McLean: Autism Diagnosis, Assessment and Treatment

Continuum Autism Spectrum Alliance serves Northern Virginia, including Fairfax, Arlington, Falls Church, Prince William and Loudoun Counties, as well as the City of Alexandria and the City of Manassas. During the assessment process, each child receives a comprehensive functional assessment that identifies core deficits and problem behaviors that may be interfering with the child’s ability to learn and participate in daily life at home, school and in the community. Every child’s program is individualized to meet his or her needs, learning style and guided by what is developmentally expected.

Need assistance or have questions? Please feel free to contact us here or reach us directly at 1.800.828.5659

1651 Old Meadow Road Suite 600
McLean, VA 22102
Phone: (800) 828.5659
Fax: (866) 857.0246





Meghan Hoffman, M.Ed., BCBA

Clinical Director

MeghanHoffmanMs Hoffman has worked with individuals on the autism spectrum for 15 years. She received her Masters in Special Education with a specialization in Applied Behavior Analysis from George Mason University in 2006 and is a Board Certified Behavior Analyst. She worked as a teacher and supervisor at The Ivymount School for 11 years serving students aged 5 through 21. She has also served as an Adjunct Professor at George Mason University teaching graduate level coursework approved by the Behavior Analyst Certification Board and supervised graduate students in their internships through The University Practicum Program. Meghan continues to provide consultative services to families and schools, working with students aged 2 through 26. In addition to her role as consultant and professor, she provides trainings and workshops to schools and organizations throughout Maryland, DC, and Northern Virginia.


Leadership Team:

Haili Hartman

Behavior Tech Manager

Haili has a Bachelors of Science degree from James Madison University, MA

haili_hartman-e1437495268103-114x150and is currently enrolled in the Masters of Science in Applied Behavior Analysis at Northeastern University, Boston, MA. She is actively pursuing supervision to complete requirements to sit for the Behavior Analyst Certification Board exam. Haili has five years experience as an instructor providing 1:1 therapy to children with autism and other related disorders. Haili’s professional interests include vocational training, daily living skills, functional-communication training and helping to train other staff the most effective/ethical ABA practice. Haili is also the Behavior Tech Manager here at Continuum Behavioral Health. She is in charge of scheduling all of the Behavior Technicians, oversees the Lead Behavior Technician Team, recruitment of Behavior Technicians, maintains Behavior Technicians ongoing professional development and assists with the ABA Home Programming Training.


Alisa M. Huynh, BFA, BCABA

Board Certified/Licensed Assistant Behavior Analyst
alisamhuynh-150x150Mrs. Huynh is a Board Certified Assistant Behavior Analyst who is currently obtaining her Master of Arts in Applied Behavior Analysis (ABA) from Ball State University. She received her Bachelors of Fine Art from Rochester Institute of Technology where she also studied Clinical Psychology. Starting as a volunteer, she spent eight years working with children with special needs in early intervention programs in public schools and as a figure skating coach in the community. Since 2007, Alisa has been providing ABA services to children and young adults with autism and related disorders. Her professional interests include writing patient-specific research-based multi-component interventions, neurophysiological dysfunctions, and working with children and young adults with comorbid diagnoses.


Linda L. Isaza, M.S., BCBA

Board Certified/Licensed Behavior Analyst
lindaisaza-150x150Linda Isaza is a Board Certified Behavior Analyst with a Master of Science degree in Counseling from NOVA Southeastern University. Linda earned a Bachelor of Arts in Clinical Psychology and a Bachelor of Arts in Spanish from the University of Rochester. She began her training at the highly respected New England Center for Children where she served as a case manager on a residential team. Linda has worked as an ABA therapist in schools that utilize ABA as their treatment methodology for children with autism spectrum disorder and other developmental disabilities. Her professional experience has also included providing in-home services with Beacon ABA Services with an emphasis on the Verbal Behavior Model for teaching functional communication and language skills. Her professional interests include early intervention, social skills, functional communication and parent training. She believes that every child has a unique skill set and is dedicated to helping each child develop those skills to reach their full potential.


Meredith Kimener, B.A., BCABA

Board Certified/Licensed Assistant Behavior Analyst

Mrs. Meredith Kimener is a Board Certified Assistant Behavior Analyst and junior consultant with a Bachelor of Arts degree in Psychology from the Univer
meredithkimener-150x150sity of Pennsylvania. She has over 3 years experience working with individuals with Autism Spectrum disorders and other related developmental disorders. She began her career as an instructor providing one-on-one in home ABA services for clients ranging in age from 2 to 18 years old as well as center-based instruction focusing on generalizing behaviors and social skills. Meredith continued her work and now provides in-home ABA consultation in Northern Virginia. Her professional interests including working with military families, natural environment teaching, and early intervention.

Melina McCrary, M.S., CCC-SLP

Director of Speech Language Pathologymelindamccrary-195x300

Ms. Melina McCrary is an ASHA certified Speech-Language Pathologist who holds a Master of Science degree in Speech and Language Pathology from Gallaudet University and a Bachelor of Science degree in the fields of Health Sciences and Communication Sciences and Disorders from James Madison University. Prior to beginning her graduate studies, Ms. McCrary worked with children on the autism spectrum across settings as a Residential Teacher at the Melmark School in Berwyn, Pennsylvania.


Rebecca Rath, M.S.

Director of Occupational Therapy 
rebecca-rath-e1470251439380-150x150Rebecca J. Rath, holds a Master of Science Degree in Occupational Therapy from Thomas Jefferson University.  Rebecca’s extensive experience with the pediatric community includes children from birth through the elementary school years in a wide range of medical and educational based settings.  Rebecca’s experience includes many pediatric diagnoses, but she is especially recognized for her work as a Certified Early Intervention Provider for the State of Virginia.  Rebecca’s clients on the autism spectrum continue to benefit from her advanced training and knowledge in sensory processing disorders. Rebecca combines her expertise with sensory, visual, and fine motor skills to improve children’s independence with written communication in the classroom.  Her special interest and expertise in the science of handwriting can be seen in an article she authored, Handwriting 101, Washington Parent, April 2003.  Rebecca has designed and executed many therapeutic programs and is excited to launch the OT program here at Continuum to better serve our community


Paola Romero, M.Ed.

Clinical Coordinator-Training Manager

Paola Romero has a Master’s degree in Special
paola-romero-m-ed_-150x150 Education with a certificate in Applied Behavior Analysis from George Mason University. She is actively pursuing supervision to complete requirements to sit for the Behavior Analyst Certification Board exam and has over 4 years of experience working with individuals diagnosed with autism spectrum disorders. Paola began her work in this field in 2011, as an ABA instructor in home settings with children between the ages of 4-6. Later, she worked as a Senior Teaching Assistant in the Autism Program at The Ivymount School located in Rockville, MD. In this position, Paola instructed students between the ages of 8-14 and was responsible for training other teachers and helping with classroom management. In 2013, she participated in a month long volunteer program in Cape Coast, Ghana helping a special needs school learn more about the principles of ABA and how to implement in the classroom. Her professional interests include furthering the use of ABA in other countries and the use of ABA in the public school settings.


Joshua Vickstrom, B.S., BCABA

Board Certified/Licensed Assistant Behavior Analyst
photo_on_2015_01_02_at_22-59_4-300x195Joshua Vickstrom is a Board Certified Assistant Behavior Analyst with a Bachelor of Science degree in Psychology from the University of Mary Washington, Fredericksburg, Virginia. Joshua started providing direct service to individuals diagnosed with autism spectrum disorders in 2009 and pursued national certification and licensure to provide higher quality services to this population. With over six years of experience, he has treated the gamut of the Autism Spectrum; serving clients between 2 years and 45 years of age with varying degrees of diagnosis severity. He has also worked with individuals that are typically developing, but have comorbid diagnoses: individuals with Down’s syndrome, individuals with traumatic brain injury, and individuals with psychological disorders. Currently, Joshua specializes in the treatment of adolescents and adults, focusing on social skills, sexual education, and emotional regulation through Applied Behavior Analysis.

Mary Von Witzleben, PhD, BCBA-Dmary-autizm-more

Board Certified/Licensed Behavior Analyst-Doctoral

Mary earned her PhD in school psychology from University of South Florida in 1998 and became a Board Certified Behavior Analyst in 2010. With over 20 years experience, Mary has worked as a teacher, a school psychologist, a school administrator and as an educational consultant throughout the United States.

Tammy Ko, M.Ed., BCBA.

Senior Behavior Consultant


Tammy found her passion of life in behavioral health during her senior year in college when volunteering for an early intervention program for children with autism. She received her Bachelor of Arts degree in Psychology from UCLA, and later she went on to earn her Master of Education degree in Special Education from Texas A&M University, emphasizing in Applied Behavioral Analysis. While in Texas She worked as an autism therapist in a center-based program, leading and designing all kinds of group and one-on-one therapies for individuals across autism spectrum and other developmental disorders with ages ranged from preschooler to adults. She became a Board Certified Behavior Analyst and joined Continuum in 2016, providing consultation and working with children in the autism spectrum as well as with other psychological disorders. Other than her professional interests in functional communication training, social skills, parent training, and promoting public awareness, she also loves singing, reading with a cup of tea, traveling with her husband, and playing with their cat Twinkle.

Ben Hogge,

Kiran Talvadkar,