The aim of this trial will be to examine the short and long term effectiveness of dry needling on pain, disability, and patient perceived improvements in patients with neck pain attending physical therapy. The investigators hypothesize that patients who receive dry needling, manual therapy, and exercise will achieve greater reductions in pain and disability in the short (4 weeks) and long term (6 and 12 months) compared to those who receive sham dry needling, manual therapy, and exercise.