The full 16-digit account number is located on the front of your My Best Buy® Credit Card, typically between the chip and your name.

Since Citibank issues these cards, you can log in to the Citi Retail Services portal to view your account details and statements.

Your Membership ID is used to track rewards, view order history, and manage subscriptions like My Best Buy Total™.

If you have a My Best Buy® Credit Card, your rewards Member ID is often printed on the back of the physical card.

You can call Citibank customer service at 1-888-574-1301. You will need to verify your identity with personal information (such as your SSN and date of birth) before they can share account details. 3. In-Store Lookup (No Card Required)

To look up your (or Member ID), the quickest methods involve checking your physical card, the official Best Buy website , or the mobile app. It is important to distinguish between your My Best Buy Membership ID (for rewards) and your My Best Buy® Credit Card number, as they are used for different purposes. 1. Find Your My Best Buy Membership ID