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2020 Behavior, LLC was founded in Silicon Valley in 2018. We are an established, unique and highly experienced team of behavior analysts providing ABA services exclusively to families working at Google and Facebook. We serve clients from ages 18 months to 18 years with a diagnosis of autism and related disorders. 2020 Behavior, LLC provides assessment, consultation, direct intervention services, school support services and parent training in the following cites:

Northern California: Sacramento

Bay Area: Menlo Park, San Mateo, Campbell, Palo Alto, Los Altos, Mountain View, Sunnyvale, Cupertino, Saratoga, San Jose, Fremont, Milpitas, Newark, Pleasanton, Dublin, Oakland. 

Belmont, San Carlos

COMING SOON:  San Francisco, Marin County

All of our direct services are provided by BCBA level clinicians and our BCBAs have between 6 and 19 years' experience.


Charlotte (Charlie) Bell and Ramla Chaudhry founded 2020 Behavior, LLC in 2018. With almost 35 yrs of joined experience in the field of ABA, 2020 Behavior, LLC was created with the goal of offering a one-of-a-kind service to families in the Bay Area. Charlie and Ramla hand pick only the very best BCBAs, and take pride in maintaining a small, close knit and friendly company.

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Charlie Bell, MA, BCBA is co-founder of 2020 Behavior.


Charlie has over 18 years of experience in the field of ABA. Prior to founding 2020 Behavior, LLC Charlie worked within schools, clinics and home settings in Los Angeles, Raleigh, London, Sydney and Singapore. Until 2017 Charlie was based in Singapore where she managed her own practice and worked with families across SE Asia, providing direct services, parent training, supervision, school consultation, social skills training and international consultation to clients with ASD and related disorders.

Originally from the UK, Charlie has a Masters in Psychology from the University of St. Andrews (Scotland) and holds a post-graduate certification in Behavior Analysis from Florida Institute of Technology.


Charlie brings warmth, humor and creativity into her practice. Charlie specializes in Early Intervention and Verbal Behavior.



Ramla Chaudhry, MA is co-founder and Director or Services at 2020 Behavior, LLC.

Ramla has 15 years of experience in the field of ABA. Prior to 2020 Behavior, Ramla worked within schools and home settings in Milpitas, Los Altos, San Jose, and Monterey. 


Ramla has a Masters in Human Behavior.


Ramla is passionate about providing best practice for the 2020 Behavior families.

Ashley Jackowski, MA, BCBA has experience providing ABA as a behavioral therapist, program supervisor, and a clinical manager for ABA agencies in the East Bay Area of Northern California. 


Her favorite aspects of ABA include improving socially significant behaviors, providing inclusive and collaborative services with other professionals, and utilizing clinically effective assessment tools to help drive treatment. She also has a passion for family education and understands how crucial and imperative parent/caregiver training is for the generalization and maintenance of skills. 


She enjoys working with families primarily within their home and looks forward to providing treatment at a level that allows for the most direct support.  

Marina Contreras, MA, BCBA is from Texas and has experience working with children, adolescents, and adults diagnosed with autism and intellectual disabilities.  She first found ABA while coaching an inclusion gymnastics class in Austin, Texas. She fell in love with the science behind teaching young learners to play and interact with their peers.  Her main areas of interest include verbal behavior, social skills, and independent daily living skills. She is passionate about bridging gaps in skill acquisition in a thoughtful way to promote independence and generalization. 


Marina received her Masters in Special Education with Concentration in Applied Behavior Analysis. She lives in Palo Alto with her husband and cat named Oliver Meow. She enjoys yoga, hiking, camping, watching the Texas Longhorns, and reading.


Hagop Rouchanian, MA, BCBA has experience providing Applied Behavior Analysis as a behavioral therapist, associate clinician, clinical manager, and division training coordinator for ABA agencies in the Peninsula and San Francisco Region of Northern California. 


Hagop has provided ABA services in homes, schools, clinics and community settings for individuals diagnosed with autism ranging between the ages of 18 months to 28 years old. Hagop targets socially significant behaviors through observation and assessment tools and applies individualized, high quality, effective, and evidence based behavior analytic principles to bring forth meaningful changes. He recognizes that families are essential team members of the treatment team therefore he thoroughly enjoys disseminating behavior change principles and behavior change tactics to ensure families are equipped with the necessary tools for successful outcomes and generalization of skills outside the treatment setting.


When not at work, Hagop enjoys spending time with his fiancé, family, traveling, and playing basketball. 


Ashley Lara, M.Ed., BCBA relocated from Austin, TX to the Bay Area in October 2017. Her experience includes case management for children as young as 18 months as well as adults. Ashley began working in the field of ABA after being a respite provider for a young boy with Autism. A special area of interest for Ashley is working with families who are new to ABA and autism, teaching functional strategies that will work in day to day life.

Ashley enjoys hiking, paddleboarding, reading, and cuddling with her dog, Daisy, in her spare time. She continues to mentor graduate students in the field when her schedule allows.


Kinga Wołos-Zachmeier, MA, BCBA is originally from Poland and has had the pleasure of working with children, teenagers and adults with autism in variety of settings, including home, schools and clinics. She practiced ABA in Indiana before moving to California. Most recently Kinga served as Clinical Director at a school specializing in supporting students with behavioral challenges. 

Kinga is passionate about behavior analysis and she finds clients’ progress to be the most rewarding and motivating aspect of her work. She focuses on what clients can do instead on their deficits and helps them build up skills to reach their full potential. Kinga considers parent training to be an essential component of every successful intervention. 


Aside from ABA, Kinga enjoys traveling, learning about different cultures and hiking. She recently began to foster kittens. 

Ethan Lin, M.Ed, BCBA is a Bay Area native growing up in Cupertino. He discovered a passion for ABA when he started as a Behavior Therapist in his first job out of college. He has since received his Master's in Special Education Early Childhood Education from Vanderbilt University and his BCBA certification.


Ethan has experience working with toddlers, children, and young adults in home, center, and school-based settings. He loves using his skills and expertise to teach children of all ages new and functional skills to reach their highest potential. Besides that, he also loves to work with families of all backgrounds and to provide parent training.


In his free time, Ethan enjoys cooking, being outdoors, and having a good laugh. You can also find him playing sports, video games, and board games with friends and family.

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Kellie Bohlke, MA, BCBA, has experience with ABA and educational services to individuals ages 2-18 in schools, homes, and clinics in the Bay Area. She is passionate about using her background in Elementary Education and expertise in the field of Applied Behavior Analysis to help learner’s develop skills that build upon their strengths. Prior to joining 2020 Behavior, Kellie worked as a Lead Teacher, and then as the Clinical Director, for a non-public school serving students in need of intensive behavioral support and individualized educational programs. Her particular expertise includes teaching self-management, functional communication, social skills, and providing support to families and staff to encourage collaborative, learner-centered programs. Kellie is originally from Minnesota and enjoys spending time outdoors, hiking, dancing, biking, and reading. 

Shannon Durand, M.Ed., BCBA moved to the Bay Area from Central Texas in December 2010 with her husband and three children.  She has worked with children and young adults with autism and other developmental disabilities.


Shannon has worked primarily in the home and school settings, and specializes in working with young children in early intervention.  She also really enjoys teaching functional skills that lead to an individual’s greater independence which include increasing functional communication, using the toilet independently, eating a variety of foods, dressing oneself, etc.


Most recently Shannon has been a preschool teacher in an inclusive ABA-based classroom, and has provided additional supports to those students and families in the program with autism and other delays and disabilities.  She is happiest when working directly with children and their families!


Chelsea vonDeisenroth, MA, BCBA, grew up in the Bay Area and earned her Bachelor's degrees in psychology and sociology at the University of Oregon. She then attained her Masters degree in Applied Behavior Analysis at Ball State University. 


Chelsea most recently worked as a clinician at an ABA company in San Jose, where she assessed and treated infants, children, and teenagers that had been diagnosed with various developmental disabilities. She especially enjoys helping her clients improve their independent living capabilities by enhancing their social, communication, and adaptive skills. 


Besides ABA, Chelsea likes spending time with her family and friends. While she doesn’t have any pets of her own, she loves animals and she seizes every opportunity to pet dogs as they pass her on the sidewalk. She also enjoys hiking, exploring, doing yoga, and tending to her plants. 


Mischelle Valladares, M.Ed., BCBA has practiced as a behavior supervisor in homes and in the school setting throughout the
Bay Area. Her expertise is with early learners. In the school setting, she supported students diagnosed with autism, ADHD, backgrounds of trauma, and other disabilities. Mischelle collaborated across service providers, school staff, and parents. She enjoys teaching and growing with the families she works with.


Mischelle enjoys spending time outdoors and traveling. In her spare time, she enjoys doing jigsaw puzzles or spending the day with her family.

Shelly Bansal, M.Ed, BCBA pursued her love for the field of ABA by getting her Masters in ABA and then her BCBA certification. 


Shelly has experience working with clients from 1.5 years to 21+. She finds great gratitude in not only working with her kiddos but working with their families help ABA be most effective. Prior to joining 2020 Behavior, Shelly managed a large social skills program in San Jose and hopes to bring her knowledge in this area to the clients she will serve. 


Shelly is born and raised in San Jose, CA  and enjoys spending her spare time trying new foods and seeing new sights with her family and friends.


Anna Alinea, MA, BCBA, has worked with individuals with autism ranging from 2-25 years old, implementing treatment goals in the client's home, community, and school setting. She has most recently practiced as BCBA Clinical Supervisor, where she managed and trained multiple Behavior Technicians and designed treatment plans. She holds a Masters in Psychology with a concentration in Applied Behavior Analysis, as well as a PEERS certificate for adolescents.


Anna values evidenced-based treatments and collaborating with a multidisciplinary team. She is passionate about parent training, spreading knowledge of ABA principles, and supporting her clients ethically and effectively.

Danika Moskwa, MA, BCBA is a Bay Area native and has extensive experience practicing in the field of Applied Behavior Analysis, working in clinical, community, school, and home-based settings with individuals ranging from 2-26 years old, primarily those diagnosed with Autism Spectrum Disorder. 

Danika values the use of evidence-based approaches, staying up to date with new research findings, collaborating with multidisciplinary team members and tailoring programming to be individualized for each client. Her passion for ABA is driven by the positive outcomes her clients experience and she absolutely loves celebrating successes - both big and small!

April 2021: Danika is currently on maternity leave

Chelsea Sioxson Laxa originally served as a respite caregiver, then earned her masters degree in Special Education with a focus in early childhood. Chelsea has experience in school, clinic & in-home settings and has a special interest in leadership, diversity & inclusion. 


When she isn’t wearing her BCBA hat, Chelsea is the Executive Director and founder of a nonprofit that provides inclusive dance classes. She and her husband also run a travel blog that caters to other couples who enjoy vacationing on a budget! On her rare days off, you can find Chelsea laying in her hammock listening to true crime podcasts with her puppy next to her.