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, in your home across Durham Region, 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.