Doctors have seen more than enough body parts of males and
females during their houseman training. Therefore when they happen
to examine female patients who are significantly attractive, to
them its just one part of the body that they are familiar
with.
In all medical practices in Singapore, a female nurse or chaperon
is required when a male doc is examining a female patient. Its all
about professionalism and ethics when they do the examination.
Usually the male doc if he wan to play safe will ask the patient
for permission or let the female patient do self examination.
Sometimes if the male doc knows a female doc is just around the
corner, he will ask the female doc to do the examination on his
behalf.
For me i am not a doc but i have seen female patients myself along
with doctors. The thing is, we dun usually have horny thoughts but
more of doing findings so that we can relieve the female patients
of pain or investigate the cause of the problem. There are times
where u see an attractive female but she's involved in road traffic
accidents. When u see the bloodied body, i doubt the first thing in
mind is to be horny lol. Its more of getting her out of the
critical condition.
Then again in all forms of jobs there are always black meh mehs. So
if ladies are definitely not comfortable having a male doc to
examine, she can always ask for female ones. 
