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About Us

It is not a question of starting. The start has been made. It is a question of what's to be done from now on.

- BF Skinner



We have a passion to give each child the opportunity to fulfill their potential, to grow, and to give them hope for creating a rich and meaningful life filled with possibilities through providing high quality treatment.



We believe each child has the potential to succeed in life. It is our responsibility as caregivers to bring out that potential so they may live to the fullest. Cornerstone equips its caregivers, parents, teachers, and therapists alike with tools that will guide and nurture our children. We provide individualized training and treatment for all, group collaboration, and support to everyone who comes through our doors.



COMPASSION            Taking active steps in the shoes of our families and providers to better recognize their needs.

EXCELLENCE             A dedication to provide meaningful individualized growth to our families and providers.

ACCOUNTABILITY     Being supportive, reliable & honest in honoring our providers, families, and community. 



We focus on building a therapeutic relationship with the child and family to help understand their individual needs and develop a treatment plan that brings significant improvement to each family member. 

Our Team

Meet the Founders

Cornerstone Behavioral Analysis was founded by two behaviorists who have been serving the community since 2012. Passionate about providing the best quality service possible for our clients with the goal of independence in mind, while also fostering a strong foundation and skillset for the therapists. The therapists' competence at Cornerstone Behavioral Analysis is ensured through ongoing training, supervision, and collaboration.

Gretel Diaz

Clinical Director/ Board Certified Behavior Analyst / Founder

Gretel Diaz is a Board Certified Behavior Analyst (BCBA) with a Master’s degree in Psychology and a specialization in Applied Behavior Analysis from Capella University. Gretel started working in the field of applied behavior analysis in 2012. She has worked with children with different diagnoses and collaborated with different disciplines to create comprehensive treatment plans. Her passion for ABA and her love for children drive her work. She is constantly learning to incorporate new research-based technologies to become better in her profession and provide her clients with the best possible services.

Eimi Mejia​

Administrative Director / Board Certified Behavior Analyst / Founder

Eimi Mejia’s career started early on before she even knew of the field of Applied Behavior Analysis. Raised by parents who owned a successful dog training business in Japan, she was exposed to basic analyzing and changing behavior principles. She was then officially introduced to ABA in her undergraduate years at Florida International University and instantly became devoted to providing quality services to children with special needs. Since entering the field in 2015, she has worked with various families tailoring to their own particular needs. She specializes in early interventions, school-age children, and parent training. She is also passionate about providing a solid foundation and training for those who are entering the field.



Cornerstone Behavioral Analysis was founded for clinicians passionate about serving the community and giving back; and for families in need of exceptional and high-quality services. Our approach to our clinicians and team members is individualized so that everyone can aim for their maximum potential. We will actively take steps in the shoes of our families and providers to recognize their needs, provide meaningful and individualized growth, and be supportive, reliable, and honest in honoring each participating member. As Cornerstone Behavioral Analysis strives to achieve our vision, mission, and values, we profess our commitment to Diversity, Equity, and Inclusion (DEI). We welcome individuals with all backgrounds who are eager to advance our vision, mission, and values forward together. Each clinician and team member is encouraged to lay their talents and passions out on the table as we value each member who joins our team. We believe that no one clinician has the same experience, knowledge, or background.

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