Hematology-Oncology Associates of CNY (HOA) has been a private practice dedicated to caring for people with blood disorders and cancer since 1982. ... Support Programs. Locations. Patient Portal. Our Locations. Brittonfield - East Syracuse, NY. 5008 Brittonfield Parkway East Syracuse, NY 13057. 315.472.7504. Onondaga Hill - Syracuse, NY ...Doctors‧Virtual Visits‧Your Team‧Contact‧Careers‧Brittonfield - East Syracuse, NY.