New York Dentist. Dr. Joel Mark provides Cosmetic Dentist, Dental Implants, Veneers, Teeth Whitening, Root Canal, Toothache, General Dentist to the following locations: Midtown, 42nd Street, Grand Central. Midtown Dentist providing excellent dentistry including Cosmetic Dentist, Dental Implants, Veneers, Teeth Whitening, Root Canal, Toothache, General Dentist in New York, Midtown, 42nd Street, Grand Central, New York.