FRUSTRATED PAY MY DOCTOR: WHERE'S MY CLIENT ID?

Okay, right, I need to pay my doctor's invoice. I visited the system and it says I need a client ID. However, I can't that! What am I supposed to do? Is there a way to access my client ID? Help me figure this out. It's really annoying having to halt payment because of this. Using Veradigm & Pay My Doctor Navigating healthcare expenses can be a c