Founded in 1987, OMSNIC stands for OMS National Insurance Company, Risk Retention Group. OMSNIC is the leading provider of pr ... ofessional liability insurance to oral and maxillofacial surgeons (OMS), insuring more than 80 percent of eligible OMS surgeons nationwide. OMSNIC’s financial strength is rated A (Excellent) by A.M. Best, and provides an array of training and education resources for oral and maxillofacial surgeons and their staff. Follow us on Twitter for more updates. read more