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    Our Services

    Need Help ?

    Please feel free to contact us.

    302 W Upham St.

    PO Box 279

    Marshfield, WI 54449

    715-387-8686

    800-818-5049
    mmccu@mmccu.com

    DO NOT INCLUDE ANY SENSITIVE PERSONAL INFORMATION IN EMAIL

    For lost or stolen debit cards

    800-543-5073

    For questions on your VISA® credit cards

    Customer Service

    800-662-7747

    Fraud Department

    800-558-3424