@roger,
That was my thought - I kind of felt bad so I was going to let this person know I was not this Dr....then I thought better, is this a spam or something so to be cautious I did not answer.
I would say a several years ago I did get an odd text - someone looking for somebody - I did text back saying I wasn't that person and they thanked me - at the time it did not occur to me that you could get spam and so forth via text.
I also had the opposite happen to me - I texted a "friend" and then the person texted back and said they were not who I thought it was - I had previously looked at it like a wrong number - I got a digit wrong.