A mental health care plan is a support plan document prepared by a general practitioner for someone who is going through mental health issues. If a doctor agrees that you need additional support, you and the doctor will make the treatment plan together, which may include referral to a mental health expert like a psychologist. With a valid MHCP and referral letter, Medicare offers rebates for 20 individual psychology sessions within a year. This means you can claim back between $90 - $133 per session (depending on your psychologists specialisation).