Yes, if you plan to sign them up via the illumitrac software.
A credit or debit card is required primarily because banks make authorization a bit tricky when using a checking account/routing number to process subscriptions. Because the overwhelming majority of checking account holders have debit cards associated with them and because illumitrac doesn’t want to have payment authorization be a complication for your office, a debit or credit card is required for all patients in your membership.