Active-duty service members enrolled at Fairfax can call (571) 432-2700, Monday through Friday beginning at 6 a.m. to schedule same day military medicine appointments.Member Services / External Program ReferralOperations (EPRO) OfficePatients who need need assistance or information regarding healthcare benefits, TRICARE Online, Prime Travel, debt collections or the TRICARE Plus program should call (571) 231-4126.Services