Thank you Betty J. I called OptumRx today. Your information was totally correct.
Eventhough I have been using OptumRx for Part D pharmacuticles, I had forgotten that they offered Part B coverage for insulin used with a pump. They don't carry One Touch test strips and I now remember that was the reason I started with Liberty Medical. But finding the strips is not a problem.
I hope that OptumRx does not discontinue Part B coverage because of reimbursement by Medicare.