If you’re seeking mental health support for the first time, you’re not alone in wondering: what’s the difference between a psychologist and a psychiatrist? The two professions are often confused, yet they differ in training, what they can do, and the types of treatment they provide. This guide breaks down everything you need to know — in plain language — so you can make an informed decision about your care.
What Is a Psychiatrist?
A psychiatrist is a medical doctor who has specialised in mental health. In Australia, a psychiatrist has completed a medical degree (MBBS or equivalent), at least one year of general medical work as an intern, and then a minimum of five years of specialist training in psychiatry through the Royal Australian and New Zealand College of Psychiatrists (RANZCP). Upon completing this training, they are awarded Fellowship of the College — the designation FRANZCP.
Because psychiatrists are medical doctors, they can assess both the physical and mental factors contributing to a person’s symptoms. They can diagnose mental health conditions, prescribe medication, order and interpret blood tests and brain scans, and provide psychotherapy. In Australia, psychiatrists must be registered with AHPRA (the Australian Health Practitioner Regulation Agency).
To learn more about how our psychiatrists work with patients via telehealth, see our online psychiatry page.
What Is a Psychologist?
A psychologist is a university-qualified professional who studies human behaviour, emotions and the mind. Psychologists complete a minimum of six years of education and training in psychology, which may include a postgraduate degree and supervised practice. In Australia, psychologists are registered with the Psychology Board of Australia (also under AHPRA).
Psychologists use talk-based therapies — such as cognitive behavioural therapy (CBT), acceptance and commitment therapy (ACT), and other evidence-based approaches — to help people manage and overcome mental health difficulties. However, psychologists cannot prescribe medication. They are not medical doctors and do not have medical training.
Some psychologists hold the title of clinical psychologist, which requires additional postgraduate training in the assessment and treatment of mental health disorders. Others may be generalist or registered psychologists, or hold specific endorsements in areas such as forensic, health or neuropsychology.
Psychologist vs Psychiatrist: The Key Differences
| Feature | Psychiatrist | Psychologist |
|---|---|---|
| Medical training | Yes — full medical doctor (MBBS + FRANZCP) | No — university degree in psychology |
| Can prescribe medication | Yes | No |
| Primary treatment method | Medication, diagnosis, medical assessment, therapy | Talk therapy (CBT, ACT, etc.) |
| Can diagnose mental illness | Yes | Yes (within scope) |
| GP referral required | Yes (for Medicare rebate) | Only for Medicare rebate (Mental Health Treatment Plan) |
| Registration body | AHPRA (Medical Board) | AHPRA (Psychology Board) |
| Medicare item | Psychiatrist consultation | Psychological therapy sessions |
Training and Qualifications Compared
The most fundamental difference between a psychologist and a psychiatrist is their medical training. A psychiatrist’s journey begins with a medical degree — typically five or six years of university study — followed by at least one year working as a junior doctor in a hospital. They then apply for psychiatry training, a competitive five-year program that involves rotations across psychiatric subspecialties, supervised clinical work, examinations and research. Only after completing this rigorous program do they earn the title of consultant psychiatrist with FRANZCP.
A psychologist’s path is different. They complete an undergraduate degree (often three or four years), followed by postgraduate study and supervised practice — typically totalling six years. Some pursue a Master’s or Doctorate in clinical psychology, which allows them to use the title “clinical psychologist.” While psychologists are highly skilled in therapy and behavioural assessment, they do not undertake medical training.
What Conditions Does Each Treat?
Both psychologists and psychiatrists treat mental health conditions, but their roles often complement each other. A psychiatrist is typically consulted for more complex, severe or persistent conditions — particularly where medication may be needed or where there are physical health factors at play. These can include:
- Moderate to severe depression
- Anxiety disorders (panic disorder, social anxiety, generalised anxiety)
- Bipolar disorder
- Post-traumatic stress disorder (PTSD)
- Obsessive-compulsive disorder (OCD)
- Schizophrenia and psychotic disorders
- Eating disorders with medical complications
- ADHD and neurodevelopmental conditions
Psychologists are well-suited to provide ongoing therapy for many of the same conditions, particularly where symptoms are mild to moderate or where medication is not required. For conditions like chronic pain or adjustment difficulties, a psychologist may be the first professional to see. Many patients benefit from seeing both — a psychiatrist for diagnosis and medication management, and a psychologist for regular therapy.
When Should I See a Psychiatrist vs a Psychologist?
Consider seeing a psychiatrist if you:
- Have symptoms that are severe, persistent or getting worse over time
- Are experiencing thoughts of self-harm or suicide
- May benefit from or are currently taking psychiatric medication
- Have a complex diagnosis or have not responded to therapy alone
- Have mental health symptoms linked to a physical health condition
- Need a comprehensive medical assessment of your mental health
Consider seeing a psychologist if you:
- Want to develop coping strategies through talk therapy
- Have mild to moderate anxiety or low mood
- Are dealing with grief, stress, or relationship difficulties
- Want ongoing therapeutic support alongside psychiatric care
Your GP is the best starting point — they can assess your needs and refer you to the right professional. In many cases, your GP will refer you to a psychiatrist if they suspect medication or a specialist medical assessment is needed.
Referrals and Medicare in Australia
To see a psychiatrist under Medicare, you need a referral from your GP (or another specialist). Your GP may refer you for a one-off psychiatric consultation or for ongoing management. The referral allows you to claim a Medicare rebate for each consultation, which significantly reduces your out-of-pocket cost.
To see a psychologist with a Medicare rebate, your GP must prepare a Mental Health Treatment Plan (also known as a Better Access plan or a GP Mental Health Plan). This plan allows you to claim Medicare rebates for up to 10 individual and 10 group therapy sessions per calendar year with a registered psychologist.
It’s worth noting that you can see a psychologist privately without a referral or plan, but you won’t be able to claim a Medicare rebate. To see a psychiatrist, a GP referral is required for both Medicare and, in most cases, for the psychiatrist to accept you as a patient.
For a full breakdown of fees and rebates, see our fees & Medicare page, or read our guide on how to see a psychiatrist in Australia.
Can They Work Together?
Absolutely — and they often do. A common and effective model of care is for a psychiatrist to conduct the initial assessment, confirm a diagnosis and initiate any medication, while a psychologist provides ongoing therapy. The two professionals can communicate (with your consent) to ensure your treatment is coordinated. This team-based approach is particularly common for conditions like severe depression, bipolar disorder, PTSD and OCD, where combining medication and therapy produces the best outcomes.
The Bottom Line
The difference between a psychologist and a psychiatrist comes down to training and what they can do. Psychiatrists are medical doctors who can diagnose, prescribe medication and provide therapy. Psychologists are experts in talk therapy and behavioural interventions who cannot prescribe medication. Both play vital roles in mental health care, and the right choice depends on your individual circumstances, symptoms and preferences. When in doubt, speak to your GP — they’ll help you decide which path is right for you.
If you’d like to see a psychiatrist via telehealth, we’re here to help. You can explore the conditions we treat or book an appointment today.