Systems, methods, and devices for payment product verification and authorization using a customer identifier are disclosed. In some aspects, techniques described herein relate to receiving, by a payment product provider and from a payment processor, a customer identifier; querying a datastore of customers of the payment product provider with a parameterized query, where the customer identifier is a parameter of the query; determining, based on the query, that the customer identifier is associated with customer profile data of the payment product provider; determining payment product data associated with the customer profile data; returning, by the payment product provider and to the payment processor, a positive eligibility indication based on the customer profile data and the payment product data; receiving, by the payment product provider and from the payment processor, a customer approval indication; and sending, by the payment product provider and to the payment processor, the payment product data.