Durham Region Psychologists & Therapists Offering Trusted Mental Health Support

For over two decades, Mills Gosse Psychology has been a trusted provider of psychological care across the Durham Region - including Ajax, Oshawa, Whitby, Pickering and Clarington - as well as the Greater Toronto Area. Known for clinical excellence and a thoughtful, client-centred approach, the team brings extensive experience supporting children, adolescents, and adults through a wide range of mental health concerns. Services are offered both in person and online, allowing care to be accessible, flexible, and tailored to each individual’s needs.

If you are seeking support, help is available. Reach out to begin the conversation.

Workplace Safety and Insurance Board (WSIB)

Motor Vehicle Accident
(MVA)

Services for
First Responders

Therapy for
Adults

Therapy for
Children & Teens

Online
Therapy

Psychoeducational
Assessments

Gifted
Assessments

ADHD
Assessments

General
Psychological & Diagnostic

Issues & Conditions

At Mills Gosse Psychology, we support our clients with a wide range of common mental health challenges.

• Attention-Deficit/Hyperactivity Disorder (ADHD)

• Anger & Anger Management Programs

• Obsessive-Compulsive Disorder (OCD)

• Trauma & Posttraumatic Stress Disorder (PTSD)

• Anxiety, Panic & Phobias

• Depression & Mood Disorders

• Grief & Bereavement

• Sleep Disorders

Our Services

We proudly offer a wide range of psychological services, including therapy and assessments for:

• WSIB Assessment & Treatment

• MVA Assessment & Therapy

• First Responder Therapy

• Therapy For Adults, Children & Teens

• Online Therapy

• Psychoeducational Testing

• Gifted Testing

• ADHD Testing

• General Psychological & Diagnostic Testing

• Services for Organizations

Working With Us 

With our extensive experience, we take pride in maintaining a practice that operates thoughtfully and efficiently.

• Team: A diverse team of therapists and assessors who offer services in several languages. 

• Referrals: Our services do not require a physician’s referral. However, we accept referrals from various providers and organizations.

• Fees & Payments: Our services are covered through most third-party health insurance plans, including employee benefits and WSIB. To ensure accessibility, we offer a sliding fee scale to qualified clients.

Our Location & Service Area

Our head office is in Ajax, Ontario, and we have a dedicated team of clinicians serving clients at other locations in Oshawa, Whitby, Peterborough, Mississauga and Hamilton.

Many individuals and families choose to travel to us when wait times elsewhere are lengthy. Distance should never be a barrier to accessing high-quality mental health care. If you are seeking support for yourself or someone you care about, our team is here to help.

In Person

By Phone

Online

In Your Community