[1] Joshua is the son of a New York City police officer, and later, a public school mathematics teacher, and a United Cerebral Palsy shelter workshop supervisor.
[2] He completed training in internal medicine at University of California, Los Angeles before completing training in anesthesiology at Massachusetts General Hospital (MGH) at Harvard Medical School and Stanford University School of Medicine.
[10] He is also the Editor and Chair of the Pain and End-of-Life CME program from the California Society of Anesthesiologists.
[12] Prager is a recognized expert who speaks nationally and internationally in the administration of Ketamine for depression, CRPS and other pain problems.
[13] In 2016, he was involved in writing guidelines for Ketamine treatment under the aegis of the Reflex Sympathetic Dystrophy Syndrome Association (RSDSA).
He also provided volunteer anesthesia for children in the developing world who need corrective surgeries for congenital anomalies.