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 singlepurchaser of health care services it is funded by contributions from employers and employees and by government contributions which finance coverage for lowincome people former green card holders and civil servants