Robert Natt is now the chief executive officer of PayFlex Systems USA Inc.

Mark Huber, the founder, continues to be the chairman of the company, according to PayFlex, Omaha, Neb.

PayFlex runs flexible spending account plans, health reimbursement arrangement plans and other health account and benefit account programs.

Natt is a past president of Med-I-Bank Inc., Waltham, Mass., a health account card company that was sold to Metavante Corp., Milwaukee, in 2006. He also has run a health maintenance organization.

Natt has served on the PayFlex board in 2006.