David W. Mantik,M.D., Ph.D.

David W. Mantik, M.D., Ph.D. is a physicist and board-certified radiation oncologist and an associate professor of radiation oncology at Loma Linda University Medical School in California. He received his doctorate in physics from the University of Wisconsin and his medical degree from the University of Michigan before completing his internship and residency in radiation oncology at LAC/USC Medical Center in Los Angeles. He has also completed fellowships in physics at the University of Illinois and in biophysics at Stanford University, and a junior faculty clinical fellowship with the American Cancer Society. Mantik has conducted pioneering work on the John F. Kennedy autopsy X-rays with densitometry, a type of investigation never before performed, and has conducted the most extensive studies of the Zapruder film ever undertaken. His important studies of the X-rays and of the alteration of the film appear in the books Assassination Science and Murder in Dealey Plaza.