DeLong, Douglas M. Return to Directory Provider Name: DeLong, Douglas M. Primary Specialty: Geriatric Medicine Group: Bassett Healthcare County: Otsego Street: 1 Atwell Road City: Cooperstown State: NY Zip: 13326 Phone: (607) 547-3456 Fax: (607) 547-3259 Board Certified: 1 Gender: Male Medical School: University North Carolina School of Medicine Degree Date: 1979