So...no surgery tomorrow; it will be next week instead. Got to the orthopedic surgeon's office today (the one to whom our in-network hospital referred us, and whose eligibility I checked with the insurance provider on Tuesday morning) and discovered that he is not, in fact, in Beloved's network. Got the (rueful) boot from the doc's front desk staff.
Sat in the car and called the insurance provider, receiving three more names which would later prove ineligible, upon further investigation. Thankfully, the doc called Beloved's cell phone and invited her back in, for free, to explain the surgery and what she should expect, to refill her almost-empty scrip for pain meds, and (may he live 1,000 years) to get us in with another surgeon in the area, whom he trusts. And his staff checked with the new guy's staff and made SURE that the insurance end checked out OK.
So we're going to see the new guy tomorrow, and the surgery will be next week sometime.
Thank you, Doc.