Thanks Jim for the quick reply. I did just contact PayPal and they report that they do not offer such a feature (requiring phone #). They suggest that I'd need to somehow capture that information on my own, before the customer chooses to pay by PayPal.
Any ideas on the best way to do this? If you view my site (www.dancesupplies.com), in my Shopping Bag screen, the customer can choose PayPal, Google, Amazon before they even get to my checkout screen where they would enter such information.