Jigsaw Leadership

Melissa Anderson
Melissa Anderson, BCBA, LBA
Clinical Supervisor & Client Advocate

Melissa Anderson is a Board Certified Behavior Analyst (BCBA) in the state of Arizona. Melissa has an undergraduate degree in Elementary and Special Education from the University of Dayton and a Masters Degree in Early Childhood Education from Northeastern Illinois University, where she also taught Graduate courses for the School of Education. Melissa has been in the field of autism and applied behavior analysis for 20 years. Melissa began her career working as a multi needs teacher for a special education cooperative in the Western Suburbs of Chicago. There, she realized her passion for working with kids with ASD. She moved roles within her organization and worked as a behavioral consultant for children, staff and families in over 16 different school districts. Melissa began her coursework in Behavior Analysis, eventually obtaining her board certification. Melissa has been in the Phoenix area for the past 5 years, working to support clients, families and schools in the area of applied behavior analysis. Melissa uses a combination of techniques, such as verbal behavior, natural environment teaching, and discrete trial to meet the needs of her clients. Melissa provides direct training to families, therapists and community members to help clients generalize their skills and promote independence. Melissa has a passion for working with children and families to create positive change in the home and community.

Brett Bernstein
Client Services Director, Founder & CEO

Brett earned Bachelor of Science Degrees in Business Administration in Finance and Management Information Systems from the University of Arizona. After consulting for IBM and PeopleSoft Corporation, Brett founded Helio Group, an information technology consulting practice that served Fortune 500 customers. Brett’s endeavors continued with the founding and development of a clinical research informatics software business supporting NIH funded clinical research studies. Brett founded an Arizona-based nonprofit called MORIAH Cooperative that supports children with varying special needs.  Brett served as a Board and Executive Committee member of Pardes Jewish Day School. Brett is a member of the United Healthcare Community Plan Governance and Member Advocacy Committees. Brett and his wife have two wonderful boys who live in Phoenix, Arizona.  After personally experiencing the world of Autism, Brett’s life work focuses every day on assisting families in support of their children.

Beth Carrasco

Sara “Beth” Carrasco, BCBA, LBA
Clinical Director

Beth is a Board Certified Behavior Analyst, working with children with autism and other developmental disabilities since 2012. Beth holds a Masters of education from the University of Massachusetts and is passionate about the field of Applied Behavior Analysis (ABA). Beth takes a holistic approach, supporting children and their families by recognizing each individual’s strengths, and incorporating various targeted strategies with a focus on maximizing each child’s motivation. Beth has experience working with children ages 2-21 in settings including school, home and community based instruction. Beth’s leadership started with Jigsaw in 2016 when her and her family relocated to Arizona from the Washington, D.C metro area. Beth strives to make meaningful changes and improvements in the quality of life for each family she serves.

Rachel Denniston

Rachel Denniston, RBT
Assistant Clinical Supervisor

Rachel is a Registered Behavior Technician that has been in the field since 2021. Rachel has been working with children in various educational, recreational, and home settings for 8 years. Originally from Nebraska, Rachel received her Bachelor’s in Child, Youth, and Family Studies from the University of Nebraska – Lincoln. Rachel is currently pursuing her Master’s degree in Applied Behavioral Analysis at Arizona State University. She currently resides in Phoenix with her husband and two dogs and is awaiting the arrival of her first child.

Leah Fairweather

Leah Fairweather, BCBA, LBA
Clinical Supervisor & Client Advocate

Leah Fairweather is a Board Certified Behavior Analyst and Licensed Behavior Analyst in the state of Arizona. With 15 years of experience in the field of Applied Behavior Analysis (ABA), Leah is passionate about working with individuals with autism and other developmental disabilities to improve their quality of life. She earned a Bachelor’s Degree in Society, Ethics and Human Behavior from the University of Washington and Master of Arts in Special Education: Applied Behavior Analysis from Arizona State University. Leah has taught in an inclusive classroom and has provided ABA services in homes, clinics, schools and community settings with children from ages two to adolescence. Using the principles of ABA, Leah develops individualized goals and treatment plans based upon the unique needs and interests of each child. Leah understands the value of collaborating with families and other professionals to ensure the quality of care for her clients. Leah resides in Gilbert with her husband and four children.

Elizabeth Hendrix

Elizabeth Hendrix, BCBA, LBA
Clinical Supervisor

Elizabeth is a Board Certified Behavior Analyst with over 20 years of experience supporting individuals with autism and other related disorders. Her passion for helping those with ASD and their families was formed early in her adult life when her brother was born with Down syndrome and later diagnosed with ASD. Being a witness to his accomplishments and passions in life brings her immense happiness. She earned her Bachelor of Science degree in Psychology with an emphasis in Applied Behavior Analysis from Kaplan University and her Master of Science in ABA from Capella University. Elizabeth holds special interest in the areas of client assent, caregiver empowerment, and the implementation of ABA within foster care. Her experience ranges from toddler to late adulthood stages of life and in a wide variety of settings. She believes that the most important priority of ABA services is to create a treatment plan that improves the quality of life for each client in both their present life and their future. Elizabeth lives in Goodyear, Arizona with her husband, two teenage children and two rowdy dogs and enjoys spending her free time bonding with family.

Angela Hepworth

Angela Hepworth, BCBA, LBA
Staff & Clinical Development Director

Angela is a Board Certified Behavior Analyst (BCBA) as well as a Licensed Behavior Analyst (LBA) in the state of Arizona. Angela holds a Bachelor’s Degree in Human and Family Development from Arizona State University and a Master’s Degree in Psychology, with a specialization in Applied Behavior Analysis (ABA) from Capella University. Angela continues her work at Jigsaw Developmental Services since its inception in 2016. Prior to working in the field of ABA, Angela worked with children and families in various settings since 2000. Angela believes in the importance of making ABA therapy an enjoyable experience for the children and young adults that she works with, as well as tailoring each treatment plan to best serve the unique needs of each individual client. Angela is passionate about improving the lives of the children and families she serves using the principles of ABA. Angela lives in Gilbert and in her free time enjoys spending time with her husband, 3 children and 2 small dogs.

Zoie Scott

Zoie Scott, RBT
Assistant Clinical Supervisor

Zoie is a Registered Behavior Technician and has been within the field of applied behavior analysis since 2017. Zoie is a well-rounded RBT who constantly engages and encourages her clients. In addition to providing direct services as an RBT, Zoie is currently pursuing her Master’s degree in Applied Behavior Analysis at Arizona State University. From Las Cruces New Mexico, Zoie graduated from New Mexico State University with her Bachelors in Psychology. She currently resides in Phoenix with her two huskies, Kota and Zulu. 

Tanya Tompkins

Tanya Tompkins, BCBA, LBA
Clinical Supervisor

Tanya is a Board Certified Behavior Analyst and Licensed Behavior Analyst in the state of Arizona, working with children and young adults with autism and other developmental disabilities. She earned her Bachelor of Science degree with a major in Family and Child Studies, Child Development with an emphasis in Parent-Infant Specialist and Leadership Studies from Northern Illinois University in DeKalb, Illinois. In 2017, she graduated from Arizona State University with her Master’s in Education in the Curriculum and Instruction of Applied Behavior Analysis. Tanya started her career in the field of applied behavior analysis in 2014 as a 1:1 behavior interventionist working with children within the home and school setting and moved to a supervisory role in 2017. Tanya has experience working with individuals 1-22 in a variety of settings. Tanya strives to improve the quality of life for her clients and their families by tailoring each treatment plan to the individual client. Tanya currently resides in Buckeye, Arizona and loves spending time with her husband and daughter. 

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