BSP Team


Melissa Sweitzer, Ph.D., BCBA-D

Executive Director
Licensed Psychologist

Dr. Sweitzer is a licensed psychologist and Board Certified Behavior Analyst, specializing in Applied Behavioral Analysis and developmental disabilities. Dr. Sweitzer received her Doctorate degree in Educational Psychology from the University of Southern California and has over 30 years of experience working with individuals with challenging behaviors in a wide range of settings including home, school, residential settings and vocational day programs. She has conducted numerous workshops and presentations on applied behavior analysis nationwide.

During her extensive career, Dr. Sweitzer has held clinical and management positions at the Florida Mental Health Institute’s Parent and Child Training project, the Regional Center of Orange County, and private treatment agencies. In 1990, Dr. Sweitzer started a behavior consulting practice in Southern California that supports children and adults with developmental disabilities. In 2005, she founded Behavioral Support Partnership, providing in-home treatment services for children with developmental disabilities and their families, where she currently serves as President and Executive Director.

Directors & Managers:

Marina-GarciaMarina Garcia, M.A., BCBA
Clinical Director

Marina is a Board Certified Behavior Analyst with over a decade of experience working with children diagnosed with Autism and other developmental disabilities. She has extensive experience working in the home, community and school settings. Marina enjoys working with the early intervention population and is especially passionate about educating and empowering our Spanish speaking families.

Marina has a Master’s degree in Teaching with an emphasis in Applied Behavior Analysis from National University and a Bachelor’s Degree in Psychology from UCLA. Marina has extensive training in Applied Behavior Analysis, including Pivotal Response Treatment and Positive Behavior Support strategies. She is certified in PECS and has attained Level III Certification in PRT. Marina has taught coursework on Autism at Cal State Los Angeles and behavior management classes at Harbor Regional Center and Regional Center of Orange County. She has also volunteered her time to speak at various Spanish speaking support groups throughout Orange County.


Velika Lee, M.S., BCBA

Manager of Early Start Services

Velika started working with children and families while she was living in Bulgaria in the field of Social Work and specialized in connecting families from ethnic minority backgrounds to social services. Velika worked as a 1:1 Behavior Therapist with BSP from 2014-2015 before moving to Singapore. During her time abroad, Velika continued her work in ABA providing services to clients from across the world. Upon returning to the United States in 2017 and obtaining her BCaBA, Velika started back as a Sr. Parent Training Consultant with BSP.  Velika would like the focus of her career to be within the area of Early Intervention. In her free time, Velika enjoys spending time with her family, reading, traveling and practicing yoga.

Clinical Supervisors:

Katherine 1-1Katherine Nichols, M.S., BCBA

Katherine earned her Masters of Science degree in Applied
Behavior Analysis from the California State University, Northridge and obtained her Board-certification as a Behavior Analyst in 2016.  She has been working in the field of Applied Behavior Analysis (ABA) for more than a decade, moving from Direct Interventionist to Program Coordinator to Clinical Supervisor.  She has worked in both in-home and school settings, with a wide range of ages (3 year-adult) and varying diagnoses. Katherine has specialized experience working with individuals with high-intensity challenging behaviors such as aggression and Self-Injurious Behaviors (SIB).  Katherine is a self-described “ABA nerd” who truly enjoys the science of behavior and what we have learned from it! When she is not playing with a client, Katherine spends her free time camping, making art and playing her own daughter.


Janis Niemann, M.S., BCBA

Janis Niemann is a Board Certified Behavior Analyst who holds a Master’s of Science in Counseling with a concentration in Advanced Behavior Analysis from Nova Southeastern University. Janis is originally from Buffalo, NY where she obtained her Bachelor’s Degree in History Education. Janis has over 9 years of experience working with children who have special needs and their families. Her interests include early intervention, social skills facilitation, and working with individuals with challenging behaviors.

Program Supervisors:

Samantha Rose Garcia-McDonald, M.S.

SamanthaSamantha has a Master’s Degree in Applied Behavior Analysis from National University and three years of experience assisting children and their families. She received a double major in Sociology and Psychology from California State University, Long Beach. During her time in undergraduate school, she worked as a Social Psychology Research Assistant and then a Child Psychology Research Assistant. It was at this time that she began working with children on the Autism Spectrum and fell in love with the field of applied behavior analysis with its clinical efficacy. Samantha’s interests include reading, yoga, cinema, and exploring art museums and new places.

Senior Parent Training Consultants:

Anca 2.2019 Spotlight PhotoAnca Barsan, M.A./ M.S.,

Anca has dedicated the past 12 years to exploring the helping fields of Psychology and Applied Behavioral Analysis.  She graduated with a Bachelor’s Degree in Psychology from Northeastern Illinois University, a Master’s Degree in Clinical Mental Health Counseling from Ball State University, and a Master’s Degree in Applied Behavioral Analysis from National University. Anca’s current focus revolves around contributing to the well- being of children and families affected by Autism and other related developmental disorders. One of her greatest passions has been improving child-parent dynamics.  As a Senior Parent Training Consultant with BSP,  Anca  receives much joy in helping children develop a voice of their own and assisting parents in the process of navigating challenging behaviors and supporting  their children’s growth  with  grace and ease.  Anca is involved in several healing practices and creative projects, dedicating most of her free time to personal growth, friends, family, art and nature.

Sunny 1-1Sunny Cheon, M.S.

Sunny has a Master’s Degree in Applied Behavior Analysis from National University. She received her Bachelor’s Degree in Psychology from the University of California, Riverside. Sunny has been working with BSP since 2016 and enjoys working for children with Autism and other developmental disabilities. She values the field’s unique opportunity to work not only with the individual but empowering the family as a whole. Sunny hopes to open more doors for the Korean community using her bilingual skills and further enrich the diversity of the support group. In her free time, Sunny enjoys a variety of arts, listening to music, and traveling.

IMG_3687Stephen Hampson, B.A.

Stephen started at BSP in 2016 after receiving his Bachelors Degree in Linguistics from Cal State Fullerton.  Stephen started as a 1:1 Behavior Therapist and had the privilege to work with a lot of early intervention clients.  That experience helped shaped his passion for working with younger children.  After a year at BSP, Stephen applied and became a registered behavior technician (RBT).  In late 2017, Stephen became a parent consultant and began teaching behavior management and Pivotal Response Treatment strategies to parents.  After 2 years of experience, Stephen was promoted to Senior Parent Consulant.  Stephen will soon apply for a Masters Program en route to his eventual BCBA.  Stephen‘s interests include hanging out with his family, video games, and making people laugh with middling to passable humor.

Francisco 1-1

Francisco Hernandez, B.A.

Francisco has always wanted to and continues to serve people and their families. Through a passion for helping, statistics, and evidence driven practices he is able to assist others with their best interests in mind. In the three years at Behavioral Support Partnership, Francisco has honed his skills in Pivotal Response Treatment, parent education, and case supervision. He has received his Bachelor’s in Psychology and Social Behavior from the University of California Irvine (UCI) and aspires to continue on the path towards higher education.