Desert Horizon Integrative Medicine
840 E. McKellips Road, Suite 110
Mesa, AZ 85203
Phone: (602) 470-5520
Fax: (480) 649-0783

Psychiatry, Family Medicine
Monday – Thursday  7:00am – 6:00pm
Friday 7:00am – 5:00pm 
Services Provided: 
Desert Horizon provides a wide range of services for infants, children, adolescents, adults, and their families.
We specialize in the evaluation and treatment of those with emotional and behavioral challenges.
We serve the general mental health population from ages 1 month of age plus.Our practice provides psychiatric services for Adults, Children, and Adolescents that includes:
• Medication Management
• Individual Therapy
• Family and Group Therapy

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Department Providers

Barry Irons MD
Barry Irons MD
Desert Horizon Medical Director
Department: Psychiatry
Shayne Mary Tomisato MD
Child Psychiatry Director
Department: Psychiatry
Specialty: Psychiatrist, Residency Program, Desert Horizon Integrative Medicine
Education: Baylor College of Medicine, Houston, Texas
Board Certification: Psychiatry, American Board of Psychiatry and Neurology; Child and Adolescent Psychiatry, American Board of Psychiatry and Neurology

Department Chair

Carol Kline Olson MD, DFAPA
Chair, Psychiatry Department
Department: Psychiatry
Specialty: Psychiatrist
Education: Stanford University School of Medicine, Stanford, CA
Board Certification: Psychiatry and Forensic Psychiary, American Board of Psychiatry and Neurology

Department Administrator

Stephanie Conoley
Psychiatry Department Administrator
Family and Community Medicine Administrator
Department: Psychiatry