Nicholas Ahn, M.D. Titles and Appointments Professor Schools Medical School Departments Orthopaedic Surgery | Neurological Surgery You have reached the Academic Profile. For more information on the doctor and patient care, please visit the clinical profile. Education Medical Education Harvard Medical School (1996) Residency The Johns Hopkins Hospital (2001), Orthopaedic Surgery Fellowship Rush University Medical Center (2002), Orthopaedic Spine Surgery