Barbara Baldavin (born October 18, 1938) is an American television actress.She mainly performed in dramatic roles. In the 1960s she was a recurring character in Star Trek as Angela Martine. In the 1970s she was a regular cast member in Medical Center as Nurse Holmby.She went on to become a casting director and assistant for Trapper John, M.D. and Dynasty. She has recently taught in Dawn Wells' Film Actor's Boot Camp.