ATTENTION: The Nicholls Group will not be taking new patients after October 31st, 2026. Starting November 1st, 2026, new patient inquiries will not be accepted. If you have questions or concerns. Please contact us at tngadmin@thenichollsgroup.com or 480-998-2303. Thank you!
The Nicholls Group
Highly qualified clinical and neuropsychologists
480-998-2303
tngadmin@thenichollsgroup.com
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Qualified Psychologists
Our clinicians work with individuals across the entire lifespan, including infants, children, adolescents, and older adults.
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Diagnostic Services
Our clinical psychologists will listen to your presenting concerns and develop a plan of how to best evaluate, and either provide or recommend treatment for the concerns that are brought to our attention.
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Treatment Services
Our treatment approaches include cognitive-behavioral, client-centered, family systems, experiential, solution-focused, and play therapies.
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![Dr. Aimee Hammer]()
Dr. Aimee Hammer
Dr. Aimee Hammer is a licensed Clinical Child Psychologist experienced in neuropsychological evaluations of school aged children, adolescents, and young adults. Amongst other evaluations, Dr. Hammer is offering reading/dyslexia screenings. Please read here for more information.
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![Read Bio]()
Dr. Gregory Logid
Dr. Logid is a Clinical Psychologist experienced in evaluating, diagnosing and treating adolescents, adults and older adults
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![Dr. Stacey Halverson]()
Dr. Stacey Halverson
Dr. Stacey Halverson is a clinical psychologist with extensive training in pediatric psychology, specializing in anxiety, depression, and co-occurring medical conditions in pediatric patients, and eating disorders. Her expertise extends to adolescent and family counseling, helping individuals navigate complex challenges with care and compassion.
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Nina Galvan
Nina Galvan is a Clinical Psychology PhD student at Alliant International University in San Diego, California, where she also earned her Masters degree in Clinical Psychology in 2023. While completing her dissertation, she has joined the Nicholls Group team working as a psychometrist, office administrator, and executive functioning coach. Nina has extensive experience working with individuals across the lifespan, providing psychological evaluations, individual therapy, and group therapy.
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![Dr. Christopher Nicholls]()
Dr. Christopher Nicholls
Dr. Nicholls is a Clinical Psychologist with 40 years of experience working in a variety of medical centers and teaching hospitals. Dr. Nicholls is not seeing clinical patients, but is taking new forensic and legal cases.
Diagnostic & Therapeutic Services
The Nicholls Group consists of a team of Clinical Psychologists & licensed healthcare professionals who have diversified training backgrounds and offer a variety of psychological services, including psychoeducational and neuropsychological evaluations. Our clinicians work with individuals across the entire lifespan, including infants, adolescents, and older adults.