Kathryn Montierth

Hi, I’m Kathryn, a board-certified psychiatric-mental health nurse practitioner providing virtual psychiatric evaluations and medication management across Arizona for adolescents ages 13–17, adults, and older adults. I work particularly with ADHD, anxiety, depression, medication concerns, and diagnostic clarification, along with OCD, sleep concerns, trauma-related symptoms, PTSD, panic symptoms, and mood disorders. Yarrow Behavioral Health is a solo practice, so you’ll work directly with me at every visit. I became a psychiatric-mental health nurse practitioner in 2026, following more than 14 years as a registered nurse. My experience includes inpatient psychiatry, psychiatric crisis care, medical-surgical nursing, and neurology. I offer telehealth appointments throughout Arizona on Tuesdays, Saturdays, and Sundays, from 5:00 AM to 7:00 PM Arizona time, with early-morning, evening, and weekend availability.

My approach is warm, practical, thorough, and collaborative. Before recommending medication, I consider the full picture: symptoms, medical and psychiatric history, sleep, stress, daily functioning, past treatment, and your goals. I explain the options, expected benefits, potential risks, and alternatives, then work with you to develop an individualized, evidence-based plan. My role focuses on psychiatric evaluation and medication management, rather than ongoing psychotherapy. With your written permission, I can coordinate with therapists, primary care clinicians, and other members of your treatment team. For adolescents, I involve parents or guardians as appropriate while ensuring the young person is heard and included in decisions.

Your first appointment will last about 60 minutes and take place by secure video. We’ll discuss your current concerns, daily functioning, medical and psychiatric history, medications, previous treatment, safety, and goals. When clinically useful, we may also review outside records or gather information from a parent or guardian, therapist, school, primary care clinician, or another member of your treatment team. You’ll leave with a clear understanding of my assessment and the next steps. The plan may involve starting, continuing, or adjusting medication; gathering additional information or testing; coordinating care; or recommending a different level or type of treatment if that would be safer or more effective.