

I am committed and dedicated to serving my patients and community. I am an advocate for mental health, and I integrate innovative treatments in my practice.
Ms. Tyisha Davis is a dedicated and compassionate nurse practitioner. Based in Friendswood, TX, she is currently associated with Texas Behavioral Health. As an experienced professional, she is well-equipped to treat a wide range of conditions. As a part of her academic training, Ms. Davis attended Walden University, where she earned her master's degree in psychiatric mental health counseling. She augments this training with her day-to-day experience. Ms. Davis gives each patient her focused attention and prides herself on delivering the best treatment available. She is sensitive to the uniqueness of each patient's situation and adapts her consultations and treatment options appropriately to accommodate individual needs and concerns.
I have always been passionate about working with children and their families. I obtained my undergraduate degree in Child Development and Family Studies where I had the opportunity to study typical child development throughout the various stages.
This foundation allowed me to have a unique perspective as I continued my studies in medical school, psychiatry residency, and finally my Child and Adolescent Psychiatry Fellowship, where I served as chief fellow.
It would be an honor to assist you and your family through whatever mental health challenges you all are facing.
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.
My practice encompasses a comprehensive range of therapeutic modalities, including talk therapy, medication management, and ketamine-assisted psychotherapy. Each of these approaches is tailored to address your unique needs and facilitate meaningful progress in your mental well-being.
I’m a psychiatric nurse practitioner who focuses on providing personalized and evidence-based mental health care. My training and experience include working with anxiety, depression, ADHD, prenatal/postpartum mental health, and cancer-related anxiety and depression. I believe in a warm, collaborative approach that helps clients feel seen and supported. My goal is to help you build confidence, clarity, and long-term stability.
My clinical style is warm, structured, and collaborative. I emphasize clear communication and shared decision-making with my patients. I strive to create a safe and non-judgmental environment where people feel heard and respected.
I have an AGACNP background, which supports my ability to assess medical comorbidity and understand complex medical/psychiatric overlap. I am also DOT-certified, which reflects my knowledge of safety-sensitive considerations and careful medication risk assessment.


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