Recently hired CFO James Hughey will leave Mammoth Hospital on July 31 to go to work at the San Mateo Medical Center. Hughey has worked at Mammoth Hospital just over three months. Mammoth Hospital Administrator Gary Boyd says Hughey told him that small town life had a "bigger impact on him than he thought it would." At a recent employees' meeting, Hughey had also spoken candidly about the chronic deficit at the 17-bed, critical-access hospital.