Diane also has a deep passion for working with individuals and families in the perinatal phase - supporting those experiencing reproductive challenges, postpartum adjustments, and the emotional complexities of parenting.

Diane integrates evidence-based practices such as cognitive behavioral therapy (CBT) and mindfulness techniques into her approach. She takes great care in creating a warm, safe, and supportive therapeutic environment where clients set the pace of their healing journey. Diane views her role as both a compassionate listener and a steady guide, always centering clients' voices and experiences.

She believes that everyone deserves access to mental freedom, inner peace, and authentic happiness. Diane is also fluent in both English and Haitian Creole, which allows her to connect with and support a wide range of clients and communities.

Hayley holds a Master of Science in Counseling Psychology from Merrimack College and has completed her clinical training as a graduate-level counseling intern. She brings a grounded, compassionate presence to her work and is dedicated to supporting individuals through life’s most tender and transitional moments. Before beginning her training as a therapist, Hayley worked in case management at Lawrence District Court, helping adults access substance use treatment and navigate community-based services. This work deepened her understanding of systemic barriers, the complexity of recovery, and the lasting impact of trauma on individuals and families.

As a mother of two young daughters, Hayley has a special interest in perinatal mental health. She believes the transition to parenthood can stir early attachment wounds and unresolved trauma, and she is committed to creating a safe, attuned space for clients to explore and heal.

Her clinical approach is person-centered and strengths-based, drawing from Cognitive Behavioral Therapy (CBT), Acceptance and Commitment Therapy (ACT), ego/parts work, polyvagal-informed therapy, and developmental psychology. Hayley welcomes clients from all backgrounds and identities, approaching each with warmth, curiosity, and respect.

Avery Hennigar, Ph.D., is a clinical intern at Andover Therapy Services. Avery holds a doctorate in human development and quantitative methodology and is currently completing her degree in Clinical Mental Health Counseling at Merrimack College. Avery has a deep interest in working with clients in the perinatal phase and supporting clients through the transition to parenthood. She has extensive experience in research and program evaluation focused on parental mental health and family well-being. Her research background highlights the importance of caregiver mental health, emotional attunement, and family relationships in supporting children’s social and emotional development. Avery's clinical work is grounded in a client-driven and trauma-informed approach, prioritizing collaboration and respect for each individual's lived experience. Avery brings strong skills in assessment, data-informed intervention planning, and the application of evidence-based practices to support stress reduction, parenting, and parental mental health. She is committed to meeting clients where they are and tailoring care to support resilience, empowerment, and meaningful lasting change.

Mary is a graduate intern at Andover Therapy Services, completing her Master of Science in Mental Health Counseling degree through UMass Boston.

Each step of Mary’s path to a counseling career has been intentional and with great reflection. After over a decade in higher education and marketing, Mary found herself energized by the relational aspects of work — understanding what others truly need, translating complex or even intimidating concepts into more digestible and actionable steps, mentoring others in navigating challenges, and creating authentic spaces where people felt heard, validated, and uplifted.

This foundation translates directly into Mary’s presence and approach in building relationships with her clients where they can grow, build confidence and resilience, and move forward in a way that feels authentically aligned with their goals.

Mary also has a deep passion for supporting women in the vulnerable perinatal period of their lives. It is a time ripe with rapid and monumental change in relationships, self-image, and understanding of one’s identity and place, and Mary is committed to supporting clients in processing these transitions through an empowered framework.