Leon, MD, John A. Return to Directory (County) , Primary Specialty: (Otsego), Ophthalmology Group: Bassett Healthcare Street: 1 Atwell Road City: Cooperstown State: NY Zip: 13326 Phone: (607) 547-3960 Fax: (607) 547-6574 Board Certified: Yes Gender: Male Medical School: Univ of Southern California; Keck School of Medicine Degree Date: 1984