Need to see a doctor? You may have to wait. A survey of physician practices in 15 metropolitan areas across the country, which was taken before the health law expanded coverage, found that the average wait time for a new patient to see a physician in five medical specialties was 18.5 days. The longest waits were in Boston, where patients wait an average of 72 days to see a dermatologist and 66 days to see a family doctor. The shortest were in Dallas, where the average wait time is 10.2 days for all specialties, and just 5 days to see a family doctor.