Hi Kim, I personally don't have a recommendation for you, I live in Hawaii and there are pretty much no doctors that have experience with treating GM here, that I know of. But through reading past posts there is mention of doctors with experience. Please read through the past posts, I think you'll learn a lot about GM. And do not give up hope, we will all overcome this obstacle in our lives, we just need patience and to listen to our bodies and give love and nourishment to ourselves.
Here's the links:
http://www.medhelp.org/posts/granulomatous-mastitis/A-Doctor-I-Recommend/show/1933333
http://profiles.utsouthwestern.edu/profile/77821/roshni-rao.html
And I believe there is also mention of Dr Laya of Seattle
I hope this helps! Until then, take care and feel free to ask questions! We learn from each other with this disease.