Then and Now by Lynne Marshall

Paul Valverde is stretched to the limit, caring for an elderly relative while running a business and maintaining a full-time medical practice at Mercy, Inc. Hospital–with no time for a relationship.
RN Carrington Hanover leaves her money-hungry fiance at the altar and moves on to a new job at Mercy, Inc. in Los Angeles. The next man in her life must love her, not her money.
All work and no play has made Paul an unfulfilled man, and the resurrected redheaded crush from his youth is driving him to distraction. Can their complicated past become untangled by their newfound attraction–or will their love be doomed by mistrust and long-held resentment?