Hi @deborahwolf, I don't know any doctors in Indiana; however, when I searched for MAC in Indiana a lot of medical research/essays coming from Indiana University (in Indianapolis, which I don't believe is in the Southern region) came up.

If you haven't already considered it, I might try reaching out to the Indiana University School of Medicine or the Indiana Bloomington University Hospital (closer to your region)? They might be able to recommend someone or point you in the right direction.