He is a member of the North American Spine Society, American Academy of Orthopedic Surgeons, American College of Spinal Surgery, and the American Board of Orthopedic Surgeons.

Dr. Harf is an acknowledged expert in the treatment of traumatic and degenerative spinal problems of cervical, thoracic and lumbar spines. He uses advanced spinal diagnostics as well as advanced technologies in the diagnosis and treatment of spinal conditions. He is skilled in minimally invasive surgical procedures of the spine as well as complex spinal reconstruction. He is also skilled at operative interventions for neck and back pain, including electro-thermal therapies, intervention pain management techniques including: spinal injections, facet injections, epidural steroid injections, and diagnostic diskograms.