Based on my experience with the Mayo this may be helpful. I have a Traditional Medicare Medigap policy, not the Medicare Advantage policy. Mayo accepts patients with Traditional Medicare coverage, not the Medicare Advantage. The Advantage reimbursement
rate is lower than that of Traditional Medicare. My guess is that the reimbursement rate from the VA is also too low for Mayo to stay in business, so they take a pass. IMHO, It is a brutal process. Could you consider calling Mayo directly to learn if you have any options? Self-pay would be one. I understand many of us do not have the financial resources for self-pay. But who knows, being a Vet (let them know that) might open a door for you. The best.....