Adult Diagnosis

Assessments for autism in adulthood are becoming more common as a result of expanding diagnostic criteria and a significant increase in awareness and understanding. The most common reasons that adults seek out diagnosis and support are difficulties with social interaction and mental health. An autism diagnosis can be a validating experience and can help adults better understand themselves and their experiences. 

Autism Ontario does not provide diagnosis; however, we can provide resources to assist people in their search for a qualified provider.

How to Access Adult Diagnosis in Ontario

Generally, adults are diagnosed either by a psychiatrist or a psychologist.

Diagnosis by a psychologist

• Psychologists may be covered under the Ontario Health Insurance Program (OHIP) if they work in a public healthcare setting such as a hospital or clinic. To access a publicly funded psychologist, a person may request a referral from their general practitioner (e.g., physician or nurse practitioner) to a psychologist in a public health care setting. 
• Psychologists also practice as private practitioners who work on a fee-for-service basis. To access a private psychologist, a person may self-refer, or be referred by their general practitioner. These fees would be out of pocket or may be funded by a private insurance plan (e.g., employment benefits). Unfortunately, Ontario Works and Ontario Disability Support Program (ODSP) do not normally fund psychological assessments. 

Diagnosis by a psychiatrist

• Psychiatrists are covered under OHIP. To access a psychiatrist, a person may request a referral from their general practitioner (e.g., physician or nurse practitioner) to a psychiatrist in their community. 

It’s important to note that it is more common to be diagnosed by a psychologist compared to a psychiatrist. 

Where to Get an Assessment