Contact Us

We are happy to assist you. If you have a general question regarding your Mayo Employees Federal Credit Union credit card account, please review our Frequently Asked Questions. Otherwise, contact us by phone, email, or mail.
  • PHONE
    • 24 Hour Member Service
      • 800-234-5354
    • 24 Hour International Toll Free/Collect Service
      • (410) 581-9994
    • MEFCU Member Service
      • 800-535-2129 or 507-535-1460
  • EMAIL
    • If you have a general question or comment you may email us at mefcu@mayo.edu
  • THIS EMAIL ADDRESS IS NOT SECURE; PLEASE DO NOT INCLUDE YOUR ACCOUNT INFORMATION. If you have an account specific question, please call using the number above.
  • MAILING
    • Member Service
      Mayo Employees Federal Credit Union
      Card Services Department
      130 23 rd Avenue SW
      Rochester, MN 55902
    • Payment address
      Mayo Employees Federal Credit Union - Visa
      PO Box 14441
      Des Moines, IA 50306
  • DISPUTE A TRANSACTION:
    • If you do not recognize a charge or feel you were billed an incorrect amount, please follow these three steps. First, double-check your receipts and check with other authorized users of your card. Second, contact the merchant where the purchase originated. Finally, if you are unable to resolve your dispute with the merchant, complete the Visa Card Dispute Form and mail or fax to:

    • Mail:
    • Card Services
      Attn: Dispute Department
      PO Box 10409
      Des Moines, IA 50306

    • Phone:
      • (800) 234-5354
    • Fax:
      • (515) 457-2074
  • IF YOU SUSPECT FRAUD:

    • Mail:
      Card Services
      Attn: Fraud Department
      PO Box 10409
      Des Moines, IA 50306

    • Fax:
      • (515) 457-2074