Optum’s Massachusetts-based subsidiary Atrius Health plans to acquire Acton Medical Associates, a 45-provider primary care group serving nearly 37,000 patients in the Boston area, according to a Sept. 25 filing from the Massachusetts Health Policy Commission.
Atrius, a Newton-based physician group purchased by Optum in 2022, serves more than 749,000 patients across 28 clinical locations.
The proposed acquisition remains subject to approval by state regulators.
UnitedHealth Group employs or has contractual ties with more than 90,000 physicians, or about 10% of the U.S. physician workforce. Its provider subsidiaries span many industries and specialties, and include home care companies, ASCs, and administrative entities — most of the acquisitions are not publicized.
The company recently completed its acquisition of home health and hospice provider Amedisys in August.
