Daphne Simeon M.D. is an American psychiatrist, best known for her research on depersonalization disorder. Simeon is a graduate of Columbia University's medical school, psychiatry residency and fellowship program, and psychoanalytic institute. Simeon now works at Beth Israel Medical Center in New York, at the Family Center for Bipolar Disorder.
Simeon was until recently an associate professor of psychiatry at the Mount Sinai School of Medicine in New York City, where she did research, supervised, and taught. It is here that she ran some North American clinic that specifically treated depersonalization disorder. She currently co-chairs an international task force that will generate new recommendations for the DSM-V classification of dissociative disorders. She currently serves as an advisory board member for the National Organization of Drug-Induced Disorders.