Krieg was involved in a work-related car accident. He hired the Warshafsky law firm to represent him in his personal injury claim. Riegleman provided chiropractic treatment to Krieg for approximately three years after the accident. His bill exceeded $19,000. Krieg and the law firm signed a doctor’s lien document authorizing the law firm to pay Riegleman from monies recovered from the lawsuit. Krieg’s suit was settled in mediation. Krieg and the law firm were advised by another doctor that Riegleman’s charges were excessive. They then withheld $5,640 from Riegleman. When Riegleman sued, Krieg said that he had delegated his duty to pay him to the law firm. Is he correct? Why?