John Avanzato grew up in the Bronx. After receiving a bachelor’s degree in biology from Fordham University, he went on to earn his medical degree at the State University of New York at Buffalo, School of Medicine. He is currently a board certified gastroenterologist in Geneva, New York, where he lives with his wife of twenty-eight years.
Inspired by authors like Tom Clancy, John Grisham, and Lee Child, John writes about strong but flawed heroes. His first four novels, Hostile Hospital, Prescription for Disaster, Temperature Rising and Claim Denied have been well received. The Gas Man Cometh is the fifth novel in the Cesari series.