Medical Group Westchester NewYork-Presbyterian Medical Group Westchester 55 Palmer Avenue Call for an appointment Find a doctor Opens in Google Maps NYP Westchester Cancer Center 55 Palmer Avenue Bronxville, NY 10708 Opens in Google Maps Directions Contact For department phone numbers please see Contact Us. SpecialtiesHematology/OncologyOncologyThoracic & Cardiac Surgery Our Doctors Oncology Michelle Boyar, MDMatthew Kearney, MDStephanie Smith-Marrone, MDNancy Mills, MD Thoracic & Cardiac Surgery Roy Oommen, MD Our Facility Use the left and right arrow keys to navigate the gallery 1 OF 4 Contact Us Medical Group Westchester NYP Westchester Cancer Center 55 Palmer Avenue Bronxville, NY 10708 Opens in Google Maps 914-787-3157 Breast Surgery 914-787-3100 Hematology and Oncology 914-787-3100 Oncology