The company said Tuesday that its chairman,...

The company said Tuesday that its chairman, Timothy M. Aitken, has replaced Victor Chaltiel as president and chief executive. Chaltiel remains on the board of directors, but the Costa Mesa company said that his role with Abbey is under discussion.

Chaltiel became chief executive of Abbey in November when the company bought Torrance-based Total Pharmaceutical Care, where he serves as chief executive.

Richard Rapp, Abbey’s chief financial officer, would not disclose details of the change, saying only that “there will be clarification in the near future.”

Abbey makes home health-care equipment and drugs. Total Pharmaceutical, a wholly owned subsidiary, provides drugs and medical equipment for patients getting home infusion therapy.

In Tuesday’s Nasdaq trading, Abbey’s stock closed at $28.88, up 38 cents.