Desiree Holland
Regional Office Manager

Gloria Walker, MA, BCBA
Regional Clinical Director & Co-founder



















Kim Martin, RBT
Assistant Clinical Supervisor

Desiree Holland came on board with OPAT as the Office Manager in November 2018. She has 20 years of managerial experience in various industries such as Retail, Hospitality, Health and Fitness, and now Office Administration. Her strong leadership and organizational skills are contrived from placing the highest value in excellent customer service, a strong work ethic, consistency, communication and teamwork. She is passionate about people, young or grown, and also encouraging others to reach their highest potential. She believes that regardless of the industry, one thing always remains constant, if we can allow ourselves to want to be better every day, flourish individually and as a team, we can never be less than successful in life. She has thoroughly enjoyed witnessing the growth in the patients and Staff at OPAT and she feels honored to be but a small piece of the puzzle that has changed so many lives so far. During her free time she enjoys traveling, competitive bodybuilding, and karaokeing.

Brianne Jarrett, MS, BCBA
Program Manager

Development Center

Kimberly Martin is an Assistant Clinical Supervisor at OPAT. She has 19 years of experience working with children and adults with Autism, other developmental disorders, and behavioral challenges. She is passionate about helping people with Autism achieve their true potential. Her interests are caring for all of her pets, working out at the gym, reading, and hanging out with friends. 

Jennifer Alvarez is a Clinical Supervisor who joined OPAT in February 2018. During her time at OPAT, she began her journey as a behavioral therapist and then became a Registered Behavior Technician. She wanted to continue her education in Applied Behavioral Analysis (ABA) and graduated with her Mater’s in ABA from National University in 2020. With her hard work and dedication to this field, she earned her certification and became a Board Certified Behavior Analyst. Jennifer loves to see the patients' progress and watch the patients learn new skills.

In 2020, Bryanna Becerril graduated from National University with a Master’s in Applied Behavior Analysis and has continued to demonstrate her dedication to her patients by becoming a Board Certified Behavior Analyst in 2021. She has been working in the field since 2015. Over the course of that time, she started out as a Behavioral Therapist and became a Registered Behavior Technician. Bryanna has demonstrated exceptional competence with behavior analytic principles and was promoted to a Clinical Supervisor then Program Manager. What she loves most is working with the patients knowing that it is making a difference in their lives. With the support from her fellow colleagues and the families, working at OPAT has been an amazing learning environment. 



















Gloria Walker is the Co-founder and Regional Clinical Director at OPAT. She is a Board Certified Behavior Analyst with her Master’s degree in Teaching with an emphasis in Applied Behavior Analysis. Gloria has experience with designing, implementing, and evaluating programs for children with disabilities.  She also provides training, in both English and Spanish, in behavior management for parents who are in need of immediate guidance.  Over the years, Gloria has focused on helping parents cope with the difficulties that come with the diagnosis and helping the families effectively implement the behavior plans in order to ensure maximum potential in the overall quality of life for their children.  Gloria’s education, passion, and experience are the driving force behind her dedication towards helping families and children with autism and other disabilities.

OPAT

Brianne Jarrett has a Master’s in Applied Behavior Analysis and continued to demonstrate her dedication to her patients by becoming a Board Certified Behavior Analyst in 2021. She has been working in the field of ABA for 11 years. Brianne enjoys seeing the progress of all the patients, and loves when parents express their happiness that their child generalized a skill at home. What really drives her is analyzing behavioral data before and after a behavior intervention plan is implemented and graphing the progress of each individual patient.  

Jasjit Sahota-Sangha, MS, BCBA
Clinical Supervisor

Team OPAT

Gaoia Yang is an Assistant Clinical Supervisor who began working in the Applied Behavior Analysis field in 2013. She is currently working on her child development degree and aspires to become a Board Certified Behavior Analyst. She has over 10 years of experience working with individuals with Autism. Her goal is to implement interventions based on ABA principals to help individuals with autism. 

Bryanna Becerril, MS, BCBA
Program Manager

Jasjit joined OPAT in October 2017 after receiving her B.S. from UC Davis. During her time at OPAT, she has transitioned from a Behavioral Therapist to becoming a Registered Behavioral Therapist and into a Clinical Supervisor.  Watching the children develop new skills and reach their full potential has led Jasjit to pursue a career as a BCBA. She graduated from National University with an M.S. in Applied Behavior Analysis in April 2020 and after all of her hard work and dedication to this field, became a Board Certified Behavior Analyst in 2021. Jasjit speaks, writes, and reads both English and Punjabi fluently. In her free time, Jasjit likes working out at the gym with her fiancé or traveling to new places.

Jennifer Alvarez, MS, BCBA
Clinical Supervisor

Gaoia Yang, RBT
Assistant Clinical Supervisor