Lake Norman Medical Group, Primary Care Byers Creek Welcomes Dr. Elizabeth Clay and Elizabeth Hayes, DNP, FNP-BC 7/23/2020. MOORESVILLE, N.C. - Lake Norman Medical Group, Family Medicine Byers Creek, in Mooresville, welcomes Elizabeth Clay, D.O., family medicine physician, and Elizabeth Hayes, DNP, FNP-BC. Dr. Clay and Family Nurse Practitioner Hayes are now seeing patients in the Byers ....