How can we Help?
Parenting Support Through Evidence-Based Interventions
Empower your parenting with tools to manage big emotions, build routines, and strengthen connection. Our one-on-one coaching meets you where you are.
Comprehensive Child and Family Intervention Services
We focus on behavioral health and development with compassionate, research-based support.
Behavior Support & Parenting Tools
✔ Manage challenging behaviors
✔ Functional Behavior Evaluation
✔ ADHD & Executive Functioning
✔ Conflict Resolution
Mental Health Related Concerns
✔ Anxiety, Depression, Mood Disorders
✔ CBT & DBT Treatment Options
✔ Nutrition/Eating Issues
✔ Trauma Based Concerns
School-Based Developmental Concerns
✔ Navigating IEP’s & 504’s
✔ How & When to intervene
✔ Interpreting school evaluations
✔ IDEA Law & Compliance
Guiding Families with Care, Clarity, and Compassion.
Get to Know the Heart Behind Our Work
About
Katy Psychological Services
Every meaningful service begins with a caring professional. At Sonoma Behavioral Consulting, our approach is rooted in deep expertise, genuine compassion, and a belief in every child’s potential.
Learn more about our founder, Lisa Biddle, and the values that guide our work with families.
Tell us what's on your mind
Select the option that is most relevant.
Our services support autism, ADHD, anxiety/depression, learning, and other intellectual disabilities.
From IEP meetings to school-based behavior support, we help you understand your child’s rights and create plans that work in the classroom. Request an Appointment
We offer tools and strategies to strengthen parent-child relationships and manage challenging behaviors at home — no judgment, just support. Request an Appointment
We conduct functional behavior assessments (FBA) and collaborate with your school or provider to create personalized support strategies. Request an Appointment
At Sonoma Behavioral Consulting, we believe in the power of thoughtful, expert care. Our licensed behavior specialists and consultants are here to support your family’s journey with empathy, skill, and evidence-based practices. Whether it’s developing a plan for challenging behaviors, providing advocacy in the school setting, or offering tools for parenting with confidence — we’re here to help you move forward with clarity and hope.
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Positive Parenting Tools
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Autism / ADHD / Learning Supports
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Anxiety, Depression & Related Disorders
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Social Skill Development
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Education & School-Based Interventions
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IEP Development & Compliance
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Behavior Interventions & Assessment
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Executive Functioning Skill Development
Our Katy Psychologist and Therapist team
Meet Our Licensed Team
Dr. Dyanna Martinez Villesca
Owner | Licensed Psychologist,
School Psychologist (LSSP)
Dr. Carolyn Ha
Licensed Psychologist
Dr. Melissa Grisdale
Licensed Psychologist School Psychologist (LSSP)
Dr. Alexa Fagan
Licensed Psychologist
Emily Sorem, M.A.
Licensed Psychological Associate
Katie Robertson, M.Ed., LPC
Licensed Professional Counselor
B. has been approved for special needs. The school loved your report- they said it was so detailed that they don't have to do anything. Finally, we are getting some help for him!! I can't thank you enough.
T.G.-parent
"We are extremely thankful for everything you have done for (our son) and the peace of mind this has given us as a family. We are always worried about our children's academic future and this approval has given us some relief and lots of hope for (our son's) continued education. Thank you for everything!"
M. Garza-parent
"Thank you for helping me. You are professional and kind and I really appreciate what you've done to help me through my situation".
S.B. former client
Let’s Take the Next Step Together
Not sure where to start? Just reach out.
Call (707) 803-1707
We're here to answer your questions and connect you with the right therapist.
Expert Help,
Right When You Need It Most
