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About Ascent Speech Therapy

 

Who We Are

Ascent Speech Therapy is a professional child development and behavioral support center in Markham, Ontario. Committed to a client-centered approach, we provide personalized therapy that empowers children with Autism Spectrum Disorder (ASD), speech and language delays, and diverse developmental needs to reach their full potential.


Led by a collaborative multidisciplinary team of Speech-Language Pathologists (SLPs), Registered Behavior Analysts (RBAs/BCBAs), Occupational Therapists (OTs), Ontario Certified Teachers (OCTs), and Early Childhood Educators (ECEs), we design individualized programs that support communication, social, behavioral, academic, and daily living skills.


Through evidence-based practices and strong partnerships with families, we help children develop the confidence, independence, and skills needed to thrive at home, at school, and in their communities.

Our Mission

Ascent, Shine, Transform.

To create a warm and supportive environment where every child can ascend, shine, and transform. Through compassionate, evidence-based care, we empower children to build confidence, develop meaningful skills, overcome challenges, achieve greater independence, and reach their fullest potential.

Our Vision

To create a community built on a more compassionate and scientific future, ensuring that every individual we serve gains the rights, abilities, and opportunities to integrate into society and pursue lifelong happiness

Our Values

Our daily practice and philosophy are anchored by our guiding motto: Children’s Needs First. Safety Always. Every Step with Ascent-itude.

  • Empowering Voices
    Helping every child communicate with confidence.
  • Honoring Uniqueness
    Respecting every child's unique strengths, needs, and potential.
  • Holistic Growth
    Supporting growth, independence, and lifelong success.
  • Partnership & Community
    Working together with families every step of the way.

What We Do - Our Services

We provide specialized, evidence-based therapy for children and youth (ages 0–18) in Markham.

  • Speech & Language Therapy: Enhancing speech sound production, language comprehension, expression, fluency, and social communication.
  • Behavioral Intervention (ABA): Individualized programs designed by BCBAs to reduce challenging behaviors and promote positive skill development.
  • Occupational Therapy (OT): Developing motor skills, sensory processing capabilities, and independence in daily activities and school tasks.
  • Self-Regulation Management: Equipping children with strategies to manage emotions and behaviors for better engagement in daily life.
  • Parent Coaching & Consultation: Empowering families with professional guidance and actionable tools to support your child's journey at home.

Our Approach

At Ascent Speech Therapy, we look at the whole child. We believe that true progress happens when clinical expertise meets compassionate, collaborative care. Our philosophy is built on four core pillars:

  • Family Involvement: We believe in extending support beyond the clinic. We work closely with families, offering guidance and resources to implement therapeutic strategies into daily routines, ensuring consistent progress and a holistic approach to your child's development.
  • Child-Centered: Every child is unique. We meet children where they are, using their strengths and interests to make therapy engaging, motivating, and fun.
  • Evidence-Based: Our interventions are grounded in the latest scientific research and proven clinical methodologies, ensuring the highest quality of care. By utilizing data-driven progress tracking, we objectively monitor your child’s growth to continually refine our approach.
  • Individualized Approach: There is no one-size-fits-all solution. We focus on clear, collaborative goal setting to design customized assessment and treatment plans tailored to your child’s specific developmental goals.
  • Play-Based & Naturalistic Approach: We believe children learn best when they are having fun. By embedding evidence-based therapy into playful, natural activities, we keep children motivated and engaged, making it easier for them to naturally transfer their new skills to the real world.
  • Multidisciplinary Collaboration: True growth requires a community of experts. Our team combines the diverse expertise of SLPs, BCBAs/RBAs, OTs, Psychotherapists, ECEs, and OCTs working collaboratively under one roof to deliver seamless, comprehensive care that supports your child's unique needs.

Our Team

Our Behavioral Team

Sylvia Tse, BCBA Clinical Supervisor, M.ED., R.B.A. (ONT.)

Sylvia Tse, BCBA Clinical Supervisor, M.ED., R.B.A. (ONT.)

Sylvia Tse, BCBA Clinical Supervisor, M.ED., R.B.A. (ONT.)

Sylvia is a BCBA Clinical Supervisor that has been board certified since October 2020 and is an OAP provider since June 2023. She works with neurodivergent and neurotypical children and adults, as well as individuals with developmental disabilities. Sylvia uses a trauma-assumed approach in her applied behaviour analytic treatments and is passionate in creating a positive learning experience for her clients. She is trained in function-based intervention, Practical Functional Assessment and Skill-Based Treatment, Precision Teaching, TAG Teach, and Natural Environment Teaching. Sylvia completed her Masters in Education in Developmental Psychology and Education from The Ontario Institute for Studies in Education of the University of Toronto.

In her free time Sylvia is a novice sewer and thrifting-enthusiast. She is also well-informed of the newest bakeries in the GTA that offer the most delicious pastries.

Panny Lau, MSc, RBA (ONT.), BCBA

Sylvia Tse, BCBA Clinical Supervisor, M.ED., R.B.A. (ONT.)

Sylvia Tse, BCBA Clinical Supervisor, M.ED., R.B.A. (ONT.)

Panny is a Board Certified Behavior Analyst® and a Registered Behavior Analyst in Ontario with a strong academic foundation in Applied Behavior Analysis (ABA). She holds a Bachelor of Social Science in Psychology and a Master of Science in Applied Behavior Analysis, equipping her with expertise in behavior assessment, intervention planning, and caregiver training.


With over eight years of hands-on experience, Panny has worked across homes, schools, clinics, and community programs, supporting individuals of all ages with autism and developmental disabilities. She is skilled in various evidence-based teaching methodologies, including Discrete Trial Training, Natural Environment Teaching, Precision teaching and Direct Instruction, and is proficient in assessment tools such as ABLLS-R, VB-MAPP, PEAK, and AFLS. Panny’s approach is rooted in compassion, adaptability, and collaboration, ensuring that each intervention is tailored to meet the unique needs of her clients and their families. She is committed to empowering individuals by fostering independence and meaningful skill development.

Lyka A. M., Supervised Senior Therapist

Sylvia Tse, BCBA Clinical Supervisor, M.ED., R.B.A. (ONT.)

Sabah Baalbaki, Supervised Instructor Therapist

Lyka has 5 years of experience working as a senior therapist for exceptional individuals with developmental disabilities. She worked with youth and adults on the spectrum 1 on 1 in centers, clinics, group homes and in home settings. She is a Registered Behaviour Therapist and holds certificates from CPI(Nonviolent Crisis Intervention) and University of California (Early Start Denver Model Practitioner). She is dedicated and compassionate about working with children implementing client specific ABA programming and supporting instructor therapists with assessments and reports. She has also been supervising social group and adult day programs to reach their individual goals. 

Sabah Baalbaki, Supervised Instructor Therapist

Sabah Baalbaki, Supervised Instructor Therapist

Sabah Baalbaki, Supervised Instructor Therapist

With a Bachelor's degree in Psychology, Sabah possesses a deep understanding of human behavior and cognition. Her academic journey is equipped with valuable insights into the mind, fostering a keen interest in exploring the complexity to apply their psychological expertise with empathy and analytical prowess. A compassionate individual dedicated to making a positive impact on the lives of autistic children. Sabah is a  Registered Behavior Technician . For the past two years ,  Sabah has served as a Behavior Therapist , fostering growth and development in kids on the autism spectrum. Through patient and caring interactions, Sobhia strives to help these children express their needs and achieve greater independence, celebrating each milestone in their unique journey. 

Sydney Wu, Supervised Instructor Therapist

Sabah Baalbaki, Supervised Instructor Therapist

Wanika Chang, Supervised Instruction Therapist

Sydney has passion for working with learners with special needs, specifically autism spectrum disorder, to help them reach different goals which promote their independence. She has experience working with children aged 4-17 with multiple diagnoses in the school and clinical setting using the principles of Applied Behaviour Analysis. Sydney has received CPI (Nonviolent Crime Intervention) and holds a discrete trial training certification(DTT). She is eager to continue her journey in the field of ABA as she continues her academic journey to build upon her knowledge. 

Wanika Chang, Supervised Instruction Therapist

Sabah Baalbaki, Supervised Instructor Therapist

Wanika Chang, Supervised Instruction Therapist

With a Bachelor’s degree in Early Childhood Education with a specialization in Special Needs, Wanika brings a strong background in child development and inclusive teaching. She has experience supporting children with ASD, ADHD, hearing impairments, and various developmental disabilities. As an Instructor Therapist, Wanika is dedicated to helping children build skills and independence through individualized, evidence-based interventions. She has completed the RBT 40-hour training and holds Standard First Aid and Infant/Child CPR certification. Fluent in English, Cantonese, and Mandarin, Wanika values open communication with families and a collaborative approach to each child’s progress. Outside of work, she enjoys exploring new educational approaches and resources to continually enhance her practice. 

Hitanshi Sanghadia,Supervised Instructor Therapist

Hitanshi Sanghadia,Supervised Instructor Therapist

Hitanshi holds a Bachelor’s degree in Psychology, a Diploma in Behavioural Science, and a Graduate Certificate in Addictions and Mental Health. She has worked with children with autism and is passionate about helping students reach their full potential. She is truly grateful to be part of the amazing team at Ascent and looks forward to growing, learning, and contributing. Outside of work, Hitanshi enjoys cooking, reading, and spending time drawing. These creative outlets help her stay balanced and inspired both personally and professionally.

Chloe Chan, Supervised Instructor Therapist

Hitanshi Sanghadia,Supervised Instructor Therapist

Chloe holds a Bachelor’s degree in Social Work. Her journey began in 2017, when she started supporting children with Autism Spectrum Disorder (ASD) and other developmental challenges. Through her experience working closely with children and families, she has developed a compassionate and supportive approach to care.

Chloe uses client-centered and strength-based approaches to help each child build confidence, develop new skills, and reach their individual goals. She has also completed the RBT 40-hour training, further strengthening her skills in supporting children with diverse learning and developmental needs. Chloe is passionate about creating a positive and encouraging environment where children feel supported, understood, and empowered to grow.

 

Our Speech-Language Pathologist Team

Tik Yan (Dion) Ng, M.S.Ed., SLP, Reg. CASLPO

ChauYi (Helen) Wong, M.S.Ed., SLP, Reg. CASLPO

ChauYi (Helen) Wong, M.S.Ed., SLP, Reg. CASLPO

Tik Yan (Dion) Ng is a dedicated master’s level Speech-Language Pathologist registered with the College of Audiologists and Speech-Language Pathologists of Ontario (CASLPO). With a specialization in autism spectrum disorder, speech sound disorders, and language disorders, Dion brings a wealth of knowledge and experience to her practice. 

She works with Cantonese, English, and Mandarin-speaking

populations, providing personalized, evidence-based therapy to help individuals improve their communication skills.

Her practice spans across various age groups, helping children and adults alike achieve their full potential in both personal and social communication settings.

ChauYi (Helen) Wong, M.S.Ed., SLP, Reg. CASLPO

ChauYi (Helen) Wong, M.S.Ed., SLP, Reg. CASLPO

ChauYi (Helen) Wong, M.S.Ed., SLP, Reg. CASLPO

With a master’s degree in Speech Therapy, Helen has worked as an enthusiastic Speech Therapist in Hong Kong. Helen has extensive knowledge and training in providing evidence-based practice to pre-school and school-aged children with speech, language and communication needs. Helen has received various professional training such as DIRFloortime®, Estill Voice Training® and Beckman Oral Motor Assessment and Intervention©. Helen is also a full-member of the Hong Kong Association of Speech Therapists (HKAST) and the Hong Kong Institute of Speech Therapists (HKIST).


She is a trilingual clinician, providing services in English, Cantonese and Mandarin.

Amanda Tse, M.S.Ed., SLP, Reg. CASLPO

ChauYi (Helen) Wong, M.S.Ed., SLP, Reg. CASLPO

Amanda Tse, M.S.Ed., SLP, Reg. CASLPO

Amanda is dedicated and compassionate in her profession and always supports clients to achieve their communicative potential. With a warm and friendly personality, she can establish a comfortable and trusting rapport with clients and caregivers.

During her years working as a passionate Speech Therapist in Hong Kong, Amanda accumulated extensive experience working with clients with Autism Spectrum Disorder, developmental disabilities, language disorders and speech sound disorders.  She also received training in PROMPT for motor speech disorders.

She is a trilingual clinician, providing services in English, Cantonese and Mandarin.

Maize Mok, M.S.Ed.,SLPA

Maize Mok, M.S.Ed.,SLPA

Amanda Tse, M.S.Ed., SLP, Reg. CASLPO

With masters degrees in Speech-Language Pathology and Psychology, Maize has extensive experience in both clinical and educational settings. She has worked as a speech therapist in non-profit organizations in Hong Kong, supporting children with diverse speech, language, and communication needs. After relocating to Ontario, she expanded her expertise as an assistant teacher in a childcare centre, further honing her skills in early language development, classroom support, and inclusive practices. Fluent in English and Cantonese, Maize is dedicated to providing culturally responsive, evidence-based support to children and families. She is passionate about fostering a nurturing environment where children can thrive and is eager to bring both compassion and creativity to her role.

Rhoda Aggang, CDA

Maize Mok, M.S.Ed.,SLPA

Rhoda Aggang, CDA

Rhoda hold a Bachelor’s degree in Psychology and a postgraduate certificate as a Communicative Disorders Assistant from Durham College. As a CDA student, she gained hands-on experience in a preschool setting supporting children with diverse developmental needs, including non-verbal children with Autism Spectrum Disorder, through play-based and routine-centred activities. She also has experience working with verbal and non-verbal school-aged children across a range of communication needs, including articulation and AAC. These experiences reinforced her passion for helping children, particularly those with Autism Spectrum Disorder, communicate effectively and build the confidence to advocate for themselves. She strongly believes that everyone deserves the opportunity to communicate their needs in a fun, nurturing, and engaging environment. She is also eager to expand my knowledge in the field of ABA to further enhance her skills in supporting learners with ASD.

Dina, CDA

Maize Mok, M.S.Ed.,SLPA

Rhoda Aggang, CDA

Dina holds a bachelor’s degree in Child and Youth Studies and a Communicative Disorders Assistant (CDA) certification. Through her training, she has worked with children in daycare, school, and speech and language settings, gaining hands-on experience and developing skills in augmentative and alternative communication (AAC). She is passionate about supporting each child in a way that reflects their individual strengths and needs. Outside of work, she enjoys painting and planting. She looks forward to working with children and supporting them as they achieve their goals.

 

Our Occupational Therapy Team

Kathy Wong, REG. OT

Kathy completed her Master’s degree in Occupational Therapy at The Hong Kong Polytechnic University. Before returning to Canada, she worked in both clinical and school settings, supporting English-, Cantonese-, and Mandarin-speaking families in developing practical strategies to enhance their child’s everyday success — from handwriting and self-care to attention and emotional regulation. Kathy is committed to continuous learning and professional development to provide high-quality, evidence-based care for every child and family she supports. She believes that every child learns best through play-based and meaningful interventions that foster growth, confidence, and joy in learning.

  

  

Our Ontario Certified Teacher Team

Ms. Amanda Y., Ontario Certified Teacher, Supervised Instructor Therapist

Ms. Amanda Y., Ontario Certified Teacher, Supervised Instructor Therapist

Ms. Amanda Y., Ontario Certified Teacher, Supervised Instructor Therapist

Amanda has worked more than 6 years in the childcare industry. She received her Bachelor of Education degree from York University in 2023 after continuing her education from Toronto Metropolitan University (formerly known as Ryerson University) and George Brown College. Where she received a Bachelor of Arts degree and a diploma in Early Childhood Education. During her time at Toronto Metropolitan University, Amanda developed an interest in working with students that have exceptional needs and wanted to gain a better understanding on how to connect to them. Amanda is passionate in working closely with students and creating an inclusive classroom. In Amanda’s free time, she can be found baking in the kitchen trying out a new recipe.  

Ms. Nadia, Ontario Certified Teacher

Ms. Amanda Y., Ontario Certified Teacher, Supervised Instructor Therapist

Ms. Amanda Y., Ontario Certified Teacher, Supervised Instructor Therapist

Nadia is a teacher with over 15 years of classroom teaching experience. She has had extensive experience working as a  Special Education Teacher and is skilled at differentiating the curriculum so that special needs students can be successful in school . Nadia received her Masters of Education through Medaille College in New York. She also has a Bachelor in Social Work . Nadia has specialist Qualifications in Special Education and is also a qualified French Teacher.  

Mary Rizk, Ontario Certified Teacher

Ms. Amanda Y., Ontario Certified Teacher, Supervised Instructor Therapist

Mary Rizk, Ontario Certified Teacher

 Mary Rizk is an Ontario Certified Teacher with a strong passion for supporting children in their learning and development. She graduated with a Bachelor of Health Science in 2022 and a Bachelor of Education in 2024, in the Junior/Senior division, both from Wilfrid Laurier University.

Mary’s background in both health and education has deepened her interest in areas such as speech and language development, individualized learning strategies, and inclusive education. She enjoys finding creative and effective ways to support students with diverse needs and help them build confidence in their abilities.

She is especially interested in child development, speech and language acquisition, and using differentiated instruction to meet the unique needs of every learner.

Mary is passionate about creating a supportive, engaging learning environment where students feel confident, capable, and encouraged to grow. Building strong, positive relationships with students and their families is something she truly values.

For Mary, teaching is all about connection, growth, and creating a space where every student feels seen, supported, and capable of success.

Loumaryden T.. Ballesta, EA

Loumaryden T.. Ballesta, EA

Mary Rizk, Ontario Certified Teacher

Dedicated to providing quality and evidence-based care to help children with special needs achieve outcomes in collaboration with other professionals. Dedicated in offering diverse clinical experiences, compassion, empathy, and strong interpersonal skills, to serve with will and heart.

WeiLi Ruan, EA

Loumaryden T.. Ballesta, EA

WeiLi Ruan, EA

 I am a special education assistant teacher at Ascent Speech Therapy with over three years of experience working within the York Region District School Board. I support students with diverse learning and communication needs and value culturally responsive practice. I am fluent in Cantonese, Mandarin,English and Spanish, which allows me to communicate effectively with students, families and multidisciplinary teams from diverse backgrounds.

We provide a free consultation upon registration.

We strongly believe in collaborative working, creating a treatment plan specifically for your child.

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Ascent Speech Therapy

7170 Warden Ave. #14 & #24, Markham, ON L3R 8B4 / info@ascentspeechtherapy.ca / ascentspeechtherapy@gmail.com / Wechat ID:Ascent9059280588

+1 905-928-0588 (English , Mandarin Speaking 中文)

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