Recently, the reform consolidated the five main social security funds into a unified social security system, the General Health Insurance Scheme (GHIS - Genel Saghk Sigortasi), which now covers the majority of the population for services provided by a mix of public and private sector facilities (Tatar et al., The Social Security Institution (SSI - Sosyal Giivenlik Kurumu) has become the single-purchaser of health care services. It is funded by contributions from employers and employees, and by government contributions, which finance coverage for low-income people (former Green Card holders) and civil servants.