Private Healthcare Australia Limited currently has 21 members.
Information about our members can be found here: https://privatehealthcareaustralia.org.au/about-us/member-funds/
Under S4.3 of the Private Healthcare Australia Ltd Constitution:
An Eligible Organisation* may apply to become a Member by submitting to the Secretary a properly completed application in the form prescribed by the Board. An application for membership may be accompanied by:
(a) such evidence as the Board requires to determine that the applicant is an Eligible Organisation; and
(b) the Application Fee (if any, pursuant to clause 4.6) payable by the applicant.
*Eligible Organisations is defined as a health insurance business that is registered under Division 3 of Part 2 of the Private Health Insurance (Prudential Supervision) Act 2015 (Cth).
http://classic.austlii.edu.au/au/legis/cth/consol_act/phisa2015514/