Dr. Feinberg received her undergraduate degree from the University of Chicago and her medical degree from Rush Medical College in Chicago. She completed her residency at Rush-Presbyterian-St. Luke's Medical Center in Chicago, before heading west for a fellowship in Infectious Diseases at the University of California. She is a board-certified specialist in Infectious Diseases and Internal Medicine.
In addition, Dr. Feinberg has chaired the Coordinating Committee on Therapeutics at the Office of AIDS Research of the National Institutes of Health. She is an active member of the International AIDS Society USA Advanced Disease Advisory Board and has been a member of many AIDS task forces and clinical trial groups. She is also involved with numerous professional organizations, including the American College of Physicians, the International AIDS Society, and the International Society for Antiviral Research.
Dr. Feinberg writes extensively about the treatment and prophylaxis of opportunistic infections in major medical journals as well as in recent books on AIDS. She is currently associate editor of AIDS Clinical Care and section editor of Infectious Diseases in Clinical Practice.