What, if anything, should I do about this creepy message?

I received this message today [over facebook] from someone I dont think I’ve ever met. I redacted the names for privacy.

“Ok. Super creepy moment from me.

My name is K. and I work for Dr. L. I saw how much my lifelong friend, MP, is soo happy to have you in their life and I thought your name was super familiar :) You are a patient of Dr. L’s, right?

Of course, I would never say anything (for legal reasons and respect reasons) to MP about you being a patient, but I thought it was so cool! What a small world!

Best wishes and happy happiness,
K.
Front Desk – Dr. L
Ps. Feel free to tell MP if YOU want to :)”

This VERY MUCH creeps me out!!! I haven’t had a chance yet to ask MP, my significant other of just a few months, if they do indeed know this person.

At first I didn’t recognize the doctor’s name, but after googling I realize it is a gynecologist I went to once! Probably a year or more ago! UGHHHH! I feel like my privacy has been violated, and I really want to say something to the office manager at the doctor’s office. This is not appropriate!

But on the other hand, I don’t want to be “a bitch” or for MP’s friend to get fired over it (if this person is indeed a friend). I’m really torn.

Advice, suggestions? Of course I plan to talk to MP about it asap.