The only addressing in a bar the Navy needs is...
Watch your rear, the Navies here.
I always find it sad people appear to want to cling onto their past ranks, but hey ho, if it makes them feel good in themselves then let it be.
He said he much preferred the use of 'Physician' as that described what he did - said he did not wish to be associated with Dentists, Vets or Psychiatrists!
Dentists in the UK are not given the title Doctor, even though the first few years o their courses are I believe identical.