Dr. Costello graduated the medical school from the University College of Dublin National University SOM and did his residency at Albert Einstein College of Medicine. He is specialized in Pathology and board certified in Anatomic Pathology & Clinical Pathology. Dr. Costello has been in practice for more than 20 years and is affiliated with Sycamore Shoals Hospital. During his career, he has also contributed to 1 publication of medical interest.