Yes, I do have a Rx.
The first oxygen provider from Blanding, Utah, brought an air concentrator to the house with a canula and said they couldn't provide up to 10 liters flow/minute. They kept treating me like a patient with lung issues. What a disappointing experience. I spoke to others on the phone who said they were unable to go up to the 10 liters per minute I needed, and when they did have the supplies they reserved them for hospice patients (LinCare and Alpine Air in Price, Utah).
But, I just got off the phone with MountainAire Medical Supply in Grand Junction, Colorado, and I think they're going to set me up. When I called, the lady on the phone knew immediately what I needed; how refreshing! They have the regulator to rent but also suggested buying my own to save money. Now I'm waiting for my neurologist to send them the Rx. Fingers crossed!