Several years. The path to being certified in pediatric hematology/oncology after completing college is: medical school (4 years), pediatric residency (3 years), pediatric hematology/oncology fellowship (3 years). Some do additional years as a research fellow if interested in doing independent research in the field as well. Good luck!
Heme/onc. 3 years, minimum, after pediatric residency. .
Different focus. Pediatric oncologogists diagnose, treat and care for children with cancer or malignancies. Some overlap with hematology because they are blood cancers. Pediatric hematologists deal with many blood problems, some which are cancers (leukemia), some which are minor (iron deficiency anemias), some which are life-threatening (aplastic anemia), some which are inherited (sickle cell, hemophilia). Read more...