The Government Employees Medical Scheme (GEMS), a medical scheme registered under the Medical Schemes Act 131 of 1998, refused initially to recognise Mr Ngwato as a beneficiary following the death of his life partner, a GEMS member, due to lack of a marriage certificate. After a policy change, GEMS recognised him as a member but without eligibility for a government subsidy from the Government Pensions Administration Agency (GPAA). Mr Ngwato unsuccessfully pursued complaints and appeals before the Registrar of Medical Schemes and the Council for Medical Schemes. Instead of further appealing under the Medical Schemes Act, he lodged a complaint with the Public Protector. The Public Protector sought to investigate and issued subpoenas to senior GEMS officials. GEMS and its officials challenged the Public Protector’s jurisdiction, contending that GEMS is a private body not performing a public function and therefore not subject to investigation under sections 6(4) or 6(5) of the Public Protector Act 23 of 1994.