About Us

Tumble N’ Dots is a private pediatric therapy practice located in Irvine CA.

Our brand new, fully equipped sensory gym along with separate fine motor and tactile room allows us to utilize a multitude of treatment modalities including sensory integration therapy, fine and gross motor therapy, handwriting programs, speech therapy, and feeding therapy.

We work with children of varying diagnoses, including autism, down syndrome, cerebral palsy, motor development delays, and sensory processing challenges. Our therapists specialize in evaluation and treatment using Ayres Sensory Integration® (ASI), a framework developed by A. Jean Ayres, Ph.D., OTR, FAOTA, an occupational therapist, psychologist, and neuroscientist. 


Our team

Avital Shuster, Pediatric Occupational Therapist

Avital Shuster

Pediatric Occupational Therapist / Owner

Avital is the founder and director of Tumble N’ Dots.

Shortly after graduating from the University of Southern California (USC) with a Bachelors and Masters degrees in Occupational Therapy, she began her work as a Pediatric Occupational Therapist at Irvine Unified School District.

Having completed post-graduate education and training in Ayers Sensory Integration and Feeding Therapy, Avital has been working with children since 2008 and has experience serving children with a variety of diagnosis in the clinic, home, school, telehealth, and community-based settings.

She specializes in using task analysis to develop goals and plans that support the child’s needs.

Avital believes in helping parents to focus on the strength and abilities of each child while incorporating behavior plans and strategies to foster success.

Avital is also the creator of OTPlan – an activity idea search engine for developmental activities

In her free time, Avital enjoys spending time with her husband, 3 young children, and her dog, going to the beach, hiking, and traveling.

Avital brings her love for children, understanding of parents struggling with a special needs child, and years of therapy experience to every session.

Miranda Orosco

Miranda Orosco

Pediatric Occupational Therapist

Miranda was born and raised in Orange County, and received her Bachelor’s degree in Child Development and Family Studies in 2018 from Cal State Long Beach. She is graduating this year with her Master of Science in Occupational Therapy from Cal State Dominguez Hills, and has always been passionate about working with children.

Her Occupational Therapy fieldwork experiences include a community mental health setting in Long Beach, an inpatient acute setting in Orange, a special education school in Buena Park, and another community setting with adolescents in Long Beach.

Throughout her time in her OT program, she had also conducted a 1.5-year long research project focusing on the experience of families affected by pediatric cancer.

Miranda has an extensive background in swimming, and has taught swim lessons to children for over 7 years, including Baby & Me classes with parents, and older children. She has experience working with children in groups, as well as one-on-one, and loves teaching new skills in the water. Her strengths include creativity, communication, improvising, and adapting.

In her free time, she enjoys music, movies, spending time outdoors, and quality time with family and friends.

Laura Petix

Pediatric Occupational Therapist

Laura is a pediatric Occupational Therapist who was born and raised in Southern California. She received her undergraduate degree in NeuroPsychology from the University of California, San Diego in 2010. She worked for the Psychology Department in the VA for several research studies focusing on bipolar disorder and schizophrenia in adults. Laura is a published author in 2 peer reviewed articles.
Laura got her Masters Degree from San Jose State University in Occupational Therapy. While there, Laura was the President of the Occupational Therapy Honors Society and did her research project on the effect of canine assisted therapy on Autistic children’s communication skills. She was hired at the pediatric clinic she did her internship at and remained there for 5 years.
Laura has taken advanced courses in: Feeding Therapy, Therapeutic Listening & Astronaut Training. Her therapeutic strengths include being able to build great connection with her clients, and getting creative with therapeutic activities.
Laura recently relocated back to Southern California and lives in Irvine with her husband, Mark and daughter, Liliana. Laura’s daughter has Sensory Processing Disorder and Anxiety, so Laura loves connecting with parents over the struggles and challenges of raising children with sensory needs. 
In her free time, Laura creates content for her online platforms where she shares bite-sized nuggets of educational information on sensory processing and other developmental skills in children.  It’s through her online presence that she realized how important parent education is to a child’s progress in therapy. She loves teaching parents and teachers the impact of sensory processing on learning and behavior in children. You can learn more from Laura on Instagram, @TheOTButterfly

Kelly Mason

Pediatric Occupational Therapist

Kelly is originally from Orange County but only recently moved back into the area. She is grateful to be living again near her beautiful hometown!

Kelly has always found joy and fulfillment working with young ones and their families; however, there was also a desire to develop an interest in being an advocate for human rights. This led her to receive a Bachelor’s degree in International Studies and French at California Lutheran University, in Thousand Oaks, CA. After spending some time studying and teaching English in France, Kelly decided to pursue her MS degree in Occupational Therapy at A.T. Still University in Phoenix, AZ, so that she could become skilled in an area where she could use her interests and strengths in the fields of science and psychology.

Working with clients 1:1 has been extremely rewarding and Kelly feels honored to help families by sharing the tools she has learned through OT, specializing in sensory integration and feeding. Kelly’s mission is to help children and families learn the strategies to improve self-regulation so they can become more fully engaged in their surroundings and experience life to its fullest. Finding self-healing from personal health challenges in mindfulness, movement, and whole-food nourishment, Kelly is passionate about incorporating related evidence-based techniques into her therapy sessions. Recent certifications include Beckman Oral Motor and Sequential Oral Sensory (SOS) Approach to Feeding. Kelly has most enjoyed serving the pediatric population in SI clinics, schools (Pre-K & Elementary), and home health and hopes to have the opportunity to continue expanding her contribution at a broader community level, at home and abroad, in the near future.

In her free time, Kelly enjoys plant-based cooking, Latin dance, barre, yoga & meditation, travel, time near the ocean and most importantly, spending quality time with her close friends and family.

Amanda Harpst SLP

Amanda Harpst / Aspire for Autism

Speech Pathologist

Amanda is the founder of Aspire for Autism. Amanda is a mother of three and speech pathologist. She graduated from Cal Poly with a BA in English and from Cal State Northridge, with a Masters in Speech Language Pathology. She has years of experience with children of all ages, starting with tutoring in her younger years, to her more recent experience as a speech-language pathologist, and especially as a mother. She has been in the speech therapy field since 2002, with a range of experience in school programs, private clinics, home-health, and hospital/medical facilities. What she loves most is providing opportunities for parent-involvement in their child’s therapy planning and progress, and parent coaching for greater success. Amanda’s previous therapy experience has given her the opportunity to work with and learn from teachers, occupational therapists and other related professionals. She’s learned a lot about the benefits of adding movement and sensory techniques to provide a functional, productive learning environment for each child. With advanced training in the Lindamood-Bell learning programs, she brings reading, comprehension, memory and visualization techniques into therapy sessions. Her advanced training in Stanley Greenspan’s DIR/Floortime model has taught her the importance of building strong relationships in a developmentally appropriate, child-led, play-based and relationship-rich environment. Most recently, Amanda has created a parent training program using the philosophy and proven success of DIR, called C.A.R.E. for Parents, which walks parents through the process of understanding their child’s strengths and learning style to be able to connect and communicate meaningfully. The combination of these programs among others, has allowed her to create a comfortable, natural setting for the children, where they and their families can thrive. In her free time, Amanda enjoys going for walks, hikes and jogs; spending time in nature with her 3 kids, and painting, jewelry-making and anything else crafty. Amana takes her personal experience of being in speech therapy as a child, along with her own parenting joys, to create a nurturing learning environment for both the child and parents together.

Christina Johnson / Aspire for Autism

Speech Pathologist

Christina Johnson has been a licensed and ASHA certified speech-language pathologist for 23 years.

She has joined Aspire for Autism after serving a largely pediatric clientele in her own private practice for the last 2 decades. Christina is a mother of 3 kids and is an avid runner and cyclist.

Christina earned her Master’s Degree in Communicative Disorders from California State University, Fullerton in l997. She also holds a BA in Communicative Disorders from CSUF and BA in Social Ecology from UCI. She is credentialed with a Clinical Rehabilitative teaching certificate in the state of California.

Christina has worked in a multitude of settings, such as acute hospitals, skilled nursing facilities, public schools, early intervention agencies and private practice.

Her professional experience includes the assessment and treatment of children and young adults presenting with a variety of communicative disorders, including autism spectrum disorder, language
processing disorder, phonological/articulation disorders, fluency disorder, childhood apraxia of speech, myofunctional/tongue thrust.
Christina’s clinical vision is to provide a family centered approach to therapy through evidenced based intervention for her clients, and education for caregivers to ensure the successful achievement of goals.

In her free time she also enjoys water sports and traveling with her family.

Krystal Lopez

Office Manager

Krystal was born and raised in Santa Ana and received a Bachelor’s degree in Psychology & Social behavior from the University of California, Irvine. Through high school, college, and post college she has been involved in multiple environments that focused on helping kids mature and develop. 

She has worked as an ABA therapist under the Center for Autism & Related Disorders and worked with many students with learning disabilities and other special needs at the Santa Ana Unified School District. With her involvement in these organizations as well as her personal experience, she has found a passion and love in nurturing kids. She sees the values in helping every child receive and learn the necessary skills to succeed in life.

She joined Tumble N’ Dots after volunteering and is now working on receiving a Masters in Occupational Therapy.

During her free time she likes to watch movies and have game nights with her family. She enjoys spontaneous adventures and spending time with loved ones. 

Since we specialize in individual care, at each appointment we devote an hour of 1:1 attention. This gives us ample time to assess your child and devise a program to meet your child’s specific therapy goals. We pride ourselves on a collaborative approach and have a team of occupational therapists and speech and language pathologists. Although your child will work primarily with one therapist, at times we will co treat and collaborate so that additional insight and approaches can be integrated into your child’s care. 

We want you to know that we are always available between appointments via email or phone to answer any questions or concerns you may have.