Thanks for the link. I'll read it in a minute. All my doctors appeared to be in pretty good physical shape except for number 3, who was short and dumpy. Not hugely obese, but overweight. Doctor #1 may have smoked (don't remember) because everyone did in the 1950's and 60's. Number 2 smoked a pipe. The last 2 didn't smoke as far as I know.
The weird thing about the current doctor is that after number 3 died, I started going to him. I said "How old are you? I'm not sure if you want to take me on as a patient because all my doctors die fairly young. They don't make it much past 60, if they make that." He said he was 50, I think, and that was about 10 years ago. He smiled and said "I believe I'll be okay taking you as a patient." I don't know what killed him. Probably a stroke or heart attack since my wife saw him last Tuesday for allergies, and he was working.
My first 3 doctors have their pictures on the lobby wall at a local hospital with their birth and death dates, so that is how I remembered their ages.