A growing movement in the USA, that is popular with both patients and Doctors.
It allows Doctors to step outside the red tape of government Medicare, and the maze of private insurance bills. It also allows patients to receive ongoing primary care that helps them stay out of hospitals.
The patients pay a regular fee. In turn they can see their own Doctor in a timely manner and community care is a priority.
Doctors patient loads are capped so they have more time to spend with their own caseload of patients.