Bipolar disorder therapists & psychiatrists in Keller, TX

Margarita Rice is a double-board-certified psychiatric-mental health and family nurse practitioner. Her education and clinical experience give her a well-rounded perspective on physical and mental well-being. She treats mental health, metabolic health (wellness, weight loss, prediabetes), and hormone health (BHRT for men and women.

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.

Life can get heavy—whether you’re juggling family dynamics, relationship stress, parenting challenges, or just trying to stay afloat. Maybe you’ve always been the dependable one, the person everyone else leans on, but you’re starting to realize it’s time to focus on yourself. You want less tension, more connection, and practical tools that actually make a difference. You’re not after a quick fix—you just want someone real to help you sort things out and walk with you through the hard parts.

McCartney is a Licensed Professional Counselor. He received his Bachelor’s degree in Psychology and a Minor in Bible from Harding University. From there he went on to receive his Master’s Degree from Texas Wesleyan in Professional Counseling. McCartney has experience with a wide range of ages from his time working as a children’s ministry intern, to working at a treatment center for teens and young men and running group counseling at an intensive outpatient program.

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.

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.

As a counselor, I feel like mental health is a journey that is easier with a guide. I believe in empowering my clients and giving them the information and confidence to choose the paths along their journey that are best for them. I have been fully licensed since 2018 and I enjoy working with adults and couples.

As a licensed professional counselor and psychotherapist, my relationship with my client is the most important aspect of the process. I strive for connection and a collaborative spirit. It is always my goal to help the client with their unique and special needs. Whether someone struggles with anxiety, depression, grief, stress, trauma, or general relational issues, I want to develop a plan with them that will be customized to their needs, and specific to what their desired outcome is.

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.