Yes if you plan to sign them up for automatic payment in the software. Much like Netflix, Amazon, Facebook, etc. an email is required for all accounts added to the software.
Your patients will receive all account alerts via email including their monthly payment receipts (which they can in turn print out at home at their discretion). Your patients also have the ability to use their email address to login to your member app 24/7 to update their billing info, add a family member, etc.
For info on helping patients without an email address, CLICK HERE!