Staff nurse Princeton Hospital, 1968—1970. Leadership and staff nurse Mount Sinai Medical Center, New York City, 1970—1976. Health care analyst Long Island College Hospital, Brooklyn, 1976—1977.
Executive assistant North America Railco, Incorporated, New York York City, 1977—1978. Health records analyst Beth Israel Medical Center, 1978—1979. Project coordinator, health facilities consultant Duffy, Inc., Planners and Designers, 1979—1981.
Project director, health facilities consultant Henry Meltzer Group, Inc., 1981—1982. Founder, president Margaret Richter Associates Inc., since 1982.