Rural Health Group at Lake Gaston 108 North Mosby Avenue PO Box 250 Littleton, NC 27850 Fax (Medical Records & Clinical): 252-586-2028 Fax (Non-Clinical / Business): 252-586-2793. Phone: 252-586-5411. General Office Hours: Monday - Friday, 7:30 a.m. - 5:00 p.m..