(AP photo/Jason DeCrow)

LOUISVILLE, Ky. (AP) — Michael McCallister, chairman of Humana Inc. (NYSE:HUM), will retire from the health insurer’s board of directors a year after he stepped down as chief executive officer.

The Louisville, Ky., company said Monday that McCallister will retire from the board Dec. 31 and be replaced by Kurt Hilzinger, a lead director who has served on the board for nearly 10 years.

Humana is one of the nation’s largest health insurers and the second-biggest provider of Medicare Advantage plans, which are privately run versions of the government’s Medicare program for the elderly and disabled.

Hilzinger was elected to Humana’s board in July 2003 and became lead director in August 2010. He also has served as a director and executive with the prescription drug distributor AmerisourceBergen Corp.

Bruce Broussard replaced McCallister as Humana CEO on Jan. 1. McCallister had joined Humana in 1974 as a finance specialist after graduating from college. He was named CEO in 2000 and then added the title of chairman in 2010.

Humana shares closed at $99.91 on Friday, which put the stock up more than 45 percent so far this year.

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