Went to the doctors had oxygen checked and it was 92. I said that's low. He said Medicare will only pay for oxygen if it's below 90. He gave me the rest at home because I was waking in the night feeling I needed oxygen. Turned out it was 89 at night.So now I have it at night. Everyone does better when oxygen level is 97-98. Does anyone else have a problem with Medicare not paying for oxygen?