Obsessive-compulsive disorder therapists & psychiatrists in Tempe, AZ

I am a board-certified Psychiatric Mental Health Nurse Practitioner at Heartland Mental Health Services, holding a Master of Science in Nursing from Walden University (2024). With over 15 years of registered nursing experience in Arizona — spanning inpatient and outpatient psychiatry, community mental health, crisis stabilization, substance-use treatment, and long-term care — I bring a compassionate, client-centered approach to every encounter. I specialize in the treatment of depression, anxiety, bipolar disorder, trauma, psychosis, substance use disorders, and chronic mental illness, providing comprehensive psychiatric assessments and medication management grounded in individualized, evidence-based, collaborative care. I am committed to fostering a supportive, stigma-free environment that empowers clients to take an active role in their healing and long-term wellness.

Hello. My name is Mary ‘Sarah’ Houston. I have been a Mental Health nurse for 20 years. I have been a Psychiatric Mental Health Nurse Practitioner (PMHNP) since November, 2016. As a PMHNP, I have worked inpatient and outpatient psychiatry, along with working at a crisis stabilization unit for mental health crises. As well, I have training in mental health Telehealth. I have worked with clients with depression, anxiety, insomnia, schizophrenia, bi-polar disorder, substance use disorder, and PTSD.

I have a passion to help those with emotional and mental health needs.

I am a licensed clinical social worker licensed in Illinois and Alabama with over 17 years of experience working as a social worker/therapist. I have worked with clients with a wide range of concerns including depression, anxiety, relationship issues, parenting problems, addiction, co-dependency, interventions and family dynamic issues. I also have experience working with individuals going through various medical diagnosis as well their caregivers from diagnosis to end of life and grief and loss therapy. I have worked with children, adolescents and adults. My therapy style is warm and interactive. Specialize in trauma work as well.

DBT therapy as well as CBT therapy, family therapy, children and adolescents. I work with individuals that are struggling with trauma, anxiety, depression, ADHD, Autism as well as family and relationship issues.

I am an RN with over 18 years of experience in nursing, specializing in mental health care. I am also a PMHNP-BC, and I obtained my first degree from Grand Canyon University and my Masters from Walden University. I manage clients across the lifespan and use a holistic and patient-centered approach.

I am a board-certified Psychiatric Mental Health Nurse Practitioner specializing in care across the lifespan treating clients with ADHD, anxiety, bipolar disorder, depression, OCD, PTSD and sleep disorders. I am committed to delivering high-quality, compassionate care tailored to each patient’s unique needs. I am a proud veteran.