About Us
Building bright futures for families
As parents of a medically complexed adult son on with autism, we have dedicated over two decades of our lives to helping him thrive and live his best life. Through our experiences, we discovered there was a need for a multi-disciplinary approach for this complexed population. IAT consists of a team of bright and caring professionals under one roof (including ABA Therapy, Occupational Therapy, Speech and Language Pathology, and Health Educators/Coaches) collaborating to provide the best possible outcome for our clients. We will do all we can to ensure those we serve are provided the best practices while they are under our care! Our goal is to ensure our client's and their families are treated with dignity and respect, feel heard and are empowered to take an active role in their child's progress.

OUR PHILOSOPHY
IAT's goal is to provide a diverse and well-rounded therapeutic approach to autism by providing the best practice encompassing Applied Behavioral Analysis (ABA), Occupational Therapy (OT), Speech Pathology and other evidence-based practices. At IAT, we like to dive a bit deeper in addressing the root cause of the issues that impact behavior, health, motor skills, and speech so that our clients can get the most out of these services. We have found 8 domains that impact autism and progress: 1) Family and home environment; 2) Neurophysiology; 3) Biochemistry; 4) Sensory motor; 5) Communication; 6) Cognition; 7) Behavior; and 8) Health -- including sleep, movement, nutrition, and screen time. Our goal is to provide our clients with quality services that address as many of these 8 domains as possible. The skilled IAT Team will integrate the many therapies used for ASD and collaborate when providing services for each of our clients instead of working as separate entities. Realization of the importance of all 8 domains and coordinating their efforts is how IAT came to be. We are proud to announce that we have a team of some of the best BCBAs, Occupational Therapy Professionals, Speech and Language Pathologists, and additional professionals involved in developing our client's programs. We carefully and meticulously select a team of like-minded and compassionate professionals to provide your loved ones with the best tools and services possible in order to be happy, successful and empowered.
Meet The Team

Mark & Barb Niederhauser
Owners/Founders
Mark and Barb founded IAT in 2017 after nearly two decades of trying to find the best services possible when their once healthy and social son regressed into severe autism around the age of 18 months. They wanted to provide the autism community with service options that they wished were available for their son. They also pride themselves in finding high quality, compassionate and like-minded professionals that look for each client’s unique qualities and strengths. At IAT, we believe that all clients and families should feel safe, heard and empowered when receiving therapy services. And that all families that IAT serves are to be treated with dignity and respect. Over the past 22 years, Mark and Barb learned that in their son’s case, as with many other individuals, there is much more to autism than meets the eye. Autism is considered by many a behavioral diagnosis. However, in most cases it is accompanied with additional diagnoses and challenges such as anxiety, ADHD, sensory processing disorder, speech delay, selective eating, sleep issues, and many medical co-morbidities that impact the immune system, and the central nervous system. Diagnostic overshadowing is a significant problem and can create a disservice for those with Autism. According to current research, among children with ASD: * over 70% have neuroinflammation * over 75% have hypoperfusion to the temporal lobes * over 80% have mitochondrial issues * over 59% have gut issues * We also know that environmental toxins—all play a role in the health of children affected by ASD. We can’t expect our kiddos to give our best when they are often feeling their worst. These are complex individuals, and an approach that works for one child may not work for another. Mark and Barb believe each client deserves to be viewed as an individual, and that it also takes a village of caring specialist and professionals to provide the best practice and service possible for this population.

Ruthann Gibbs
Executive Assistant
Ruthann enjoys getting to know staff and clients through serving as Executive Assistant at IAT. She is a life-long resident of Murray, Utah where she lives with her husband. They are the proud parents of three children and grandparents of 5. When she is not busy spending time with family, she enjoys reading, camping, and sewing. Ruthann is grateful for the opportunity to be a part of the IAT family.

Bailey Chipley
BCBA
Bailey is one of IAT’s Board Certified Behavior Analysts. She has over 12 years’ experience working in Applied Behavior Analysis. Bailey graduated with her Master of Science degree in Special Education with an emphasis in Applied Behavior Analysis from Montana State University. She has provided behavioral services in a variety of different states, including Hawaii, Montana, and Utah. She has practiced and supervised behavior analytic services in a variety of environments, including non-profit organizations, schools, residential homes, clinics, and home-based settings. She is very passionate about advocating for the health, happiness, and rights of children, adults, and families that have been impacted by special needs. Radical inclusion, kindness, and unconditional love are the main principles Bailey strives to live by. She loves spending time with her wife, family, friends, and three heelers. If she is not practicing ABA, you can find her on the slopes, in the mountains, playing basketball, traveling, spending time in Montana, or teasing her three younger siblings. She hopes to help families, like hers, who have been impacted by Autism Spectrum Disorder.

Marco Ortiz
BCBA
My name is Marco Ortiz and I am a Board Certified Behavior Analyst (BCBA) working at Integrated Autism Therapies (IAT) since 2021. I became a BCBA in 2018, but have been in the field of Applied Behavior Analysis (ABA) since 2015. I obtained a bachelor’s degree in Psychology from California State University Los Angels and a master’s degree in ABA from Arizona State University. I have had the opportunity to practice ABA in 3 different states (California, Arizona, and Utah) and with many families from a wide variety of cultural backgrounds. I am from Mexico and have been living in the US since 2006. My favorite sport is boxing and love training boxing as my workout. In regards to my career, I love observing the progress of the people I work with and creating a better future for them.

Brooke Shields
BCBA
Hello, my name is Brooke Shields. I am a Board Certified Behavior Analyst (BCBA.) I have 6 years of experience working in the field of Applied Behavior Analysis (ABA.) My experiance ranges from school, clinical, and residentail home settings. I graduated in 2016 from Utah Valley University with my bachelor’s degree in behavioral science, shortly after I began working as a registered behavior technician (RBT.) From the day I started as an RBT I fell in love with the field of ABA. I continued my education and obtained my master’s degree from Ball State University. I am a lifelong Utah resident and love the beauty of this amazing state. When I am not practicing ABA you can find me in the mountains camping, riding our RZR, skiing, or disc golfing and enjoying time outside with my husband, one year old son named JJ, and our 9 year old Australian shepherd Boomer.

Shantell Thueson
BCBA
Shantell first became an RBT in 2016 and has been working in the field of ABA ever since. She has worked in the home, clinic, and school settings including working as a high school life skills teacher. She graduated from Utah State University in 2019 with a Bachelor of Science degree in special education with an emphasis in severe disabilities and a minor in psychology and graduated with her Master of Arts degree in applied behavior analysis from Ball State University in July 2021. She has worked with kids and adults of all ages and is currently pursuing her BCBA certification and plans to sit for the exam in July. In her free time, she likes to bake and decorate cakes and spend time outside with her family.

Julia McMillan
SLP
Working with people of all ages is Julia's passion, and being a speech-language pathologist for 15 years has only increased that passion. She enjoys the challenge of working with children with autism and belives deeply in the power of communication, whether verbal or nonverbal. She graduated from both BYU and the University of Utah and continues to seek learning whenever possible. Julia loves audiobooks, chocolate and walks to the park with her family.

Nate Cantor
SLP
My name is Nate Cantor, I am one of the Speech-Language Pathologists here at IAT. I specialize in early intervention, early language learning, Gestalt language Processing/Natural Language Acquisition, Alternative and Augmentative Communication (AAC), Articulation therapy, and parent training approaches such as the Hanen Program. I take a whole-family and parent empowerment approach to my practice and absolutely love to watch children and families grow together. Children have so much potential, let's work together to help them learn and grow!"

Dr. Jessica "Jess" Littrell, OTD, OTR/L
Director of Occupational Therapy
Dr. Jess earned her Bachelor’s Degree in Psychology from Indiana University Kokomo. She then went on to attain her doctoral degree in Occupational Therapy from Indiana Wesleyan University.Throughout her undergraduate and graduate education Dr. Jess gained clinical skills working in settings such as skilled nursing facilities, pediatric outpatient clinics, orthopedic clinics, and rural Alaskan settings. Dr. Jess has experience working with a mulitude of diagnoses including Autism, Cerebral Palsy, Down Syndrome, Developmental Delay, and Sensory Processing Disorder. Dr. Jess treats individuals of all ages with the primary goal of improving the overall quality of life. Extensive training and experience allows Dr. Jess to specalize in Sensory Integration, Reflex Integration, Therapeutic Listening, Behavioral Interventions, and Feeding therapy. Outside of work, Dr. Jess enjoys being outdoor with her family.

Destiny Robles
Occupational Therapist
Destiny Robles is an Occupational Therapist at IAT. She has a master's degree in occupational therapy from the University of Utah. After graduation, she returned to her childhood neighborhood, West Valley City, to work in early intervention. She has a multitude of clinical skills in coaching, feeding, sensory, motor, and behavior. She is very passionate about learning and supporting others to learn. In her free time, she is exploring the outdoors with her husband and two children, learning new recipes, or caring for her indoor plants.
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Landon Stewart
COTA
My name is Landon Stewart I have a bachelor’s degree in exercise science from Utah Valley University and then went on to get my associates in occupational therapy assisting from Ameritech College of Healthcare. I’ve been licensed and working as an occupational therapy assistant for almost three years now, the majority of that time being spent at IAT but I’ve also worked in skilled nursing facilities and in school districts as well. I have additional certifications in hand writing and adaptive equipment as well on top of my professional license. I’ve also worked as an RBT for about 4 years and this has helped immensely for me personally when integrating across disciplines as I have familiarity in both the fields of ABA therapy and occupational therapy. I’ve been married for about two years now and my wife has twin 14 year old brothers who are both diagnosed with ASD and I feel this has also helped me get a better idea of how life can be at home for the kids we work with as well as their families which I feel has also helped improve my overall approach as an occupational therapy practitioner. I absolutely love working with these special kids and their families to help improve their quality of life and for them to become as independent as possible!

Ali Niederhauser
Clinic Coordinator/Scheduling/ COTA
Ali Niederhauser grew up in Murray Utah and is a graduate of Murray High School and Southern Utah University receiving a bachelor’s degree in Exercise Science. She recently graduated from Joyce University receiving her Certified Occupational Therapy Assistant degree. Ali has experience as a CNA, support in a group home, and a camp counselor for kids with special needs. Ali grew up with her parents and her younger brother Devon, who was diagnosed with Autism when he was 2 years old. Being two years older, she attended many of his appointments, and loved going to occupational therapy with him. This is where she determined she wanted to grow up to be an Occupational Therapist. Ali has been working for Integrated Autism Therapies for 3 years and is currently the clinic coordinator. She is looking forward to starting to work with clients doing Occupational Therapy. She loves working with the kids and seeing the progress they have made. Ali has 3 dogs, Milo, Ginger, and Indy. Ali loves dinosaurs, Star Wars, pirates and Halloween. Ali enjoys reading, drawing and painting. She also likes going for rides and spending time outdoors (when the weather is nice) as much as possible. Her favorite vacation destination is Hawaii, and she hopes to return someday soon.

Lisa Smith
Scheduling, AM Clinic Manager
Lisa is from Taylorsville UT where she lives with her husband, Jason and their pet bunny, Hershey. They are the parents of two daughters, Nicole and Addy. Lisa directs the Murray Community Dance Program and has been teaching children for over 30 years. Tap is her favorite style of dance, and she loves sharing the dance floor with her many students as they learn together. She with her husband currently serve as the chairs of Forever Bound Adoption, having been adoption advocates since their daughters were young. Lisa enjoys being with her family, Disneyland, Sunday night board games, chalk art, softball, children’s literature and Christmas. She loves working at IAT and interacting with the kids, parents and staff. Lisa loves to laugh and you can often find her spending time playing with the kids in the clinic when she takes a break.

Barb
Founder & Health, Fitness & Functional Medicine Certified Health Coach
Barb is from SLC UT and received her Bachelor of Science in Public Health and shortly after graduation received her credentials as a Certified Health Education Specialist (CHES), Certified Group Fitness Instructor, Certified Personal Trainer and additional fitness certifications (Spinning, Kick Boxing, Mat Science, Stretching, and more). She was in the process of pursuing her masters in nutrition and running her fitness business when her second child regressed into severe autism and developed several other disorders and co-morbidities seemingly overnight. Some of her son’s additional diagnoses include PANDAS/PANS, autoimmune encephalopathy, Epstein bar syndrome, and mitochondrial disorder. Her son’s regression and additional diagnoses changed her path of study and her passion. After over 20 years of visiting a variety of specialists, medical testing, genetic testing, autism research, and seeking every credible therapy treatment option available for her son, Barb found a new passion for biomedical research, functional nutrition, functional and integrative medicine, and behavior change. Barb is a member of the Bioindivdual Nutrition Institute and has successfully completed their Foundations Courses. She is currently finishing up her studies with the Integrative and Functional Nutrition Academy (IFN) and is working towards receiving her Integrative and Functional Nutrition Certified Practitioner Credential (IFNCP) by the end of the year. Additional she currently holds the following certifications; certified Health & Behavior Change Specialist, Functional Medicine Certified Health Coach (FMCHC), ACE Certified Health Coach, Mandt Certified Trainer, and Advanced Brain Technologies The Listening Program (TLP). Barb is a firm believer that a child’s nutrition and environment play a major role in overall health, behavior outcomes, and quality of life. As a parent and full-time caregiver of a medically complex child, Barb has seen the significant impact diet, lifestyle, quality therapy services with caring providers can make in a child’s life. She uses her motivational interviewing skills, education, and experience as a special needs parent to work with other families and meet parents where they are on their journey. She is a firm believer that parents/caregivers are the experts on their own child and should have a say and buy-in for their child’s therapy program to ensure the best outcome possible for the child. Barb enjoys exercise, sunny days, and spending time with her family (and 3 dogs). She loves all holidays, but her favorite is Halloween. If she has any free or quiet time, she typically can be found studying, doing research, or working on a project for IAT.

Sophia Grettenberger
Senior Lead RBT
Sophia grew up in Santaquin, UT as one of 12 siblings. After getting her bachelor’s degree in psychology from Southern Utah University, Sophia discovered the field of ABA therapy and became an RBT in 2018. She loves working with her clients and considers herself lucky to be a part of their lives. Sophia strongly believes in forming connections with each child and adult she works with in order to make a meaningful impact on their lives, advocate for them, and celebrate their individuality. Sophia plans to pursue a master’s degree in Speech Language Pathology at the University of Utah. In her free time, Sophia enjoys spending time with her loved ones, being outdoors, and finding new ways to learn and relax.

Jade Johnson
Lead RBT
Jade was born and raised in Utah as the middle child and only girl. She has taken training courses to be a doula in Utah and wants to pursue education in childbirth. Jade has been in the childcare field since the age of 18 and she was a preschool teacher for three years for children ages 3 to 5. She joined the ABA field in 2019 and became a team member at IAT in 2021. The best part about being an RBT for her is watching her clients grow and hit milestones. She loves the connection she makes with each of her clients and their families and is a strong advocate for both when needed. When Jade isn't working she enjoys hiking, spending time in nature, and exploring different parts of her favorite state, Utah.

Marlie Gardner
Lead RBT
Marlie graduated high school in 2015. Immediately after high school she joined the Army Reserves as a 25U (signal system support specialist). Marlie spent 8 years in the reserves. When she came home from training, she started working in respite care for families with kids and adults with special needs. A few of the kids she worked with received ABA therapy. Marlie became interested in the field and looked for a company to start working for and get her RBT. She received her RBT in December of 2017. Marlie adores all the kids she’s worked with and looks forward to work each day. Marlie is married and has twin boys. In her free time, she enjoys taking her boys to the park, museums, and the zoo. She also enjoys reading to her kids. She is a Halloween enthusiast and always has costumes planned at least a year in advance.
What People Are Saying
I am thrilled with the amount of thought and care my son's BCBA and SLP puts into developing his programs. These professionals complement each other and also work well with us as parents. Their parent training and educational information they have provided us has been invaluable and helpful for our entire family. He adores his RBTs, and they are so thoughtful, understanding, and professional with him. I love seeing how he interacts with his entire IAT team.
- BJ