I can relate! We got a letter over the summer that our family doctor was selling his practice. He delivered my daughter, and took care of all of us! We are very upset. The first time I went to the office after that, he was there. I walked in, heard his voice, and had to go into the bathroom so everybody wouldn't see me crying my eyes out.
It's hard when you find just the right doctor who you really trust, and then you lose him.
Good luck! Maybe the new one will be just as good in his own way...or even better???