Sarah Ann Cahn of Piedmont, daughter of Frances and Robert Cahn of Walnut Creek, and Michael Jay Handelsman of Piedmont, son of Carol and Barry Handelsman of Lake Worth, Fla., have announced their engagement.

The bride-to-be received her bachelor’s degree from Harvard University and is a pediatrician. She is the sister of Deborah Cahn-Weiner (and Dan Weiner) of Providence, R.I. Grandparents are Beatrice Cahn of Menlo Park and the late Alan Cahn; and Pearl Miller of Rossmoor and the late Henry Miller.

Her fiancé received a bachelor’s degree in public policy studies from Duke University and works in marketing and business development. Grandparents are Rose Bauman of Margate, Fla., and the late Milton Bauman; and Herman Handelsman of Sunrise, Fla., and the late Jean Handelsman.