John B. McCoy is an American businessman. He served as Chairman from November 1999 and Chief Executive Officer from October 1998 of Bank One Corporation

Bank One Corporation

Some of the banks that were merged into these banks include:*Bank One**Security National Bank & Trust **Affiliated Bankshares of Colorado **American Fletcher Corp. **City National Bank and Trust Co...

 until his retirement in December 1999, and Chairman and Chief Executive Officer of its predecessor, Banc One Corporation, from 1987 to 1998. McCoy has been a Director of AT&T Inc. since October 1999. He served as a Director of Ameritech Corporation from 1991 until the company was acquired by AT&T Inc. in 1999. He was also a Director of Cardinal Health

Cardinal Health

Cardinal Health, Inc., is a Fortune 500 health care services company based in Dublin, Ohio. Cardinal Health specializes in health care supply chain services, providing pharmaceuticals and medical products to more than 40,000 locations each day. The company is also a manufacturer of medical and...

, Inc.; ChoicePoint

ChoicePoint

ChoicePoint was a data aggregation company based in Alpharetta, near Atlanta, Georgia, United States, that acted as a private intelligence service to government and industry...

 Inc.; and Federal Home Loan Mortgage Corporation

Federal Home Loan Mortgage Corporation

The Federal Home Loan Mortgage Corporation , known as Freddie Mac , is a public government sponsored enterprise , headquartered in the Tyson's Corner CDP in unincorporated Fairfax County, Virginia....

.