ABA & Autism Support Services in Whitby & Durham Region

Ascent Clinical Services provides applied behaviour analysis (ABA), counselling, and speech-language therapy for children and youth with autism and developmental disabilities.

Our team of Registered Behaviour Analysts, a registered social worker, and a CASLPO speech-language pathologist deliver individualized, evidence-based care — in our Whitby clinic or virtually anywhere in Ontario. As an approved Ontario Autism Program (OAP) provider, we help families access the right service, without the wait

Our services

  • Caregiver-mediated early intervention session for a toddler with autism

    Early Years Caregiver-Mediated

  • Caregiver-mediated early intervention session for a toddler with autism

    Applied Behaviour Analysis (ABA)

  • Illustration representing family mental health and wellbeing support

    Mental Health Services

  • Speech-language pathology in Durham Region

    Speech-Language Pathology

Meet our team

  • Melissa Lavallee, BCBA and founder of Ascent Clinical Services

    Melissa Lavallee

    Registered Behaviour Analyst

  • Lisa Giewercer, RBA, Ascent Clinical Services

    Lisa Giewercer

    Registered Behaviour Analyst

  • Laura Endicott, Senior ABA Clinician, Ascent Clinical Services

    Laura Endicott

    Senior ABA Clinician

  • Urvashi Sirur, ABA Clinician, Ascent Clinical Services

    Urvashi Sirur

    Senior ABA Clinician

  • Jordanna Guida, RSW, Ascent Clinical Services

    Jordanna Guida

    Registered Social Worker

  • Juliana Hifawi, SLP, Ascent Clinical Services

    Juliana Hifawi

    Registered Speech-Language Pathologist

In-person and remote options

We provide in-person services in our Whitby clinic or with community organizations throughout Durham Region, north-east Toronto, and York. Outside of our catchment area or prefer virtual services? We’ve got you covered with teletherapy.

Get started with

Ascent Clinical Services.