NEED TO SETTLE MY DOCTOR: WHERE'S MY CLIENT ID?

So, I'm going to pay my medical bill, and it says I need a client ID. The thing is: I can't find it anywhere! I've looked in the paperwork. Did my doctor's office send it to me? Is there a different website? Any ideas on how to this client ID would be super useful. Accessing Veradigm Pay My Doctor for Payment Problems Are you facing difficultie