Different Professions

What is the difference between Psychiatrists, Psychologists, Psychotherapists, Counsellors and Social Workers?

As a Registered Psychotherapist, I am often asked about the differences between these professional titles. The distinctions can understandably feel confusing, as roles and regulations vary by jurisdiction. Below is a brief overview based on the mental health framework in Ontario.

Psychiatrist

A psychiatrist is a medical doctor who specializes in mental health. Psychiatrists are trained to assess, diagnose, and treat mental health conditions, and they are licensed to prescribe medication. While some psychiatrists provide psychotherapy, many focus primarily on medication management and medical treatment. Psychiatric consultation may be helpful when medication assessment or pharmacological treatment is indicated as part of your care.

Psychologist

In Ontario, Psychologists (doctoral level) and Psychological Associates (master’s level) are regulated by the College of Psychologists and Behaviour Analysts of Ontario (CPBAO). They are authorized to assess, diagnose, and treat mental health conditions. The key difference between a psychologist and a psychiatrist is that psychiatrists are medical doctors who can prescribe medication, whereas psychologists do not prescribe medication and focus on assessment and psychotherapy.

Psychotherapist

In Ontario, Registered Psychotherapists are regulated by the College of Registered Psychotherapists of Ontario (CRPO). Psychotherapists provide psychotherapy (talk therapy) to support individuals with emotional, relational, and mental health concerns. CRPO registrants may hold diverse academic backgrounds; however, all must meet defined education, supervised practice, and competency standards established by the College. A key difference is that psychologists are authorized to provide formal psychological diagnoses, whereas diagnosis is not within the scope of practice of Registered Psychotherapists in Ontario.

Counsellor

In Ontario, the title "counsellor" is not a regulated health profession designation. Individuals using this title may have a wide range of educational backgrounds and training levels. Some counsellors are members of regulated colleges (such as CRPO or the Ontario College of Social Workers and Social Service Workers), while others may not be formally regulated. For this reason, it is important to verify whether a provider is registered with a regulatory college in Ontario, as regulated professionals must meet defined standards of education, supervision, and ethical conduct.

Social Worker

In Ontario, Social Workers are regulated by the Ontario College of Social Workers and Social Service Workers (OCSWSSW). They may provide psychotherapy, counselling, and case management, while also addressing broader social and systemic factors such as poverty, unemployment, domestic violence, and access to community resources.
Social Workers practice in hospitals, schools, community agencies, correctional facilities, child protection services, and private practice. In Ontario, formal psychological diagnosis is not within the scope of practice of Social Workers.