You may send your request by fax to (423) 495-4740. CHI Memorial Medical Records office hours are Monday - Friday, 8:00 a.m. - 4:30 p.m. at CHI Memorial Hospital Chattanooga. Records are usually available within 7 to 10 business days from the time the request is made. If you have any questions, you may call us at (423) 495-8285..