Clinical commissioning groups (CCGs) are the cornerstone of the new health system. Each of the 8,000 GP practices in England is now part of a CCG. There are more than 200 CCGs altogether commissioning care for an average of 226,000 people each.
CCGs commission the majority of health services, including emergency care, elective hospital care, maternity services, and community and mental health services. From April 2015 many CCGs began to take on more responsibility for commissioning general practice in their area.