Wirtz, David D. Return to Directory Provider Name: Wirtz, David D. Primary Specialty: Emergency Medicine Group: Cortland Regional Medical Center County: Cortland Street: 134 Homer Ave. City: Cortland State: NY Zip: 13045 Phone: (845) 627-7217 Fax: (607) 756-3515 Gender: Male Medical School: New York Medical College Degree Date: 2000