About COSA

COSA has over 1000 members.  These are doctors, nurses, scientists and allied health professionals involved in both clinical care and cancer research.

COSA is the peak national body representing health professionals from all disciplines whose work involves the care of cancer patients. The overarching mission of COSA is to develop and maintain high-quality clinical care of cancer patients in Australia. Our members are doctors, nurses, scientists and all types of allied health professionals involved with cancer patients. We are allied with, and provide high-level clinical advice to, Cancer Council Australia.

Each year COSA hosts an Annual Scientific Meeting which brings together international and national speakers with COSA members and other interested professionals to share, discuss and learn about cancer research, diagnosis, treatment and care of cancer patients.  This is the main platform for information exchange and learning each year.  COSA funds grants and awards for COSA members, and hosts other cancer specific forums, workshops, professional days and seminars to build the knowledge of COSA members.

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Membership

Visit the join now page for the COSA membership application form.  You can also contact COSA to join. 

Health professionals working in the field of cancer are welcome to join COSA. Individuals can join as members in the following categories: Medical, Medical in Training, Allied Health, Nursing, Student and Retiree memberships. View Member Types for more information.

Affiliated and Associated Organisations to COSA are not for profit companies, institutions or organisations that have similar interests to COSA.

Yes, you do. Individual members of Affiliated and Associated Member Organisations receive a discounted rate on their COSA memberships (excluding Student and Retiree members). All declarations of membership will be verified by the named Affiliated or Associated Organisation.

View Member Types for up to date membership fees.

You do not need a letter from your medical school/institution to join COSA as a Medical in Training or Student member, however, COSA may request enrolment details at any time when auditing memberships. 

Please enter your expected completion date in your member profile.

Please review the information on the Member Types page for current Medical in Training and Student member eligibility information.

Joining COSA offers wide-ranging benefits from creating better services for patients to being able to tap into the best expert discussions in your speciality area.  View member benefits for the full list of membership offers.

Membership is valid from 1 July to 30 June each year.  Members joining before 31 March join for that current year. Members joining after 1 April, join for the next year.

COSA accepts Visa or Mastercard payments via our website. If you prefer to pay by direct deposit or cheque, please contact us.

Members can opt in to have their annual renewal fees automatically deducted from their nominated credit card (usually on 1 July) or manually renew online during the renewal period (usually between April to September). Renewal notices and reminders about autorenewal deductions are sent by email during the renewal period.

COSA have a new membership system from December 2025. If you were on automatic renewal, you will need to renew manually in 2026 and opt back in to automatic renewal in the new system.

To opt-in to automatic renewal, check the relevant box when you sign up or renew.

Please email us so we can investigate any technical issues. Include a description of the issue and screen shot of the problem if you are able to.

Meetings

The major meeting of the year is the Annual Scientific Meeting (ASM).  The ASM is a multidisciplinary meeting with participation from all professional groups involved in cancer care, including medical, surgical, radiation, nursing, pharmacy, research, psychology and other disciplines. 

The ASM is run over three-days and is hosted by a different state each year to draw on local expertise. It is the most significant national multidisciplinary cancer meeting in Australia.

Other meetings hosted by COSA include cancer specific forums, workshops, professional days and seminars to build the knowledge of COSA members.  View the Events page for details.

The ASM is organised by a local ASM Program Committee, the COSA team and management company, ASN Events. 

Yes. COSA welcomes participation in the trade displays from interested and relevant organisations. See the ASM website for more details.

Website

Certain content on the COSA website is only accessible for members. If you are a member, you can sign in to the member portal (top right hand corner) to access this content. If you are not logged in and attempt to access content that is for members only, the website will redirect you to a page where you can log in if you are a COSA member or join COSA if you are not a member.

COSA has a new member portal as of December 2025. Login information will be available soon.

If you have been a COSA member previously and your email address is out of date, contact COSA and the team can assist by resetting your email and password so you can login and rejoin.