More clinics are appearing in drug stores and groceries across the country providing quicker and cheaper health care with much shorter wait times for appointments. See here. ( h/t to economist Mark Perry's blog,Carpe Diem)
There are said to be about 8,700 of these urgent care clinics in the country.
These are not exactly the ACOs that are being heralded by some of the self appointed medical elite, the "leaders with ideas". The mini-clinics business models is somewhat simpler and more transparent than the Under Ware Gnome business plan of the ACOs.