HealthAlliance of the Hudson Valley, Ulster County’s largest employer with 1600 full-time and 600 part-time employees is preparing for downsizing. According to a press release issued last Friday afternoon, financial challenges are causing the health care organization to evaluate options to reduce expenses and improve efficiency, “including actively pursuing a single-campus alternative in Kingston.” According to HealthAlliance CEO David Lundquist, management has been seriously examining “different operational considerations” for about a year.