U.S. HealthWorks has acquired three medical centers in California.

The company picked up two Tustin Irvine Medical Group locations and East Edinger Industrial Urgent Care. All three centers are in the Orange County, California, area. The health care centers provide diagnosis, treatment, preventative services, pre-employment and post-offer exams and rehabilitative care.

The acquisitions give U.S. HealthWorks 73 Centers and worksites in California, and 222 centers and worksites in 19 states. Terms of the deals were not disclosed.

The company has been making acquisitions to expand the number of urgent care centers in its network. In June, the group bought California Occupational Clinic of Los Angeles, and IndustriCare, an urgent care center in North Carolina. 

Other groups have also been expanding their urgent care networks, as the Affordable Care Act brings more patients into the U.S. health care system. In October, Altamont Capital Partners made a majority investment in Legacy ER & Urgent Care, and before that, in September, American CareSource Holdings (Nasdaq: ANCI) picked up Express Family Care.

For more on industry consolidation, see ACA Reshuffles the Deck