RALEIGH, N.C. (AP) — Medical software company Allscripts Healthcare Solutions Inc. plans to hire another 350 workers in North Carolina’s Research Triangle region over the next 4 ½ years to expand its research and development work, chief executive Paul Black said Wednesday.

The Chicago-based company said it would add to its more than 1,000 employees in Raleigh, one of Allscripts’ top three locations along with its headquarters and Atlanta. Allscripts develops and sells software for doctors and hospitals that handle electronic medical records, digital patient prescriptions and medical practice management.