SANDY SPRING BANCORP, Olney, Md., has appointed three new directors to its board and that of its principal subsidiary, Sandy Spring National Bank of Maryland. They are:
*Susan D. Goff, president of M.D. IPA Inc. and senior vice president of its parent company, Mid Atlantic Medical Services Inc., the largest health maintenance organization in the Middle Atlantic states.
*Solomon Graham, founder, president and chief executive officer of Quality Biological Inc., in Gaithersburg, Md.
*Lewis R. Schumann, a partner in the Rockville law firm of Miller, Miller, & Canby.