Northeast Ga. Health System honors employee of year, 50-year veteran Payroll specialist Tammy Sullivan was named 2014 Employee of the Year by Northeast Georgia Health System.Sullivan joined NGHS in 1995. She has two adult children and two grandchildren. “As specialist in our payroll department, Tammy shares the enormous task of making sure every payday goes smoothly for our more than 5,000 employees,” said Carol Burrell, president and CEO of the health system.