I saw two rheumatologists during my search for a diagnosis. They each did a good job of reviewing what the first 2 of the 4 neuros I ultimately saw, and scheduled what I felt were thorough blood tests. Some were repeated because they had been done awhile ago, others tests seemed to be on the rheumo side of things rather than neurology. Neither came up with my MG diagnosis, and neither had any better ideas based on the tests and history. But I was impressed with both, just knew I wasn't in the right place. It wouldn't hurt to get their side of the story, especially if the neuros haven't sorted things out for you to date. Best wishes!