Medical Group Westchester NewYork-Presbyterian Medical Group Westchester 55 Palmer Avenue Call for an appointment Find a doctor Opens in Google Maps NYP Westchester (formerly Lawrence Hospital) Cancer Center 55 Palmer Avenue Bronxville, NY 10708 Opens in Google Maps Directions Contact For department phone numbers please see Contact Us. Specialties Hematology/Oncology Obstetrics & Gynecology Oncology Thoracic & Cardiac Surgery Our Doctors Oncology Michelle Boyar, MD Stephanie Smith-Marrone, MD Nancy Mills, MD Thoracic & Cardiac Surgery Roy Oommen, MD Our Facility Use the left and right arrow keys to navigate the gallery Contact Us Medical Group Westchester NYP Westchester (formerly Lawrence Hospital) Cancer Center 55 Palmer Avenue Bronxville, NY 10708 Opens in Google Maps 914-787-3157 Breast Surgery 914-787-3100 Hematology and Oncology 914-737-3346 Obstetrics and Gynecology 914-787-3100 Oncology