Your family doctor. Your doctor can talk through your concerns, check for medical causes such as thyroid problems or sleep disorders, and in some cases diagnose ADHD and start treatment. For more complex situations they may refer you to a psychiatrist. Psychiatry is covered by Alberta Health Care, but waits for adult ADHD assessments can be long.
A psychologist. Psychologists in Alberta can assess and diagnose ADHD, and you can book directly. Psychologists do not prescribe medication, so if medication is something you want to consider, the report goes to your family doctor, who can prescribe or refer you on.