John Hamjian, M.D. Share: Health Services John Hamjian, M.D. Visit Website 2 Lynxholm Court Hyannis, MA 02601 (508) 778-8585 (508) 775-2951 (fax) About Map About Board Certified in Neurology and Clinical Electrophysiology. Specializes in neuromuscular disease and movement disorders. Treats Parkinson's, dementing illnesses, neuropathies and other neurologic con What's Nearby? Distance: 5 10 15 20 25 50 mi.