Mark N. Jacobson, DDS General Dentistry & Periodontics 211 East 43rd Street, Suite 1304 New York, NY 10017 Email: mnjsmile@aol.com Phone: 212.697.3946 Fax: 212.687.4472 Office Hours: Monday 9:00 am - 5:00 pm Tuesday 9:00 am - 6:00 pm Wednesday 10:00 am - 4:00 pm, by appointment Thursday 8:00 am - 5:00 pm Friday: 7:30 am - 2:00 pm Sunday: Appointments are available for existing patients Special "after hour" appointments are available for existing patients Emergencies: We accommodate emergency patients who request appointments outside of normal office hours.