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Every Patelco MasterCard is designed for convenience and security. To activate your new MasterCard, call 866.762.0558 and do the following:
If you need help with your Mastercard, or if your card is lost or stolen, call 800.358.8228. From outside the United States, call 1 909 941 1034.
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If you are using a screen reader and are having problems using this website, please call 800.358.8228 for assistance.