Like Paul, I do not "beat around the bush" with my physicians. All are aware of my incontinence and need to wear diapers.
I regularly see my dermatologist for a full-body scan. As I have had melanoma, I take this quite seriously.
Although I normally wear tabbed diapers, I wear a good pullup to the full-body scan. As I try to arrive for the exam with a dry pullup I pee in a toilet just prior to the appointment. My dermatologist (female) scans the diaper area

(asking permission first, of course). A pullup makes it easier for both of us as she can just pull the waist down for a scan.
My incontinence (and its cause) is an important part of my medical history. Even my pain doctor needs to know, as the nerve damage affecting my incontinence also plays a part in my pain. As I have neurogenic bowel, part of my fecal incontinence is affected by chronic severe constipation, and opiate pain medication will increases the constipation.
--John
(double incontinent)