[6][7][8] He is a professor of neurosurgery at the University of California, Los Angeles and emeritus editor-in-chief of Surgical Neurology International.

[10] He is a proponent of the conspiracy theory that the COVID-19 pandemic was an orchestrated attack by the Chinese government in his self-published book The China Virus: What is the Truth.

In 1964, he received a master's degree in physiology at the State University of New York at Buffalo, after which he pursued surgery and neurosurgery training in Chicago and Minnesota.

He then moved to the National Institutes of Health, receiving a PhD in pharmacology from the George Washington University School of Medicine in 1969.

[11] There, he expanded his work in microsurgery and cerebrovascular surgery, particularly aneurysms, arteriovenous malformations, and bypassing cerebral ischemia.

He travels frequently to developed and Third World countries to advise, lecture on neurosurgical trends and techniques, and teach ethics in humanitarian missions.