J. Mimi Castelo, PHD

Beverly Gilder, M.D.

Dr. Castelo is a clinical neuropsychologist with a PhD in Clinical Psychology as well as special expertise in the applied science of brain-behavior relationships. She has specialized training in both psychology and neuroscience in order to help people better understand their information processing style and their cognitive strengths and weaknesses. Dr. Castelo is trained to detect the presence of disorders that affect thinking, emotions, and behavior and can recommend appropriate treatments and supports, when relevant.

Neuropsychological evaluations are typically recommended by a physician, teacher, or therapist because of concern about learning difficulties or a problem in thinking, cognition, behavior, or mood that is interfering with daily life. Neuropsychological evaluations provide insight into cognitive strengths and weaknesses and offer an opportunity to learn about strategies and supports that may be helpful.




BA in Psychology, Boston University (2002)

PhD in Clinical Psychology, Boston University (2009)


Clinical Internship

Massachusetts General Hospital, Neuropsychology Track (2007-2008)


Post-doctoral Fellowship

Harvard Partners Neuropsychology Consortium (2008-2010)


Certifications and Positions

Licensed Psychologist in Massachusetts since 2009 (MA 9119)

Licensed Psychologist in Colorado since 2012 (CO 3756)

Board Certified in Clinical Neuropsychology since 2012 (ABPP 7267)

Staff Neuropsychologist at the Massachusetts General Hospital and Instructor in Psychology at Harvard Medical School (Boston MA, 2009-2012)

Clinical Member of the Colorado Neurological Institute (Denver CO, 2012-present)

Clinical Staff at the Swedish Medical Center (Denver CO, 2012-present)


Practice Philosophy

Dr. Castelo’s practice provides neuropsychological services to individuals across the lifespan (from age 6 and up) with a broad range of medical, neurological, neuropsychiatric, and developmental conditions.  She has experience working with patients with strokes, seizures, movement disorders, tic disorders, brain injuries, dementia, learning disorders, ADHD, and a wide range of other neuromedical issues. She strives to remain current on the most current scientific literature and then incorporates this research into her clinical work. She aims to practice within a multidisciplinary framework whenever possible, which includes involving families and other care providers (with the patient’s permission) in the assessment process to gain a mutual understanding of a person’s symptoms, strengths, weaknesses, and needs.  Families are encouraged to return with the patient for a follow-up session after an evaluation.  She strives to make the evaluation process and clinical report meaningful to the patient, their family (when appropriate), and treating medical team. This involves not only working towards a diagnosis, but also gaining a better sense of the meaning of the person’s symptoms in their everyday life and connecting people with effective resources.

Dr. Castelo understands that undergoing formal testing can be an intimidating and overwhelming process, for both kids and adults. She has extensive experience in working with a range of individuals, from those with very subtle deficits who may need to be challenged to elicit their mild difficulties, to others with more substantial weaknesses who require a more modified testing procedure. She aims to conduct a detailed and thorough exam, while ensuring that her clients feel comfortable and able to perform to their optimal ability. This includes an explanation at the beginning of the exam of the goals and details of the assessment and what to expect from the process. Frequent rest and food breaks are always an option, and sometimes testing is split across several test sessions. Her goal is to provide her clients with a comprehensive and compassionate evaluation which helps to elucidate their unique cognitive processing style and ultimately aid them in terms of daily functioning.