He earned his medical degree from the Medical School of the National and Kapodistrian University in Athens, Greece. Following two years of service in the Greek Army, Dr. Papanikolaou completed his residency in Internal Medicine at the 401 General Army Hospital of Athens. He completed a four-year fellowship in Hematology at “Metaxa” Specialized Anticancer Hospital of Peiraeus in 2009. Dr. Papanikolaou has several publications and poster presentations.