Thank you for posting in the Community. I can help provide the support you need to correct the information within the Recipient name box in QuickBooks Desktop for Mac.
Right now, we haven't received reports from other users about printing 1099's in the Mac version. Since you already checked the information from the Vendor Center, I recommend contacting our Phone Support Specialists.
One of them will need to check what's causing these details to show in the Recipient name box using the tools they have. Here's how you can reach them:
Please reach out to me here should you need any additional assistance, the Community seeks to serve you.