

Finding the right mental health provider in Southlake is easier with Headway. Our network of 9,003 providers accepts Cigna insurance, offering flexible virtual and in-person sessions with copays between $0-$30, so you can prioritize your wellbeing.
As a board-certified, doctorally prepared psychiatric nurse practitioner, I treat a variety of mental health disorders using medication management as well as can incorporate psychotherapy within the session based on situational necessity. My focus is across the lifespan, including children and adolescents.
My therapeutic style remains flexible and collaborative, focusing on your individual strengths, needs, and motivation. I consider it a privilege to partner with my clients in this work and to be trusted by them as they share their stories. I strive to create a collaborative space for you to share and examine your own behaviors, feelings, and thoughts; for as Cheryl Richardson has noted, “People start to heal the moment the feel heard.”
I work with adults 18 and older who feel anxious, depressed, distracted, emotionally overwhelmed, burned out, or unlike themselves. They may be struggling with ADHD, mood changes, stress, sleep disruption, low motivation, or difficulty functioning in daily life. Many are looking for mental health care that feels thoughtful, thorough, and individualized.
I am Mary Nganga, a PMHNP-BC in state of Texas. I have more than 12 years of experience in mental health. I graduated with Bachelor in Nursing from University of Texas Arlington, and Masters in Nursing from Texas States University, San Marcos. My free time, I enjoy spending time my family, pet (Ruffy), and gardening.
Thank you for stopping by! I am excited to get to know you and begin this beautiful journey of growth. Whether you are starting a new journey or you’re looking to pick up where you left off, I’m glad you stopped by!
It is my passion to work with people, as they challenge themselves to grow and evolve. Many of us experience challenging feelings of depression, anxiety, relationship stress, and stress of dealing with the many transitions of life. At times, these challenging feelings can make us feel alone or isolated from our communities of love and support. I believe that I am here to walk alongside you and provide insight and support as you begin to see yourself grow and reach the goals that you set for yourself. I primarily work from a narrative perspective, but I pull from many different approaches to create a safe and efficient environment for my clients to explore and reflect on themselves and their situations.
I have a Ph.D in Counseling. I've been a therapist since 1984 and I listen very well. I help clients with anxiety, depression and relationship issues and more.



Headway makes it easy to get affordable in-network mental health care with Cigna — from finding the right therapist or psychiatrist, to understanding costs, to booking your first session.
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