UnitedHealth Group has appointed both Christopher J. Walsh and Mitchell Zamoff to the position of executive vice president and general counsel, effective immediately. Zamoff and Walsh have shared the duties on an interim basis for UnitedHealth Group since January 2009. Zamoff will take lead responsibility for regulatory and governmental matters, compliance and litigation. Walsh will be responsible primarily for SEC compliance, mergers and acquisitions, corporate governance, employment and capital markets. They will co-chair the company's legal department.