Brain Insights

Neuropsychological assessment and psychological treatment center in Walnut Creek, CA.

We specialize in comprehensive psychoeducational and neuropsychological assessments for English and Spanish speakers.

Our evaluations clarify diagnoses and identify the appropriate treatment for a range of emotional, behavioral, and cognitive concerns for school-aged children, adolescents, adults, and older adults.

You will be matched with a licensed psychologist dedicated to providing personalized and compassionate care.

Our assessments are tailored to meet the unique needs and concerns of each individual, and we utilize the latest research and technology to provide the most accurate and reliable results.

Our assessment services include:

  • Neuropsychological Assessments

    Evaluate cognitive functioning and identify areas of strength and weakness.

  • Psychoeducational Assessments

    Evaluate academic achievement and identify learning difficulties.

  • Diagnostic Assessments

    Evaluate for psychiatric disorders such as ADHD, anxiety, depression, and autism spectrum disorder.

  • Personality Assessments

    Evaluate patterns of behavior and personality traits.

Diagnoses We Assess:

Seeking an assessment does not have to be overwhelming or stressful.

We are committed to providing a welcoming and collaborative environment where individuals feel understood, informed, and empowered throughout the entire evaluation process from start to finish.

What Makes Us Different?

  • Comprehensive testing – Holistic and thorough evaluation so you can be confident in the results and treatment plan.
  • Modern convenience – Online patient portal to streamline communication and payments and receive results sooner. 
  • Fast turnaround times – Find solutions, get recommendations, and connect with support quickly. 
  • Transparent pricing – Receive a good faith estimate for an evaluation without ever having to pick up a phone.

Providers:

Dr. Mickell Lethco

California Licensed Psychologist: PSY33936

Dr. Mickell Lethco fell in love with neuropsychology while obtaining her doctorate in Clinical Psychology at the Wright Institute in Berkeley, California. She utilizes her deep understanding of how brains work to inform her assessments, therapy, and community outreach. Dr. Lethco works closely with clients and their families to identify the true source of the problem and the solutions that work best based on the most up-to-date research and the unique circumstances and preferences of each client.

In addition to neuropsychology, she offers a unique background in music and art. She incorporates art and music into her psychotherapy sessions alongside evidence-based practices including Acceptance Commitment Therapy (ACT), Cognitive Behavioral Therapy (CBT), Dialectic Behavioral Therapy (DBT), Supportive Parenting for Anxious Childhood Emotions (SPACE), and Program for the Education and Enrichment of Relational Skills (PEERS).

Dr. Lethco has worked in a wide variety of settings, including schools, community mental health, private practice, and inpatient neurorehabilitation. She has completed assessments and provided therapy services across the lifespan for individuals with learning disabilities, ADHD, autism, anxiety, depression, bipolar disorder, PTSD, complex trauma, traumatic brain injury, stroke, dementia, expression and receptive language impairment, and spinal cord injury.

As a bilingual clinician, Dr. Lethco has worked with numerous monolingual Spanish-speaking immigrants, and she is passionate about providing culturally appropriate assessment and therapy to Latinx community members.

Dr. Gohar Jaffer

Licensed Psychologist: PSY35577

Dr. Gohar Jaffer is a licensed clinical psychologist who brings steadiness, curiosity, and compassion to her work with children, adolescents, adults, and families. Born and raised in the Bay Area, she understands the fast pace and pressures many families face—and creates space for reflection, skill-building, and healing.

Dr. Jaffer earned her undergraduate degree in Economics from UC Berkeley before transitioning to clinical psychology, completing her PsyD at CSPP-Alliant. Her clinical training includes work in primary care clinics, schools, private practice, and inpatient psychiatric settings, allowing her to meet clients where they are, whether they’re navigating everyday stressors or more acute emotional challenges.

A central focus of her work is supporting teens and young people navigating anxiety, depression, identity development, and family dynamics, though she also works with adults seeking support through life transitions, stress, or emotional difficulties. Her therapy style is practical, thoughtful, and strengths-based, integrating CBT, DBT, and SPACE (Supportive Parenting for Anxious Childhood Emotions). She works collaboratively with teens to help them feel understood and empowered, and partners with caregivers to support meaningful, lasting change at home.

At Brain Insights, Psychological Solutions, PC, Dr. Jaffer provides individual therapy, caregiver coaching, and group support. Her work is grounded in the belief that change is possible when we feel safe, supported, and genuinely seen.

She brings the same intentionality to her personal life—prioritizing time with family, finding calm through nature, and staying curious about the ways people grow and connect.

Education

Training

Recent Community Talks

Choose a Provider for Your Free 20-Minute Consultation

Mickell Lethco

Hilary Gibson

Gohar Jaffer (Remote Therapy Only)

To schedule an assessment, IQ testing, or therapy intake, email us at admin@braininsights.net