John Williamson, M.S., CCC-SLP
Speech-Language Pathologist

John provides speech therapy sessions in interactive settings, such as your own home or your child’s therapy clinic. He offers on-site sessions in Seattle, on the Eastside and in South King County. Flexible and convenient scheduling options are available, including evenings and weekends. Contact John to schedule Speech & Language Therapy services today.

Fees: John accepts Premera insurance or Private Pay.

  • Individual Speech & Language sessions
  • Friendship/Social Skills groups for children, adolescents and young adults
  • Parent Coaching sessions
  • General Consultation for speech, language or social skills-related concerns
  • Autism screening
  • Teletherapy training for professionals/schools
Areas of specialty include:
  • Social skills and social anxiety
  • Pragmatic language
  • Articulation, phonological skills and apraxia of speech
  • Expressive/receptive language development
  • Reading skills and literacy
  • Stuttering and dysfluency
  • Functional communication, AAC devices
  • Self-regulation and behavioral strategies
Credentials and Training
  • Master’s Degree in Clinical Speech-Language Pathology
    Northern Arizona University
  • Certificate of Clinical Competency
    American Speech-Hearing Association (ASHA)
  • Certification (CCC-SLP):
    • PROMPT Level 1
    • SCERTS Model, Pivotal Response Treatment (PRT) Level 1
    • Pro-ACT, Non-Violent Crisis Prevention (CPI), LSVT
    • Youth Mental Health First Aid
    • Positive Discipline, LiPS by Lindamood Bell
    • Positive Discipline Certified Educator

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John Williamson, M.S., CCC-SLP
Speech-Language Pathologist
(206) 372-5490 phone
(206) 458-7614 fax


Fees: John accepts Premera insurance or Private Pay.