Our waitlist is currently FULL for autism assessments, ABA therapy, and Cognitive Behavior Therapy. Please call us at 423-531-6961, opt. 2 and we can refer you to other providers and add you to our contact list. You can also email us at info@chattanoogaautismcenter.org for more information.

Our clinic's fax number is 423-521-8094. Please be aware that our waitlist is full (see above) when faxing referrals for clinical services.


The Chattanooga Autism Center provides outpatient psychological services to people with Autism Spectrum Disorders.  These services include diagnostic assessment and testing of Autism Spectrum Disorders, Cognitive Behavior Therapy and Applied Behavior Analysis (ABA) Therapy. Some commonly asked questions are answered below. 


Click HERE for a Spanish Language Brochure of our clinic.

Autism Assessments

Our Autism Assessments are performed by our Licensed Clinical Psychologist: Karen Weigle, PhD. Dr. Weigle uses the Autism Diagnostic Observation Schedule, second edition (ADOS-2) as their diagnostic testing tool. The ADOS-2 is a standardized observational assessment of the individual’s communication, socialization and play/creativity along with other behaviors characteristic of Autism Spectrum Disorder. The ADOS-2 has many different modules depending on the client’s verbal ability and age and is appropriate for ages 12 months up to any adult age. The clinicians provide this test and other assessment tools to diagnose autism, including the level of autism, or to rule out autism. The results of the assessment are provided to the client in a detailed report. 


The assessment usually involves 4 visits. The first is an intake session where the parents, caregiver and/or individual being assessed answer questions, complete informational forms, are given diagnostic forms to complete, and are established as a client. The client is then scheduled for two assessment sessions on different days to allow for a broader sample of the client’s behavior. Each assessment session usually lasts between 40 and 50 minutes where the psychologist provides different modules of the ADOS-2. The psychologist then scores the assessment and any other diagnostic tools used and writes a detailed clinical diagnostic report. The parents and/or client attend a final follow-up session where the psychologist delivers the report, explains it in detail, answers questions, and discusses relevant referrals and future plans. 

Important Note: Individuals can seek and receive treatment while they are on the waitlist to be assessed. For example, if a child is demonstrating delays in speech or social skills or is experiencing sensory issues, anxiety, or behavior problems, parents should seek specialized therapeutic treatment immediately. Therapists such as Speech and Language Pathologists, Occupational Therapists, and ABA therapists will provide their own specialized evaluations and begin treatment. You DO NOT have to wait until after an autism assessment to seek therapy. The main purpose of the ADOS-2 assessment is to provide a diagnosis as well as a detailed professional report.

Individuals seeking an autism assessment should contact the CAC at 423-531-6961, opt 2.

Cognitive Behavior Therapy

Karen Weigle, PhD., Amy Rutherford, LPC., and Alyce Benson, LCSW provide Behavior Therapy and Cognitive Behavior Therapy for children and adults with autism spectrum disorders. These therapies have decades of empirical evidence supporting their effectiveness, particularly for teaching skills, decreasing anxiety, and improving mood. These are issues that persons with Autism Spectrum Disorders often face, and we are available and have the expertise to help.


These clinicians specialize in providing therapy for individuals with autism. They recognize how autism spectrum disorder can sometimes be the cause of anxiety, depression, social skill deficits, decreased motivation, tantrums, difficulty transitioning, and relationship problems. Some commonly asked questions are answered below. If you have further questions or need more information, please call 423-531-6961, opt 1.


What is Cognitive Behavior Therapy (CBT) ?

  • CBT is based on the idea that how we feel, think, and behave are naturally interwined. 

  • CBT helps individuals identify the relationships between thinking patterns, disruptive behavior, and emotional responses in upsetting or impairing situations. 

  • CBT requires active participation by the individual in the form of in-session exercises, as well as homework assignments to be completed in between sessions. 

  • Our therapists have adapted the principles and methods of CBT to address the needs of individuals with autism and families


What are these therapies best at treating? 

  • Teaching coping skills, social skills, emotional identification and regulation, education.

  • Parent child interaction and helping parents learn strategies for helping their children.

  • Dealing with emotions.

  • Understanding a diagnosis of Autism Spectrum Disorder.


Who can receive these therapies at the CAC?

  • Young children to adults of any age who have autism or suspected autism.

  • Verbal skills are needed to engage in Cognitive Behavior Therapy.

  • These therapies are also for parents who learn techniques to use outside of the clinic and to help them better understand their children with autism and their needs.


INSURANCE: Our Cognitive Behavior Therapists are "in-network" with the following carriers:

  • Blue Cross Blue Shield

  • TN Care (Blue Care, UHC Community Plan, Amerigroup, TN Care Select, Cover Kids)


  • Magellan

  • United HealthCare

  • TriCare

  • Alliant

  • Aetna 

  • Humana (out of network benefits only)

  • Self-Payment Plans

We are not in network with GA Medicaid, PeachCare, Amerigroup of Georgia, or Wellcare. However, we can offer a sliding fee scale for GA Medicaid members. Please call 423-531-6961, opt 2 if you have questions. 

ABA Therapy

Meghan Lindsay, BCBA and Anna Straussberger, BCBA direct the ABA clinic, which was opened in 2016. Both provide Applied Behavior Analysis (ABA) therapy and supervise other ABA therapists. The therapists meet with caregivers, provide functional assessments to determine why a child is behaving in a certain way, and then design treatment plans to train caregivers to implement strategies at home. ABA therapy is intensive and parents are expected to be involved in sessions and to record weekly data. It is usually provided in 2 to 3 hour sessions between 2 and 10 hours per week, all based on the severity of behaviors being displayed by the child. The therapy occurs in the clinic, home and community. 


What is Applied Behavior Analysis (ABA) Therapy?

  • ABA is a scientifically validated approach to understanding behavior and how it is affected by the environment.

  • ABA aims to decrease unwanted behaviors and increase desirable behaviors and skills

  • ABA teaches caregivers to interact differently with their child to attain and maintain desired results after therapy ends.

  • Since the 1960s, therapists have been applying ABA to help children with autism and related developmental disorders

Who benefits most from ABA Therapy? 

  • Children exhibiting behavior problems that significantly impact daily family life.

  • Individuals with language delays.

  • Individuals needing to learn discrete behaviors and skills.

Who can get ABA Therapy at CAC?

  • Children ages 18-months-old to  to 8-years-old. 


Call our office at 423-531-6961, opt. 1 to inquire about insurances we accept.

Clinical Staff

Karen Weigle, PhD is a Licensed Clinical Psychologist with 20 years of experience working with people with autism and other developmental disabilities and their families. She received her masters and doctorate from West Virginia University and completed Residency at Michigan State University. Dr. Weigle has extensive experience working as part of an interdisciplinary team in several medical specialty clinics and wards. She has provided psychological assessment and intervention services in a variety of contexts including in-home, school-based, clinic-based, agency-based, hospital-based, and community crisis response. She has previously directed programs that provided services spanning East Tennessee and had oversight over a large number of service providers. For over a decade, Dr. Weigle has trained family practice and medical specialty residents, special educators, community-based services providers, families, early intervention specialists, and laypersons. Her teaching experience varies from undergraduate psychology courses to special education graduate-level seminars. Dr. Weigle was the Clinical Director at The TEAM Centers from 2008 to 2011. She now provides autism assessments and behavior therapy at the Chattanooga Autism Center. Dr. Weigle is also currently associate director for the Centers for START Services at UNH, a national program designed to develop local crisis prevention and intervention services for persons with intellectual and developmental disabilities and mental health concerns.

Alyce Benson, LCSW, MS, is a Licensed Clinical Social Worker with over 18 years experience working with adults, adolescents, and children with developmental disabilities and co-occurring mental health disorders.  She received both her bachelor’s and master’s degrees in social work from the University of Tennessee, Knoxville. Ms. Benson specializes in working with individuals who present complex behavioral, medical, and psychological issues, and has extensive experience working in numerous community-based settings and with numerous interdisciplinary teams. She has provided seminars at both national and international conferences for NADD and AAMR. She is a member of the National Association of Social Workers and National Association for the Dually Diagnosed.  In 2014 Ms. Benson was awarded Social Worker of the Year for the state of Tennessee.

Meghan Just Lindsay, M.Ed., BCBA, has a bachelor’s degree in interior design, which helps her simultaneously see details and the big picture, and a master’s degree in education, both from the University of Georgia. Meghan’s first experience with autism was while working as a designer. That experience sparked an interest in working with children of all abilities, and her master’s thesis focused on engagement in the art classroom for children with autism. Meghan went on to earn her BCBA through the University of West Florida to more effectively serve families. Meghan has worked with children and adolescents in the home, coaching parents and caregivers using Applied Behavior Analysis since 2011. After noticing a huge need for transition services in Chattanooga, and the lack of support for families once they leave the high school setting, Meghan began also seeing older clients and assisting in the leap from school to whatever came next. 

Anna Straussberger, M.A., BCBA, interest in the field began suddenly after reading a Newsweek article pointing to elevated incidence of Autism in children. Within two minutes, Anna diverted from her original plan to become a high school English teacher and started pursuing a career in working with individuals affected by an Autism Spectrum Disorder. Since 2008, Anna has used the principles of Applied Behavior Analysis to work in residential, home-based, school, and community settings to foster functional communication, social development, daily living skills, and prevocational readiness in adolescents and young adults with an ASD. Through her work, Anna formed an interest in helping these individuals and their families in transition gain the knowledge and skills to live independently, foster meaningful relationships, and interact with the community through employment or other fulfilling means. Through her work, Anna also developed an interest in helping support parents, siblings, and other caregivers who have a loved one with an ASD. With this aim in mind, Anna returned to school, and she received a MA in Mental Health Counseling and Behavioral Medicine from the Boston University School of Medicine in 2014. She then went on to earn her BCBA through the Florida Institute of Technology. Anna’s goal is to continue to help individuals with autism and their families develop the competencies to lead independent, healthy, and happy lives.

Elizabeth Thornburgh, M.Ed, is the Chattanooga Autism Center’s office manager. Elizabeth schedules patients, coordinates billing, verifies insurance, and follows up on claims and secondary insurance. Elizabeth graduated from the University of Southern Mississippi with a Master’s Degree in Education. She was an elementary grade teacher before moving to Chattanooga. Elizabeth is now a mother to two children on the Autism Spectrum, and can provide a wealth of knowledge in visual supports, education, and other resources related to Autism. She also coordinates sensory-friendly events under the Out ‘n’ Abouts Program.

Bailey is the clinic's  in-house pet who frequents the Autism Center when his owner, Alyce is present. Bailey loves to make new friends, greet old ones, and play catch! He's very friendly (and sometimes vocal). His main job is to encourage play, bring smiles to patients and guests, and greet all who walk in our center. He is an avid collector of tennis balls and loves to take walks. 

Lula is a laid back lady that enjoys chin scratches and playing fetch. Sometimes she prefers napping to play time, but always welcomes being found and woken from her slumber for a scratch and a treat. Lula helps in the ABA clinic to calm clients or motivate them to work for play time with her. Lula is often at the CAC when her mom, Meghan, is in the office.  


Forms for new AUTISM ASSESSMENT or cognitive behavior therapy clients:


Clinical Welcome Packet (Policies and other information). Download and keep for your records.


Assessment and Therapy Initial Intake Form: Print, complete, and bring to intake session.


Patient Information form: Print, complete, and bring to intake session.





Patient Information FormPrint, complete, and bring to intake session.


Clinical Intake FormPrint, complete, and bring to intake session.


TennCare Parent AgreementPrint, complete, and bring to intake session.


ABA Functional Analysis Consent FormPrint, complete, and bring to intake session.


ABA Notice of Privacy Practices


ABA Caregiver Handbook


Job Opportunties

Click here to download a job description for an ABA Clinic Behavior Technician.

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Chattanooga Autism Center

1400 McCallie Avenue, Suite 100

Chattanooga, TN 37404

(423) 531-6961 (option 2)

Fax: (423) 521-8094