You don't necessarily need an Endo for you wife. She needs a good thyroid doctor, by which I mean one that will evaluate her for symptoms first, and also do all the needed testing to make a tentative diagnosis. If she is diagnosed as hypo, then you want the doctor to prescribe thyroid medication necessary to relieve symptoms, regardless of resultant TSH level. I have sent you a Pm with info. To access, just click on your name and then click on messages.
In preparation for any meeting with a doctor I highly recommend clicking on my name and then reading at least the one page Overview of a full paper on Diagnosis and Treatment of Hypothyroidism: A Patient's Perspective.
If you want please tell us about any symptoms your wife has, and also post her thyroid related test results and reference ranges shown on the lab report and we may be able to give you info that will help with any doctor that she sees.