The NHSO is a state agency, officially founded in 2002, under the National Health Security Act. It is responsible for the health security of 47.5 million Thai citizens. Every person born as a Thai should feel secured, irrespective of being sick or not. The mandatory duties of the NHSO are to manage the health security fund and allocate the subsidiary budget to 236 clinics and 963 hospitals to promote and develop a good health care system for all Thai people in order to assure the quality of care provided to Universal Coverage (UC) members. The NHSO has to control and supervise health care units to achieve the required standards of health services for all members.