About Us

Semiahmoo Speech Services is a full service speech-language therapy clinic. Services are available for clients from birth. A team of Speech-Language Pathologists provide assessment and intervention to the clients at Semiahmoo Speech Services. Each Speech-Language Pathologist is registered through the provincial association, British Columbia Association of Speech-Language Pathologists and Audiologists  (BCASLPA) and the national association, Speech-Language and Audiology Canada (SAC) and the College of Speech and Hearing Health Professionals of BC (CSHHPBC). All Speech-Language Pathologists hold Master degree levels of education.


Additional expertise is available in:


    • Autism/The Registry of Autism Service Providers (RASP): Professionals from our centre are providers through Autism Community Training (ACT).
    • Hanen Parent Training: a practical parent program dedicated to helping young children with language delays and those at risk of developing language delays to communicate to the best of their abilities.

Petulla M. Dedish

Petulla, M.Sc., RSLPPetulla M. Dedish, owner of Semiahmoo Speech Services, is a Registered Speech-Language Pathologist. 

  • Master of Science degree from the University of British Columbia (UBC)
  • Registered with BCASLPA (British Columbia Association of Speech-Language Pathologists and Audiologists)
  • Certified with SAC (Speech-Language and Audiology Canada)
  • Designated service provider through Autism Community Training (ACT)
  • Appointed Clinical Instructor of the Faculty of Medicine, School of Audiology and Speech Science, UBC
  •  Registered with CSHHPBC (College of Speech and Hearing Health Professionals of BC)


For our preschool clientele, our goal is for the children to take part in play-based therapy while developing their speech, language and communication skills. The children will be ‘playing’ with their therapist while practicing a specific speech sound, learning an identified language structure or enhancing a targeted social skill. Our school-age children enjoy therapy working at a table with their clinician in the comfort of a private therapy room. Parents are encouraged to participate in all sessions to the level that they are comfortable. Most of the children will be given homework to practice with their family until the next therapy session.

Child-centered, play-based.

By practicing the speech and/or language exercises according to the therapist’s recommendations, progress occurs more rapidly as indicated in the speech and language development literature.

Our adult clients may require therapy for a variety of reasons including Speech Disorders (Apraxia, Dysarthria, Stuttering and Voice), Language Disorders (Aphasia), Medical Conditions (Stroke, Traumatic Brain Injury) and Elective Services (Accent Modification).

To our valued clients:

The College of Speech and Hearing Health Professionals of BC (CSHBC) is closely monitoring the rapidly evolving developments with the COVID-19 (novel coronavirus) pandemic. Based on the latest developments in British Columbia, and effective March 19, 2020 CSHBC strongly recommends that all Speech-Language Pathologists (RSLPs)  who work in private practice suspend in-person elective and non-essential services.

CSHBC recommends that providers follow this protocol until further notice at which time they should re-evaluate the situation.

At SSS, we want to do our part in reducing the spread of this nasty virus. As of today, we have closed our doors for direct service. We will consider offering “virtual care” when and where appropriate and according to client ability and needs.

Thank you for your support and understanding during this challenging time.  We will ALL miss our families and look forward to regular services returning to soon🌹

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