About Piedmont Rheumatology Pa. Piedmont Rheumatology Pa is a group practice with 1 location. Currently, Piedmont Rheumatology Pa specializes in Internal Medicine and Rheumatology with 3 physicians. Piedmont Rheumatology Pa Office Locations. Piedmont Rheumatology Pa. 225 18th St SE Hickory, NC 28602 (828) 322-1996..