NextCare Holdings Inc., already the country’s largest privately held urgent care provider, grew even more last week with the acquisition of three urgent care facilities in its home state of Arizona. The newest additions are two Troyer Urgent Care centers in Flagstaff and Lake Havasu City, and Chino Valley Medical Center in Chino Valley. They bring the company’s total to 35 locations within the state, and extend its services to more than 90% of the state’s population. The Chino Valley center will also provide primary care services. Financial terms were not disclosed.