Speech-Language Pathology services for English-speaking locals and expats.

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seth koster, m.s. ccc-slp

Speech-Language Pathologist

Providing Online English Language Speech Therapy Throughout Asia Since 2015.

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Speech Therapy for Children

Are you concerned about your child’s development or educational achievement?

We can find and work on any skill deficits your child might have.  We can create a program together that fits into your child’s life.


Speech Therapy for Adults

Have you or a loved one had a stroke or traumatic brain injury?

We can work together to maximize progress by taking advantage of the way the brain creates new connections.


EMU Seal

Bachelor’s of Science – 2007

Howard University Seal

Master’s of Science – 2010

Helping You and Your Family Achieve Success

Providing a Joy-Based Approach to Speech Therapy

When you or your loved one needs the services of a Speech-Language Pathologist, it is very important to consider what those services look like.  The historical approach has been flash cards and drilling in order to be functional. 

I believe in harnessing the power of neuroplasticity by learning through the things you or your loved one finds passion and joy in so that we can create excellence instead of sufficiency. 


I provide the complete range of Speech-Language Pathology services for English-speaking locals and expats in Japan, Hong Kong and across Asia.

I am in your time zone!

Early Intervention Speech Therapy Services

Educational Speech Therapy Services

Medical and Adult Speech Therapy Services

Accent Reduction and Accent Modification Services

Evening and Weekend Appointments Available

Early Intervention Services
Early Intervention Services

Early Intervention Speech Therapy

Early Intervention services require knowledge of not only the childhood speech and language delays and disorders (e.g. Childhood Apraxia of Speech, Autism Spectrum Disorder, Selective Mutism, Language Delay, etc.) but also the unique paradigm of caregiver education.

You are your child’s first, best, and most loving teacher.  I see my job as supporting you and creating in you the best therapist for your child!

Early Intervention Services
Educational Services

Educational Speech Therapy

Often, international schools do not have the services available to provide speech therapy for children due to a lack of available English speaking Speech Therapists in Japan.  I can flexibly work with your child’s school and teachers to augment or supplement the curriculum they have in place.

I use functional activities such as computer programming, video creation, or other fun pursuits to help your child excel!

Medical Speech Therapy Services
Medical Services

Medical Speech Therapy

If you or a loved one has a stroke, head injury (traumatic brain injury) or other emergent medical situation an English speaking Speech Therapist is essential for immediate communication.  For long term care the best speech therapy treatment is based in the same principles as speech therapy for children.  Joy, passion and play!

Speech therapy for adults doesn’t have to be boring, I find what you love and I help you to do it again!

Accent Reduction Services
Accent Modification

Accent Reduction Services

 Even when grammar and vocabulary have reached the highest levels, non-native English speakers often find they have difficulty being understood due to their accent.  This can impact their job prospects, educational opportunities and even their personal lives.

With specialized training in accent modification, accent reduction and accent acquisition, I use evidence based methods of modifying your accent for increased intelligibility!

No Pain No Gain?

“Traditional Speech Therapy doesn’t meet the needs or expectations of the modern, well-educated client.  We need to, as a profession, move towards embedding therapy into the passions of our clients while keeping in mind functional outcomes.  Photography, cooking, programming, film making, writing, and all manner of other pursuits of joy are wonderful therapeutic opportunities.  Your therapy should be an occasion you look forward to, not a task to dread!”

Man working on computer

Seth Koster, M.S. CCC-SLP

Founder and CEO of Therapy In Japan

“Our son was diagnosed with ADHD and had a lot of trouble in school.  Seth helped him with his attention and problem solving by working on programming games.  He’s doing SO much better and he really has fun at his sessions!”

“I don’t know what to do when my husband had a stroke.  I’m Japanese but he’s American and Japanese speech therapists do not help.  Seth san is helping him talk and write again.  My husband is doing much better.”

“When I found out my son had autism I was crushed.  Mr. Seth is very patient and even when I just need to talk about how I am feeling he is always there to support me.  He always has ideas to help my son learn and communicate better.”

Be kind whenever possible.

It is always possible.

~Dalai Lama

Maybe you’re not sure what the next step is, maybe you’re just concerned about taking it.  I understand.  Make an appointment with me and we can discuss it.  If I can help you, I will!  If I can’t, I will do my best to find someone who meets your needs.

My life and family, like yours, has been touched by disability.  I promise that I will bring kindness and care into our discussions and that I will truly listen to you and your needs.  


About Seth Koster

Seth Koster is a Speech-Language Pathologist and sought after international speaker.

He has lectured and taught at universities and hospitals in the United States, Japan and Vietnam on topics including Autism Spectrum Disorders, Childhood Apraxia of Speech and working with linguistically and culturally diverse populations.

He has worked in early intervention, educational, and medical settings, both as a clinician as well as a Program Director.

He currently runs a private practice, serving clients throughout the world by leveraging the power of technology and the internet.

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