Julia Linden (she/her)

Co-Founder 

M.Ed., BCBA, LBA

Board Certified Behavior Analyst

David Garder (he/him)

Co-Founder

M.S., CCC-SLP, M.Ed., BCBA, LBA

Speech Language Pathologist and Board Certified Behavior Analyst

David's love of language inspired him to earn a B.A. in linguistics from SUNY, Albany in 2003. During his undergraduate studies, he became familiar with different theoretical frameworks that examine the universal structure of language. He wanted to apply this knowledge in a practical and meaningful way, so he gravitated to the field of Speech Language Pathology. In 2009 he earned an M.S. in Communicative Sciences and Disorders from California State University East Bay and has been treating children with speech and language disorders since. In 2018, David earned an M.Ed. in Applied Behavior Analysis from Arizona State University.

David specializes in helping young children with autism who have Apraxia of Speech learn to start making sounds and use words to get their wants and needs met. David combines principles of Linguistics, Speech Therapy, and Applied Behavior Analysis to help address speech needs in young children with autism.

When David is not working with kids, he enjoys fly fishing, white water kayaking and hiking.

Amy Tondreau (she/her)

Clinical Director

M.S., BCBA, LBA

Board Certified Behavior Analyst

Amy earned her BA in Psychology and Philosophy from the University of California, Santa Barbara, in 2010. After graduating, she began working as a behavior technician and found a passion for supporting individuals in developing language, social and self-advocacy skills. In 2015 she moved to Oregon and her love for the science of behavior prompted her to earn her Masters of Arts in Professional Behavior Analysis at the Florida Institute of Technology.

Over the years, Amy has gained experience across a variety of settings and clients. She prefers working in early intervention and supporting clients and their families in building foundational skills that support communication using verbal behavior, social skills and promoting community access. In addition to supporting clients, Amy enjoys supporting staff skill development and providing mentorship. In her spare time, Amy loves exploring the outdoors, all things true crime, and perfecting her chocolate chip cookie recipe.

Francesca Raimondo (she/her)

Clinical Supervisor

M.A., BCBA, LBA

Board Certified Behavior Analyst

Cessa has always been passionate about empowering children to reach their full potential and making a positive impact in their lives. She graduated from the University of Oregon in 2022 with a B.S. in psychology and a minor in disability studies. Her love for working with children has developed over her years through nannying, supporting the growth of children at Relief Nursery, and volunteering in schools to promote social inclusivity. After graduation, Cessa jumped straight into working in the ABA field and has not looked back. She has loved witnessing the progress and achievements of children and is excited to move forward by pursuing a master’s degree in ABA or a related field soon. 

In her free time, Cessa enjoys exploring new restaurants around Portland, being active outdoors, and spending quality time with friends and family.

Hannah Waardenburg (she/her)

Clinical Supervisor

M.A., BCBA, LBA

Board Certified Behavior Analyst

Hannah holds a master’s degree in education with a focus on special education and applied behavior analysis from Portland State University. She gained hands-on experience as a licensed assistant behavior analyst while completing her required clinical hours, becoming a board certified behavior analyst (BCBA) and licensed behavior analyst (LBA) in 2025. She has over six years of experience supporting children across various settings, including clinics, homes, and preschools in the Portland metropolitan area. 

Hannah values a person-centered approach and believes that meaningful progress is built through individualized, evidence-based interventions tailored to a learner’s strengths and needs. She works collaboratively with families and other providers to develop practical strategies that promote skill development, independence, and overall quality of life. 

In her spare time, you will find her relaxing with family, attending concerts, and traveling. 

Maria Camila Hernandez Betancur (she/her)

B.S., RBAI

Clinical Fellow

Maria Camila is from a little town in Colombia where she used to live with her mother and younger brother. She has always enjoyed playing with kids and soon realized she wanted to work with children as a career.  In 2019 she received a Bachelor of Science in Psychology in Colombia. In 2021 Maria moved to the United States through an interexchange program and lived in Colorado with a host family.  She was a caretaker to their daughter and was able to learn many new skills when joining in for therapy appointments. She has experience working with individuals with autism, cerebral palsy, and epilepsy. She is eager to continue in the field of ABA and is interested in pursuing a career as a BCBA, SLP, or OT. 

Maria loves traveling – in her free time she is always thinking about her next adventure! She enjoys watching movies, dancing, and trying new foods.

Jaeda Doctolero

B.S., RBAI

Clinical Fellow

Jaeda was born and raised in Honolulu, Hawaii before moving to Oregon to attend Linfield University. In 2025, she earned her B.S. in Biology along with minors in neuroscience and psychology. During summer breaks, Jaeda worked as a soccer coach for kids, and it was during this time that she started to develop a passion for working with kids. After graduation, Jaeda began working in the field of ABA, where she found a career that combined her love of science with her passion for helping children succeed. Jaeda is currently pursuing a master’s degree in ABA and hopes to become a BCBA.

In her free time, Jaeda enjoys playing soccer, reading, crafting, and spending time with family and friends.

Kumulani Kaai (she/her)

B.S., RBAI, SHRM-CP

Director of Human Resources

For as long as she can remember, Kumulani has always been fascinated by human behavior. Her love for working with children came from growing up in a large family and always being surrounded by the younger generation. In 2020, She earned her B.A. in Communication Studies along with a minor in Sociology as well as a certificate in Educational Studies, from the University of Hawaii at Hilo. she has had the opportunity to work with elementary, middle, and high school students in the Special Education department at local public schools in Hawaii. After graduating, Kumu moved to Oregon with plans to continue her education in Applied Behavior Analysis. Prior to working for Lindegard Therapy, Kumu gained previous experience providing home-based ABA throughout the Portland metro area.

In her spare time, Kumu loves watching new movies, spending time with loved ones and being as close to the ocean as possible!

Bruna Alves (she/her)

B.S., RBAI

Behavior Interventionist

Originally from São Paulo, Brazil, Bruna earned a degree in Education before moving to the United States in 2022 through the Au Pair cultural exchange program. Her passion for supporting children’s learning and development led her to pursue a career working with individuals and families.

Bruna enjoys helping her clients build confidence, develop new skills, and reach their goals. She is committed to creating positive and meaningful experiences that support growth and independence.

In her free time, Bruna enjoys traveling, exploring new hobbies, crocheting, working with air-dry clay, reading, and watching movies.

Marina Blair (she/her)

B.A., RBAI

Behavior Interventionist

Marina has always been interested in working with kids. She discovered her passion while growing up and helping her dad teach English to Japanese kids. In 2023, she graduated from the University in Japan with a Bachelor of Arts, majoring in international communications. Upon graduation, she moved to the United States.

In her free time, she enjoys playing piano, going to concerts, going to the art gallery, and spending quality time with family and friends.

Daniel Blessinger (he/him)

B.S., RBAI

Behavior Interventionist

Daniel graduated from Oregon Institute of Technology in 2021 with a degree in psychology, where his path towards a career as a therapist began. Daniel was a valuable member of the men’s soccer team in college, where he honed his leadership skills and developed a strong work ethic through teamwork.

It was during his time at college that Daniel discovered his calling for working with children on the autism spectrum. He spent time as a shadow at a behavioral clinic, where he witnessed firsthand the positive impacts that therapy can have on individuals and their families.

Daniel’s commitment to his work is matched only by his commitment to his hobbies. In his free time, he can often be found playing soccer with friends, honing his chess skills, or even playing violin for his own enjoyment. His dedication to all of these pursuits is a testament to his disciplined personality and his willingness to consistently improve his skills.

Cat Brackenbury (they/them)

B.S., RBAI

Behavior Interventionist

Cat first got into childcare in middle school when they babysat the young neighborhood kids. They went on to attend Western Michigan University, getting a double major in psychology and computer science. It was in college that they first worked in ABA for autism treatment. As a person diagnosed with ASD themselves, autistic children have a special place in their heart. Cat likes to bring a balance of personal care and scientific approaches to the ABA process. They hope to go on to get a masters degree in clinical psychology, so that they can continue to provide help to those who need it most.

In their free time, Cat likes to oil paint, go hiking, and play videogames.

Maria Cerón (she/her)

B.S., RBAI

Behavior Interventionist

Maria is passionate about helping children grow, learn, and reach meaningful goals. She finds great joy in celebrating each child’s progress and believes that every achievement, big or small, deserves to be recognized and celebrated.

Known for her warm, energetic, and caring personality, Maria strives to create positive connections with the children and families she works with. She is dedicated to providing compassionate support and feels honored to be part of each child’s journey as they develop new skills, build confidence, and achieve their goals.

Outside of her professional role, Maria has a passion for music and enjoys singing whenever she has the opportunity. She loves staying active through sports and exercise, and swimming is one of her favorite activities. Maria is also a devoted animal lover and enjoys spending time with her cat and other animals.

Claire Champommier (she/her)

B.A., RBAI

Behavior Interventionist

Claire has been interested in human behavior for as long as she can remember. In 2023, Claire graduated with a Bachelor of Arts in psychology and a minor in English from Lewis & Clark, where she discovered an interest in studying child psychology and autism. Claire also has a passion for writing poetry and has recently published her work in literary magazines and anthologies, most recently alongside the Poet Laureate of New Mexico. She worked as a teacher before joining Lindegard and is now interested in pursuing a career path in speech pathology or applied behavior analysis. Claire feels fortunate to have found a place with Lindegard alongside
a wonderful team.

In her free time, she enjoys collaging, hanging with friends, doting on her cat, and writing poetry.

Raymond Chen (he/him)

B.S., RBAI

Behavior Interventionist 

Raymond obtained his Bachelor’s degree from University of Oregon where he majored in psychology with an emphasis in child development and a minor in computer science. Prior to joining Lindegard Therapy he worked as a Behavior Technician in homes for a company in Portland, Oregon where he discovered his interest and passion in working with children with ASD. 

Raymond was recently accepted into the ABA Masters program at SE Missouri State University.

In his off time, Raymond enjoys working out, traveling, and trying out new foods.

Alaina Erland (she/her)

RBAI

Behavior Interventionist 

Alaina is a born and raised Oregonian who has always loved working with kids. Her interest started when volunteering for PlayFitFun as a summer camp activities coach at different elementary schools in the Beaverton area. Her volunteering continued in other settings such as coaching elementary school girls basketball and outdoor school counseling. Alaina became a Northwest Outdoor School Counselor teaching middle school students about Oregon wildlife through engaging in different outdoor activities and experiments. Working with a variety of different individuals allowed Alaina to spend more time with special needs children; This exposure peeked her interest in working with special needs more in depth. In early 2022, Alaina became a RBAI and has devoted her time to working in ABA therapy ever since. 

In her free time, you may find Alaina in a yoga class, at a McMenamins concert or skiing on Mt. Hood!

Alex Frazier

B.S., RBAI

Behavior Interventionist

Mckenzie Gilberts (she/her)

B.S., RBAI

Behavior Interventionist

McKenzie graduated from Oregon State University with a BS in Human Development and Family Sciences. It was there, that she connected with a passion for learning how to contribute to the welfare of communities through human services. Her background includes working as an in-home caregiver for individuals living with developmental diversities. It is her joy to empower others and to see her clients flourish and thrive in their daily lives. She finds ABA therapy deeply inspiring because it presents the opportunity to support children with ASD in developing their own voice, building confidence in their abilities, and acquiring social and educational skills for
their future.

In her free time, she enjoys live music, movies, art, being outdoors, reading, taking her Boston
Terrier to the dog park, and spending time with loved ones.

Irene Hilman (she/her)

B.S., RBAI

Behavior Interventionist

​Irene graduated from Lewis & Clark College in 2025 with a degree in psychology and a minor in gender studies. With a passion for research, she spent much of her college career in research labs investigating the transformative power of play. She has spent the last decade working with kids in various capacities, and loves bridging her academic background with hands-on care in the clinic.

Grant Jumamil (he/him)

B.A., RBAI

Behavior Interventionist

Grant received a Bachelor of Arts in Marketing while also studying Chinese at Portland State University. He originally had intentions of going into international business, but changed course in order to help his local community. Grant has worked in various positions helping teens and kids diagnosed with autism for the past 10 years.

In his free time, Grant collects vinyl and mixes music. He is also a competitive yo-yo player who has medaled in regional contests. 

Morgan McBride (she/her)

B.A., RBAI

Behavior Interventionist

Morgan developed her love for psychology and understanding human behavior as a teenager living in Switzerland where she quickly learned to navigate living with and experiencing diverse cultures. She started the pursuit of her degree in Social Work at Pacific University before transferring to San Francisco State University where she earned her Bachelor of Arts in Psychology in 2022. It was during this time that she started to develop a passion for working with kids and decided she wanted to aid in the development of young minds. She discovered ABA while searching for career opportunities in her field and decided that it would be a great fit. 

In her free time, Morgan enjoys reading, listening to music, concerts, movies, traveling, being outside, playing/cuddling with her orange tabby and being with friends and family!

Caleb McMahan (he/him)

B.S., RBAI

Behavior Interventionist

Caleb graduated from Washington State University in 2025 with a Bachelor of Science in Psychology. During his time in college, he worked as both a research assistant and a peer mentor, experiences that deepened his interest in understanding behavior and supporting others. After graduation, Caleb began working in the field of ABA to gain valuable hands-on experience before pursuing graduate school. He finds ABA work to be deeply rewarding and appreciates the insight it provides into Autism Spectrum Disorder and child development.

Outside of work, Caleb enjoys playing golf and volleyball, and spending quality time with his friends and family.

Claire Miculian (she/her)

B.S., RBAI

Behavior Interventionist

Claire graduated UC Santa Cruz with a Bachelors in Environmental Studies amid the COVID pandemic. The state of the world turned her interest towards psychology and she moved to Portland, OR in 2022. Claire is looking to become a therapist and get her LMFT to help people navigate the world and its hardships. 

In her free time, she enjoys spending time with her dog, thrifting vintage handbags, and crocheting fun accessories. 

Lex Ophiuchus (they/them)

MFA, RBAI

Behavior Interventionist

Lex graduated from University of North Carolina Wilmington with a BFA in English and Creative Writing before receiving their MFA at Portland State University. After working for various publications, they changed course and discovered a love for teaching and ABA therapy.

In their free time, Lex loves reading comics, playing board games, and making art.

Juniper Peterson (they/them)

B.A., RBAI

Behavior Interventionist

Juniper discovered their love of making kids smile at an early age working as a clown for the Ringling Brothers Circus. After graduating with a degree in English and anthropology from the University of Northern Colorado, Juniper briefly worked as a wilderness guide and outdoor educator before discovering ABA and moving to Oregon.

In their spare time, you can find them practicing violin, crocheting, or helping out with puppet shows.

Haile Peveto (she/her) 

B.A., RBAI

Behavior Interventionist

Haile graduated from Western Washington University in 2021 with a Bachelor of Arts in Elementary and Special Education. While studying, Haile worked with adults with developmental disabilities as a direct support professional. After graduating, she took some time away from education and worked on a cruise ship as a deckhand in the San Juan Islands. Upon moving back to Portland, Haile worked with an environmental nonprofit as the Youth Advocacy Coordinator to empower youth to participate in local legislation. This year, she started working with Lindegard, providing ABA therapy in the clinic. She loves supporting the creativity and growth of students at this age. 

In her spare time, Haile enjoys being by a river, discovering new food around Portland or working on a puzzle for weeks straight.

Jillian Zarbatany (she/her) 

B.S., RBAI

Behavior Interventionist

Jill was born and raised on the coast of Southern California before moving to Oregon to attend Western Oregon University, where she pursued her passion for helping others by majoring in Psychology. Throughout her college years, she worked closely with adults with developmental disabilities, gaining valuable experience and deepening her commitment to supporting individuals in reaching their goals. She graduated with a Bachelor of Science in Psychology in 2025 and soon joined Lindegard, where she continues her dedication to empower and support her clients.  

Outside of work, Jill enjoys crafting, exploring the outdoors, and spending quality time with family and friends.