@jaderm, if you have the means to pay an endocrinologist out of your pocket, I would do it. Health in the first place, in my opinion. Waiting months for a doctor from your insurance to be treated, can cost you more at the end of it. My epileptologist does also not take my insurance. But I thank for having him as my doctor!
I believe that with Covid it is now possible to have video appointment with a doctor/endocrinologist at Mayo Clinic. Check this out, if physical examination would be necessary. All your exams I believe that could be sent through the internet or not? Just ideas.
Santosha