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Demi Kourtesi, Psychologist
Psychologist in Chandler, Arizona

Demi Kourtesi, Psychologist

Specialties:
Personality disorders Anger issues Anxiety Depression/feeling down Detachment/disconnection +15
Gender Identity: Female (She/Her)
Ages Served: 18-74
Appointments: In-office and Online
Manages Medications: No, provides testing & therapy only
Accepts Insurance: Yes - View accepted plans

Dr. Demi Kourtesi, is a clinical psychologist, who helps individuals in Arizona navigate life’s most complex emotional and psychological challenges with compassion, insight, and evidence-based strategies. Practicing at LifeStance Health, she provides therapy and psychological testing for teens, adults, and seniors, offering individualized care that promotes growth, healing, and resilience. Demi works closely with her clients to identify root causes of emotional distress and behavioral patterns, empowering them to develop practical tools for lasting well-being. Demi specializes in treating OCD and Personality Disorders, using a thoughtful, client-centered approach. 

The DSM-5 recognizes 10 distinct personality syndromes: Paranoid (distrust and suspicion of others), Schizoid (detachment from social relationships), Schizotypal (social discomfort and eccentric behavior), Antisocial (disregard for the rights of others), Borderline (instability in relationships and emotions), Histrionic (excessive emotionality and attention-seeking), Narcissistic (a grandiose sense of self-importance), Avoidant (social inhibition and hypersensitivity to criticism), Dependent (an excessive need to be cared for), and Obsessive-Compulsive personality disorder (a preoccupation with orderliness and control). If you’re interested in learning more about these personality syndromes, this short screener can provide some insights, but it is not a substitute for a professional evaluation: https://similarminds.com/personality_disorder_test.html

These conditions often affect every aspect of a person’s life, from daily functioning to relationships and self-esteem. Her clinical expertise includes the use of Psychodynamic Therapy, Exposure and Response/Ritual Prevention (EX/RP), and Cognitive Behavioral Therapy (CBT) to support individuals in overcoming interpersonal challenges, intrusive thoughts and compulsive behaviors, and mood instability. Demi is committed to helping clients understand how neurodevelopmental differences and trauma histories influence their behavior and emotional experiences. She uses targeted interventions and testing tools to assist in diagnosis and treatment planning, ensuring each client receives the support they need to thrive. Demi also has extensive experience with neuropsychological and personality testing which she incorporates into her work to support accurate diagnoses and guide tailored treatment approaches. Outside of her clinical work, Demi is an avid student of psychology, philosophy, and astronomy. She enjoys traveling, skateboarding, snowboarding, reading, cooking/baking, and spending time with others over board games and movies. Her diverse interests reflect her open-minded, curious, and creative spirit—qualities that inform her warm and collaborative therapeutic style.

Types of Care & Ages Served

Areas of Focus

Individual Therapy

Get help addressing challenges and improve well-being with a clinician's guidance.

  • Obsessive Compulsive Disorder
  • Patterns affecting behavior, emotions and relationships
  • Personality disorders
  • Anger issues
  • Anxiety
  • Depression/feeling down
  • Detachment/disconnection
  • Dissociative disorders
  • General relationship issues
  • Hair pulling & skin picking
  • Hoarding
  • Marital stress or divorce
  • Panic attacks
  • Phobias
  • Premarital counseling
  • Self-esteem
  • Sexual trauma
  • Stress management
  • Trauma & PTSD

Psychological & Neuropsychological Testing

Psychological testing and evaluations are used to collect insights into someone’s behavior and thoughts.

Languages

  • English
  • Greek

Education

  • University of Nevada Las Vegas
  • California State University, Los Angeles

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Frequently Asked Questions About Demi Kourtesi

Please call us at 480-716-0545 to schedule an appointment with Demi Kourtesi.

Demi Kourtesi, Psychologist in Chandler, Arizona

Demi Kourtesi

Psychologist in Chandler, Arizona

Already have an appointment?

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