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

Department Providers

Barry Irons MD
Barry Irons MD
Desert Horizon Medical Director
Department: Psychiatry
Location(s): Desert Horizon Integrative Medicine
Shayne Tomisato
Shayne Mary Tomisato, MD
Child Psychiatry Director
Department: Psychiatry
Specialty: Psychiatrist, Residency Program, Desert Horizon Integrative Medicine
Location(s): Desert Horizon Integrative Medicine, Desert Vista Behavioral Health Center

Department Chair

Carol Kline Olson MD, DFAPA
Chair, Psychiatry Department
Department: Psychiatry
Specialty: Psychiatrist
Location(s): Psychiatric Services at Maricopa Medical Center, Desert Vista Behavioral Health Center

Department Administrator

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