Accepting New Clients
Appointments Available with Minimal Wait Times
If you would like to become a new client, getting started is simple. First, complete a new client inquiry form, so our team can match you with the right clinician and appointment option for your needs. Or, if you have questions before getting started, contact us; we’re always happy to help.
Durham Region Psychologists & Therapists Offering Trusted Mental Health Support
Mills Gosse Psychology has supported individuals and families across the Durham Region for more than 20 years. Based in Ajax, Ontario, our team of psychologists and psychotherapists provides care at multiple clinic locations, including Oshawa, Whitby, Peterborough, Mississauga, and Hamilton.
We offer therapy and assessment services for children, teens, and adults, including specialized support for first responders, injured workers (WSIB), and individuals recovering from motor vehicle accidents (MVA). We also provide psychological testing services, including psychoeducational, ADHD, and gifted assessments.
Known for clinical excellence and a thoughtful, client-centred approach, our services are available in person, by phone, and online, allowing care to be flexible and accessible.
Our Psychology Services
At Mills Gosse Psychology, we proudly offer a wide range of services, including:
Assessments & Therapy for Recovery
Therapy & Counselling
Assessments & Testing
At Mills Gosse Psychology - We Help People.
Issues & Conditions
At Mills Gosse Psychology, we support our clients with a wide range of common mental health challenges.
Our Services
We proudly offer a wide range of psychological services, including therapy and assessments for:
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 Areas
Our head office is located in Ajax, Ontario.
We also have a dedicated team of psychologists and psychotherapists providing care at additional clinic locations in Oshawa, Whitby, Peterborough, Mississauga, and Hamilton.
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. If you are seeking support for yourself or someone you care about, our team is here to help.
Appointments
Appointments can be arranged in person, over the phone, or online through secure video platforms.
We strive to provide accessible care and typically do not hold waitlists.

