Matt Flavin has been named chief executive officer of Concord Energy Holdings LLC, a Denver-based energy services firm.

Flavin, who will report to Concord’s board, previously served as president. Prior to joining Concord, he was senior vice-president for Energy Corp. of America.

Concord provides service for natural gas, natural gas producer services, commercial and industrial sales, crude oil marketing, transportation, water services, and oil field services.