Why are female doctors introduced by first name while men are called ‘Doctor’?

The study, published in the Journal of Women’s Health, looked at videos of 321 speaker introductions at 124 internal medicine grand rounds from 2012 through 2014 at Mayo Clinic campuses in Arizona and Minnesota. The results showed that male introducers used professional titles for female doctors only 49 percent of the time on first reference, but introduced male doctors by their titles 72 percent of the time.

Female introducers used titles in introductions of both male and female doctors more often than male introducers (96 percent of the time vs. 66 percent of the time).

Janice Neumann, Washington Post, June 24, 2017