About us. Allegiance Medical, Inc. is an examination services clinic providing disability assessments of uniformed service members and veterans for the US Department of Veterans Affairs and its primary contractors as well as other employment related examinations for various clients. Echocardiographer. Seeking part-time Echocardiography US Technicians to perform as needed 2D echocardiograms 1-2 days per month at our Oconomowoc clinic, assist as ne...