Child & Adolescent Psychiatry

Desert Horizon Integrative Medicine (DHIM) includes Board Certified psychiatrists and certified advanced practitioners with more than 135 years combined experience treating patients of all ages. Our specially trained child and adolescent providers offer customized psychiatric outpatient services for children and adolescents ages 3-17 years old. 

In a warm and friendly environment, your child and family will be supported and treated with compassion through each step of the treatment journey.  We understand the critical role parents and community providers play in a child’s treatment and work in partnership to respond to your child’s needs and help your family achieve its quality of life goals.  

What We Treat*

  • Adjustment disorders
  • Anger and aggression
  • Anxiety disorders
  • Attention deficit hyperactivity disorder (ADHD)
  • Mood disorders and depression
  • Obsessive-compulsive disorders (OCD)
  • Oppositional-defiant disorder and disruptive behaviors
  • Personality disorders
  • Sleep disorders
  • Somatic symptom disorders
  • Suicidal thinking and self-harm behaviors
  • Tic disorders and Tourette syndrome
  • Trauma and stress

* DHIM does not provide comprehensive, “wrap-around” services for patients with disabilities related to severe mental illness, substance use disorders or eating disorders nor do we provide disability or forensic assessments.

Treatments include:

  • Coordination of care with counselors, clinical social workers, and/or community providers
  • Diagnostic psychiatric evaluations
  • Medication management
  • Parent guidance
  • Patient education
  • Recommendations for self-care and wellness activities
  • Supportive counseling

What you can expect

Your child’s first session with a DHIM provider is generally attended by the patient and his/her parents or caregivers; this participation is a critical first step in the treatment process.  For two-parent families, both parents are highly encouraged to attend, and treatment consent is needed from each parent.

DHIM providers work together with the child and parents/caregivers to discuss concerns and goals, and develop a diagnosis and treatment plan that is manageable for all involved. Treatment plans may include recommendations for psychotherapy, medication, and, if necessary, hospitalization or a referral for additional care.

After the first appointment, we may request permission to contact your child’s therapist, school, or primary care provider (PCP).

DHIM does not provide comprehensive, “wrap-around” services for patients with disabilities related to severe mental illness, substance use disorders or eating disorders nor do we provide disability or forensic assessments.

Preparing for Your First Appointment

Most commercial insurance plans as well as Medicare and Medicaid/AHCCCS are accepted by DHIM.  Please call us to verify that your insurance is accepted.

Please arrive to your first appointment at least 15 minutes early and bring the following items:

Hablamos Espanol. For Spanish-only speaking patients, the client’s right statement and treatment consent and registration forms are available in Spanish. DHIM also includes providers fluent in Spanish. Interpreter services are also available.

Department Providers

Barry Irons MD
Medical Director

Barry Irons, MD is the medical director at Desert Horizon.  He completed medical school at the University of South Dakota Sanford School of Medicine and his residency at the University of New Mexico. He is Board Certified by the American Board of Psychiatry & Neurology, specializing in the treatment of children, adolescents and young adults. Dr. Irons has expertise in the assessment and management of mood and anxiety disorders, disruptive behaviors, and distress related to trauma, health problems, or developmental challenges.

He believes in the value of comprehensive evaluation and clinical formulation to inform and guide the use of evidence-based interventions, including early considerations for therapy and psychosocial interventions, with selective use of medications when indicated. Dr. Irons provides the patient and his/her family education to support informed decisions and patient-centered care, and encourages collaboration with schools, other healthcare providers, and community partners.

Shayne Tomisato, MD
Shayne Tomisato MD
Child & Adolescent Psychiatrist

Shayne Tomisato, MD is a Board Certified child and adolescent psychiatrist who received her psychiatry training at Duke University Medical Center and her child and adolescent psychiatry training at the University of North Carolina Hospitals. She has been practicing in the Valley since 1996 and has been recognized as a “Top Doc” by Phoenix Magazine in the category of Child and Adolescent Psychiatry.
In addition to her work at Desert Horizon, Dr. Tomisato is also the program director for the Child and Adolescent Psychiatry Residency Training Program at MIHS and the Child Psychiatry section director for District Medical Group (DMG).

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