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Mills Gosse Psychology
Mills Gosse Psychology
New Clients
WSIB
MVA
First Responders
Therapy - Adult
Therapy - Child
Psychoed Testing
Gifted Testing
ADHD Testing & Therapy
General Psychological Testing
Online Therapy
Conditions We Treat
ADHD
Anger Management
OCD
Trauma & PTSD
Anxiety
Depression
Grief
Sleep Disorders
About Us
Our Philosophy
Treatment Options
Community Partnerships
FAQs
Privacy
Our Team
Join Our Team
Contact
Become a Client
Become a Client
Mills Gosse Psychology
Mills Gosse Psychology
New Clients
WSIB
MVA
First Responders
Therapy - Adult
Therapy - Child
Psychoed Testing
Gifted Testing
ADHD Testing & Therapy
General Psychological Testing
Online Therapy
Conditions We Treat
ADHD
Anger Management
OCD
Trauma & PTSD
Anxiety
Depression
Grief
Sleep Disorders
About Us
Our Philosophy
Treatment Options
Community Partnerships
FAQs
Privacy
Our Team
Join Our Team
Contact
New Clients
Folder: Services
Back
WSIB
MVA
First Responders
Therapy - Adult
Therapy - Child
Psychoed Testing
Gifted Testing
ADHD Testing & Therapy
General Psychological Testing
Online Therapy
Folder: Conditions
Back
Conditions We Treat
ADHD
Anger Management
OCD
Trauma & PTSD
Anxiety
Depression
Grief
Sleep Disorders
Folder: About
Back
About Us
Our Philosophy
Treatment Options
Community Partnerships
FAQs
Privacy
Folder: Team
Back
Our Team
Join Our Team
Contact
Become a Client

Our Service Area

Our head office is located in Ajax, Ontario, and we serve clients across the Durham Region, including Pickering, Whitby, and Oshawa. We also have clinicians providing care in Peterborough, Hamilton, and Mississauga. Many individuals and families choose to travel to us when wait times elsewhere are long. Distance should never be a barrier to accessing high-quality mental health care.

Contact

Address: 467 Westney Rd S Unit 4, Ajax, ON L1S 6V7‍
Telephone: (905) 686-7184‍ ‍
Email: info@millsgossepsychology.ca
Hours: Monday - Friday, 9 am - 5 pm (evening & weekend appointments available)

If you would like to become a client,
we are here to help.

Become a Client
Become a Client

© 2026 | Gosse Psychology Professional Corporation o/a Mills Gosse Psychology | Therapy and assessments for children, teens, and adults across the Durham Region and surrounding communities, including Ajax, Oshawa, Whitby, Peterborough, Mississauga, and Hamilton. Icons by flaticon.com.