Cost of Dialysis

I finally got my first dialysis bill with Medicare. The statements are all from my work insurance, which is basically Blue Shield of California. There is a huge discrepancy in pricing for different insurance carriers.

I’m only seeing what my insurance paid out. For February and March, they paid ~$26k since I’ve hit my out-of-pocket maximum for the year. For April, I guess Blue Shield know the Medicare reimbursement dollars and they paid out only $837.98, which is ~20% since Medicare pays 80% of medical bills. If the numbers are correct, then my work insurance negotiated cost is over 6x what is paid by Medicare. For April, with 13 days of dialysis, the comes out to ~$320/session for Medicare. This is close to what a coworker told me (he used to work at Davita). The “cost” to Davita for each hemodialysis session is ~$280 so they don’t make much money from Medicare patients, hence the price gouging for patients with commercial insurance. Do they charge $34k/month for patients without insurance?