

Ms. Bouler is a board-certified psychiatric nurse practitioner at MODERN PSYCHIATRY CENTER. She has over fifteen years of experience in mental health care, including more than a decade specializing in the treatment of ADHD. She earned her master’s degree (NP) from Columbia University and completed additional post-graduate training at New York-Presbyterian/Weill Cornell Medical Center.
Catherine Williams, PMHNP-BC. Psychiatric Nurse Practitioner (Texas telehealth). As a Psychiatric Mental Health Nurse Practitioner (PMHNP-BC), I am committed to providing compassionate, evidence-based mental health care that supports each individual’s journey toward stability, healing, and lasting wellness. I integrate both medical and therapeutic perspectives to address the whole person—mind, body, and spirit—with clinical expertise and genuine empathy.
I strive to create a safe, respectful, and judgment-free environment where clients feel heard, understood, and supported. Whether you are navigating anxiety, depression, trauma, mood disorders, or major life transitions, I work collaboratively with you to develop an individualized treatment plan that empowers growth and promotes meaningful, sustained emotional well-being.
I am a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) with a DNP (Doctor of Nursing Practice) degree from the University of Massachusetts Global. I have experience working with adolescents and adults in multiple settings facing various complex mental health issues, including OCD, depression, anxiety, ADHD and mood disorders.
I am a Dual-Certified Family-Psychiatric Mental Health Nurse Practitioner and addiction specialist. With over 26 years of combined healthcare experience and leadership. My goals are to provide a more holistic, patient-centered experience through education, and the integration of primary care, mental health, and addiction services. Ultimately, managing the health of others is my ministry. As your accountability partner, I will walk with you through your adversities and triumphs. Today's your day!
Hi, I’m Ngozi Kalu, PMHNP-BC, AGNP-C, a board-certified psychiatric nurse practitioner serving clients across Texas. I provide compassionate, evidence-based mental health care for adults and teens, helping them regain balance and confidence in their daily lives.
I specialize in treating anxiety, depression, ADHD, trauma, and sleep disorders, and other mental health disorders. I also work closely with patients and their families to create treatment plans that fit their unique goals. My approach combines thorough psychiatric evaluations, medication management, and supportive counseling to help you feel better, think clearly, and live with purpose.
Many of my patients come to me when life feels overwhelming, relationships are strained, or focus and motivation seem out of reach. Together, we identify what’s getting in the way and build a clear, personalized path forward.
I believe healing happens when care is collaborative, respectful, and accessible. That’s why I offer flexible scheduling and accept insurance through Headway so you can get started without delay.
If you’re ready to take the next step, I’d be honored to partner with you in your journey toward wellness.


Headway makes it easy to find support for your mental health — from finding the right provider, to understanding costs, to scheduling with ease.
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