Notable for his work as a neurologist at several Massachusetts, North Carolina, and Virginia hospitals, Alexander is perhaps best known as the author of Proof of Heaven: A Neurosurgeon's Journey into the Afterlife, a New York Times bestselling memoir describing his 2008 near-death experience while suffering from meningitis.
After graduating from the University of North Carolina at Chapel Hill, he received his medical degree from Duke University.
He published his second work -- The Map of Heaven: How Science, Religion, and Ordinary People Are Proving the Afterlife -- in late 2014.
Born in Charlotte, North Carolina, he returned to his home state after attending a private boarding school in New Hampshire during his high school years.
Alexander's memoir was harshly criticized by fellow writer and neurologist Oliver Sacks on the grounds that it treated the topic of near-death experiences in an unscientific manner.