Less than two years after essentially quadrupling in size and moving its corporate offices halfway across the country, Steward Health Care has hired a new general counsel.

Steward, which touts itself as the nation’s largest private, for-profit physician-led health care network, announced Monday that longtime Boston health care and employment law attorney Herb Holtz will lead the company’s legal department and serve on its leadership team. He succeeds Joe Maher, who is retiring as GC in January.