Marjorie Greenfield is a board-certified obstetrician-gynecologist and fellow of the American College of Obstetrics and Gynecology. She has practiced and taught OB/GYN since 1987, currently as Associate Professor at Case Western Reserve University School of Medicine/University Hospitals of Cleveland. She has been recognized for clinical excellence by local and national organizations, including AOL Digital City, Best Doctors in America, and The Center for the Study of Services, Northern Ohio Live Magazine, and Cleveland Magazine.

In 2000, Dr. Greenfield was hired as Director of Obstetrics and Gynecology for the Dr. Spock Company, a health and parenting multimedia enterprise, as well as now being on the Professional Advisory Panel for Babyzone.com (a subsidiary of disney.com). She has written hundreds of articles for the Web, answered scores of “Ask Our Experts” questions, and directed obstetrical content for the magazine-style public television series Parentsense. In 2002, the Dr. Spock Company was proud to be one of only five Internet health sites nominated for the Webby Award, the Oscars of cyberspace.