3125 Springbank Lane, Suite E, Charlotte, NC 28226 DIRECTIONS. Dr. Charles A. Withers II is a renowned Rheumatologist with 12 years of experience in the field of medicine. He has completed his medical degree at Duke University. He currently practices at Integrative Rheumatology, Charlotte. He is expertise in Fibromyalgia, Ankylosing Spondylitis ....