sentences:  Some concierge practices are cash-only or 'direct' primary care practices and do not accept insurance of any kind.In doing so, these practices can keep overhead and administrative costs low, thereby providing affordable healthcare to patients.Concierge physicians care for fewer patients than those in a conventional practice, ranging from 50 patients per doctor to 1,000, compared to 3,000 to 4,000 patients that the average traditional physician now sees every year.