Appointments | Patient Portal; Quick Links For Patients. For Patients. Patients & Visitors; Accepted Insurance; All Appointments; Billing Information; Helpful Information; ... Siloam Springs Internal Medicine 3721 E. Hwy 412 | Suite A Siloam Springs, AR 72761 Phone: (479) 215-3070 Fax: (479) 215-1184 Directions..