

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 dedicated and compassionate Board-Certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with extensive clinical experience across various psychiatric settings, including inpatient, outpatient and community mental health. Leveraging a solid background in acute care nursing, i excel in conducting thorough assessments and developing patient-centered treatment plans tailored to each individual
Possessing dual certification as a Psychiatric Mental Health Nurse Practitioner ( PMHNP-BC) and Family Nurse practitioner (FNP-C ), Marionne is dedicated and compassionate with her mission being to bridge the gap in mental health care access through psychiatric/behavioral telehealth services, making mental health accessible to everyone, regardless of their background. Marionne has been in healthcare for over 15 years.
I promote the healthy development of children, adolescents, adults and families.
Peter Oni is a dual board-certified Psychiatric Mental Health Nurse Practitioner and Family Nurse Practitioner with over 10 years of advanced practice. I believe in patient-centered, shared decision, and holistic approach to help individuals and families navigate a wide range of Psychiatric health conditions like depression, anxiety, ADHD, and Schizophrenia, Post-traumatic stress disorder, personality disorder, and bipolar disorder.
I believe mental health care works best when it feels like a partnership. I take time to listen, understand your experiences, and involve you in every step of your treatment plan. My goal is to create a space where you feel respected, heard, and supported while we work together to find the right tools and strategies to help you feel more stable, confident, and hopeful about the future.


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