Dr. Barry holds a PhD in special education, disability, and at risk populations from the University of California at Santa Barbara as well as an MA in Educational Psychology. She has provided behavioral consultation since 1994. Dr. Barry is a tenured, Full Professor, at the University of West Florida (UWF) and is the Director of the Office of Applied Behavior Analysis at UWF, providing worldwide professional education for people to become Board Certified Behavior Analysts. In addition, Dr. Barry is a Trustee of the Cambridge Center for Behavioral Studies. Dr. Barry directs clinical practice company-wide through consultation with clinical directors, coordinators, supervisors, and interventionists.

Dr. Holdsambeck has over 35 years of clinical experience delivering ABA services to people with developmental disabilities, including those on the autism spectrum. He served his country as a Captain in the USAF-R; his community as a professor of behavior analysis for over 25 years; and his field as Executive Director of the prestigious Cambridge Center for Behavioral Studies. He was selected as the 2010 distinguished colleague by the Chicago School LA's department of ABA. In 2011, he received the outstanding service award from the Cambridge Center for his work in bringing evidence-based practices to California.

Hayley Heitzig began her career as a Behavior Analyst with Holdsambeck Behavioral Health in 2004. Hayley graduated from C.S.U. Fresno with a Master’s Degree in Psychology and an emphasis in Applied Behavior Analysis. Hayley is a Board Certified Behavior Analyst. She is the Autism Clinical Coordinator for the Early Intervention Program for children with autism in the Central Valley. She also oversees the Early Intervention Program for children with autism in the greater Bakersfield area.


Namaz Habroun completed her undergraduate degree at California State University of Bakersfield in Criminal Justice with a minor in Psychology. Namaz received her Master of Arts degree in the comprehensive program in Exceptional Student Education at the University of West Florida in 2016. She has over ten years of experience working with children, adolescents and adults who have autism, intellectual disability, down syndrome, as well as varying degrees of behavioral challenges and learning disabilities. She is currently studying to sit for the BCBA exam and plans on becoming Board Certified Behavior Analyst in the near future. Namaz currently provides clinical direction for services in the greater Bakersfield area. ​


Megan Stollmeyer, MA, BCBA

Director, Holdsambeck Behavioral Health, Southern Santa Barbara County

Tamera Wong, MS, BCBA

Director, Holdsambeck Behavioral Health, Fresno & Bakersfield

Leasha M. Barry, PhD, BCBA-D
Consulting Clinical Director, Holdsambeck Behavioral Health

Natalie Martin has experience providing ABA services since 1994 to a wide range of people with developmental disabilities throughout Ventura County. She began her career as a behavior interventionist with a specialty in parent training. Natalie directs clinical ABA services for Holdsambeck Behavioral Health in Ventura County. She holds a MA in Special Education and is a Board Certified Behavior Analyst (BCBA).


Shane Knoll, MS Ed, BCBA

​Director, San Luis Obispo & Bakersfield County

Jennifer Posey, MA, BCBA

Director, Northern Santa Barbara County

Mieke San Julian has provided services to individuals served by regional centers since 1997. Mieke has served as a Behavior Interventionist, Senior Behavior Interventionist, Clinical Supervisor and Behavior Analyst. Mieke has provided services directly and supervised services for people with Autism, Pervasive Developmental Disorder-Not Otherwise Specified, Aspergers syndrome, Intellectual disability, Oppositional Defiant Disorder and Down syndrome.


leadership team

Mieke San Julian, MA, BCBA
Director, Sacramento

Natalie Martin, MA, BCBA

​Director, Ventura County

Shane started his career working at a residential center for children with autism. Since then he has worked in a variety of settings including home-based ABA, treatment facilities, adult homes, and in the public schools. Shane's educational background is in special education. He received his masters in Special Education from Simmons College and later became a Board Certified Behavior Analyst. Shane has worked in the field of Applied Behavior Analysis since 2009. When not working, you can find Shane coaching sports or spending time with his wife and young daughter.


Hayley Heitzig, MA, BCBA
Director, Fresno & Bakersfield County

Topa Augustine, MS, BCBA
Director, San Luis Obispo & Bakersfield County

Tamera Wong began her career as a Behavior Analyst with Holdsambeck Behavioral Health in 1994 after graduating from C.S.U. Fresno. Tamera holds a Master’s Degree in Psychology from Walden University. She earned her Applied Behavior Analysis post-graduate degree from University of North Texas. Tamera directs Behavior Intervention Services in the Central Valley. She is the Clinical Director for the Early Intervention Program for children with autism in the Central Valley. She also helps to oversee the Early Intervention Program for children with autism in the greater Bakersfield area.

Topa is originally from Santa Fe, NM. She completed her undergraduate degree in psychology at Western Michigan University and her master’s in Applied Behavior Analysis in Boston at Northeastern University. In Boston she also became a Board Certified Behavior Analyst while working at the New England Center for Children with both residential and early intervention settings. She has 10 years of experience working children and adults diagnosed with autism and other related disorders. She is particularly interested in teaching communication and social skills and loves working with families and collaborating with behavior technicians. She is excited to become an instructor in the Applied Behavior Analysis program at UWF this fall. She loves to spend any spare time chasing around her two-year-old daughter.


Megan moved to Santa Barbara, California from Walnut, California in 2007 to pursue her undergraduate degree in Psychology. She quickly became passionate about investing in the lives of those with developmental disabilities. Megan began working at Holdsambeck Behavioral Health in 2008 as a behavior interventionist and can still recall her excitement when she realized there was actually an evidence-based treatment that could improve behavior, and consequently improve lives.  Megan has since completed her graduate studies and has also developed a passion for growing as a leader and communicator while developing a team of well-rounded behavior interventionists who have a passion to change the lives of individuals they serve.


Rob Holdsambeck, EdD, LCP, BCBA-D
CEO, Holdsambeck Behavioral Health

Executive Director, Cambridge Center for Behavioral Studies

Jennifer Posey has been working with children with developmental disabilities since 1995.  She graduated with a BA in Behavior Psychology in Maryland and began working in a residential school setting for children with autism and significant challenging behavior.  Since then she's worked in a variety of capacities at a variety of settings including public schools, non-public schools and home-based ABA.   She has an MA in Special Education and a became a Board Certified Behavior Analyst in 2013.  She is passionate about helping individuals, families, and communities.  She strongly believes we can "save the world with ABA".     Jennifer oversees clinical ABA services for Holdsambeck Behavioral Health in Northern Santa Barbara County.  

Holdsambeck Behavioral Health is a leading provider of quality behavior services. Our goal is to develop repertoires of behavior through motivating and meaningful behavior analytic sessions.We specialize in providing in-home Applied Behavior Analysis (ABA) interventions to children, teens, and adults with developmental disabilities including Autism Spectrum Disorder.

Namaz Habroun, MA
Clinical Coordinator, Greater Bakersfield Area