About 100 public and health care officials gathered Wednesday in Roanoke for the groundbreaking of a $10.7 million community health center. rnrnNew Horizons Healthcare (NHH) is building a 32,000-sqare-foot building at 3716 Melrose Ave. NW. The nonprofit provides primary medical services to patients in the Roanoke area, offering a range of health and medical services, without regard to patient income or insurance status. rnrnOver the past 10 years, New Horizons has seen an increase in patient visits, from 4,300 in 2001 to more than 13,000 in 2010. rnrn”The new building will increase the number of medical exam rooms for family practice and pediatrics