Carolina Endocrine, P.A. 3840 Ed Drive, Suite 111 Raleigh, NC 27612. Phone: (919) 571-3661 Fax: (919) 571-3290. Phone Options: Press 3 - For New Patient Appointments/Referral Coordinator Press 4 - For Existing Patient Appointments/Front Desk Press 5 - For Clinical Questions, Medical Issues, Test Results, Prescription Refills/Clinic Staff.