As a former Medicare fraud investigator, i feel I have been well informed about what medical necessity means. As far as i know, it’s the insurance company that decides, Not the Medical provider.

If i were in your situation I would email or text my insurance company and ask: 1. if the insurance company covers those tests 2. If so, under what circumstance's your insurance company covers those tests

I checked a few hours ago on the Medicare website for when they cover bone density scans more frequently than once every two years. There was a very specific and detailed list of the specific occasions/circumstance's.