Functional Medicine in Portland, Oregon
Psychiatric Nurse Practitioner
Haley Horn, APRN PMHNP-BC, CFMP
She/Her
Haley Horn, PMHNP-BC, is a board-certified Psychiatric Nurse Practitioner with advanced training in functional medicine, specializing in the intersection of mental health, nutrition, and hormonal balance.
She takes a whole-person approach to care, recognizing that mood, focus, energy, and resilience are deeply influenced by physiology, lifestyle, and environment.
Her clinical focus includes ADHD, anxiety, depression, burnout, and women’s mental health, with expertise in how factors such as blood sugar regulation, gut health, micronutrient status, thyroid function, and reproductive hormones affect cognitive and emotional well-being.
By integrating evidence-based psychiatry with functional and lifestyle medicine, she helps patients move beyond symptom management toward sustainable, lasting health.
Haley combines thoughtful medication management when appropriate, with targeted nutrition strategies, lab-informed interventions, stress regulation, sleep optimization, and practical behavioral counseling.
Her care is personalized, collaborative, and grounded in the belief that patients feel and function best when mind and body are treated together.
She is passionate about empowering individuals with education and tools to better understand their bodies and to take an active role in their healing.