Perhaps such Partners for Better Care is such a movement. The organization has 6 objectives. Most important (at least in my opinion) is this statement:
"We believe patients should have access to adequate formularies that do not discriminate against any medical conditions and ensure patients have affordable access to prescription drugs, devices, and other therapies. Tiering and pre-authorization limitations are becoming more common in formularies, and problems persist with access to devices and allied health professionals such as physical therapists."
I am not usually a joiner beyond my shul and gym. But I just joined PBC. You should too.