At my last (April) physical with a PA, who had spent 40 minutes assembling my history from the sources that I had provided, I didn't get undressed, and the clue, in plain sight, was the exam table in seating position with no white paper across it.
At the dermatologist (April) the assistant/scribe took me from the waiting room to the exam room. She went over the few questions, and gave me the option of everything off except underwear, or a gown. I opted for underwear, and met the male dermatologist in my briefs.
The Medicare Wellness exams have been covered above.
The pics from my album are from my family doctor in Maine. Each time, the same nurse would bring me from the waiting room to the exam room. She'd go over updates, check vital signs, pull out exam shorts (asked about if you scroll from the beginning of the thread), and leave. The first time, my doctor came in, went over my history, updates, then said that he would step out, pointing to the exam shorts. I've posted that they were XL, so I stripped to briefs. Each year after that, I would strip to underwear after the nurse had left. The doctor would do the exam first, then go over updates.